236 results on '"CRUSTACE"'
Search Results
2. Distribution model of shrimp species in Lake Nokoué, southern Benin, West Africa.
- Author
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Sintondji, S. Wilfried, Sohou, Zacharie, Goussanou, Appolinaire, Godome, Théophile, Baetens, Katrijn, Lacroix, Geneviève, and Fiogbé, Emile D.
- Subjects
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PENAEUS monodon , *LIFE cycles (Biology) , *MACROBRACHIUM , *SHRIMP fisheries , *LAKES , *SHRIMPS - Abstract
The aim of this work was to evaluate the spatial and temporal distribution of shrimp species in the Lake Nokoué-Cotonou Channel complex for an efficient management of the fishery. The results of one year sampling from five stations (North, South, East, Central and West) in the complex revealed the following proportions: Penaeus notialis 73.68%, Macrobrachium macrobrachion 13.81%, Macrobrachium vollenhovenii 5.36%, Penaeus monodon 2.68%, Macrobrachium felicinum 2.20%, Penaeus kerathurus 1.72%, Macrobrachium cf. zariquieyi 0.27%, and Macrobrachium equidens 0.27%. The species M. cf. zariquieyi and M. equidens were never reported from Benin, but are now found in Lake Nokoué. Spatially, Penaeus (Penaeus notialis) are more abundant in the west (Acadja concentration zone), while Macrobrachium (Macrobrachium macrobrachion) are more dominant in the east (near the Ouémé entrance) and north (near the Sô entrance) of the lake. Penaeus are strongly present in the lagoon complex from January to August, while Macrobrachium are more abundant in Lake Nokoué from September to December. Spearman's correlation analysis revealed that increasing salinity, pH, transparency and total dissolved solids (TDS) positively influenced the abundance of P. notialis , while increasing salinity, pH, transparency, and TDS negatively influenced the abundance of M. macrobrachion at the 5% significance level. For an efficient management of the shrimp fishery, it is desirable that the shrimp fishery in Lake Nokoué, mainly in the Cotonou Channel, which is a very sensitive area for their seasonal migrations, benefits from at least three months of respite per year, from November to January. This period corresponds to the strong migration of juvenile Penaeus towards the lake. This should allow many Penaeus to grow up and breed at least once in their lives, according to the species' life cycle presented. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
3. Proteases from Penaeus monodon Fabricius, 1798 (Decapoda, Penaeidae): partial characterization and localization.
- Author
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Nguyen, Hong-Loan T., Quach, Hong-Thai, Trinh, Dinh-Quynh, Nguyen, Huong-Quynh, Pham, Bao-Yen, Dinh, Thai-Nho, Ngo, Thi-Trang, and Phan, Tuan-Nghia
- Subjects
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PENAEUS monodon , *PENAEIDAE , *DECAPODA , *PROTEOLYTIC enzymes , *SODIUM dodecyl sulfate , *MOLECULAR weights , *POLYACRYLAMIDE gel electrophoresis , *CASEINS - Abstract
This study aimed to characterize and determine the distribution of proteases in various anatomical parts of Penaeus monodon using mainly electrophoresis on sodium dodecyl sulfate (SDS) polyacrylamide gels impregnated with casein (casein-SDS-PAGE) and specific protease inhibitors. Twelve caseinolytic bands designated A-L, with estimated molecular masses of 11.4-49.6 kDa were detected by SDS-PAGE, and were most abundant in the hepatopancreas. Among the 12 bands, E, J, K and L were predominant, A, G and H were identified as chymotrypsin-like proteases, D, E, I, J, K and L were identified as trypsin-like proteases, and B, C and F were identified as serine proteases. The proteases were most active at 50°C and pH 7.0. The proteolytic and trypsin-like activities of Penaeus monodon were most abundant in hepatopancreas extracts and least abundant in extracts from the haemolymph. Trypsin-like proteases in the hepatopancreas extract were found to activate prophenoloxidase (proPO) to form phenoloxidase (PO). Résumé: Cette étude vise à caractériser et à déterminer la distribution des protéases dans diverses parties anatomiques de Penaeus monodon , en utilisant principalement la technique de l'électrophorèse en gel de polyacrylamide contenant du dodécylsulfate de sodium (SDS) imprégné de caséine (casein SDS-PAGE) et des inhibiteurs spécifiques de protéase. La technique de l'électrophorèse SDS-PAGE révèle l'existence de douze bandes d'activité caséinolytique, désignées A-L et de poids moléculaire variant de 11,4 à 49,6 KDa. Ces bandes sont les plus abondantes dans l'hépatopancréas. Sur les douze bandes révélées, quatre ont été trouvées prédominantes à savoir E, J, K et L. Les bandes A, G et H ont été identifiées comme des protéases de type chymotrypsine, les bandes D, E, I, J, K et L comme des protéases de type trypsine et les bandes B, C et F des comme des protéases à sérine. La meilleure activité protéasique a été observée à 50°C et à pH 7,0. Les activités protéolytiques et celles de type trypsine de Penaeus monodon ont été trouvées plus abondantes dans l'hépatopancréas et moins abondantes dans l'hémolymphe. La formation de la phénoloxydase (PO), dans l'hépatopancréas, est due à l'activation de la prophénoloxydase (proPO) par des protéases de type trypsine. [ABSTRACT FROM AUTHOR]
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- 2022
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4. Estudio de isópodos terrestres (Crustacea: Isopoda: Oniscidea) en tres localidades de Boyacá, Colombia
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Ariel Fernando Preciado and Jhon Wilson Martínez
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Crustace ,oniscidea ,Boyacá ,composición ,abundancia ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Se analizó la composición y abundancia de isopodos terrestres, mediante colecta directa, en tres localidades del departamento de Boyacá, Colombia; Tinjacá, Tibasosa y Tota. Se identificaron cinco especies distribuidas en dos familias para un total de 2516 individuos colec tados, de los cuales se registraron por la primera vez en Boyacá las espeicies; Porcellio dilatatus (Brandt), Porcellionides pruinosus (Brandt), Armadillidium vulgare (Latreille) y Armadillidium nasatum (Budde-Lund). Se hallaron diferencias estadísticamente significativas respecto a: número de individuos, localidad y especies presentes. La mayor abundancia y riqueza se encontró en el municipio de Tibasosa. El mircrohábitat con mayor predominancia de los isópodos muestreadosfue el denominado plateo o suelo circundante a las plantas. La especie más abundante fue P. scaber y la especie más común fue A. vulgare. Las variables ambientales evaluadas no se relacionaron con el número de individuos colectados
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- 2014
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5. First Jurassic occurence of Enoploclytia M’Coy, 1849 (Crustacea: Decapoda: Erymidae).
- Author
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Devillez, Julien, Charbonnier, Sylvain, and Pezy, Jean-Philippe
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CRUSTACEA , *DECAPODA , *GEOLOGICAL basins , *FOSSILS , *OXFORDIAN Stage - Abstract
Among the Erymidae Van Straelen, 1925, known as early as the Late Permian (Changhsingian) and widespread in the Jurassic, the genus Enoploclytia M’Coy, 1849 seems to have a late appearance because of its lack before the Cretaceous. Until now, the oldest representative was E. augustobonae Devillez, Charbonnier, Hyžný and Leroy, 2016 from the Early Cretaceous (Barremian) of the eastern Paris basin (France). However, a new fossil collected in Normandy (France), showing the typical carapace groove pattern of Enoploclytia , attests the presence of the genus in the Late Jurassic (Oxfordian). [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
6. WHOLE-MOUNT IN SITU HYBRIDIZATION: MINIMIZING THE FOLDING PROBLEM OF THIN-SHEET TISSUE-LIKE CRAYFISH HAEMATOPOIETIC TISSUE.
- Author
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Zečić, Aleksandra and Noonin, Chadanat
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HEMATOPOIETIC stem cells , *PEDICLE flaps (Surgery) , *NUCLEIC acids , *CYTOLOGY , *TRANSPLANTATION of organs, tissues, etc. - Abstract
Crayfish haematopoietic tissue (HPT) has a thin-sheet-like structure with a thickness of 100-160 µm and a width of approximately 1-2 cm. This structure makes HPT extremely easy to fold after removal from the animal. Therefore, it is difficult to handle the tissue without folding when processing for sectioning and histological study. The degree of tissue folding reflects the size of the tissue sections obtained, how complicated it is to interpret the location of each tissue section, and the accuracy of the interpretation of the location of a specific transcript. To facilitate the interpretation of a specific transcript location in the HPT, we optimized a whole-mount in situ hybridization technique to minimize tissue folding. This optimized protocol effectively reduced the tissue folding. Therefore, the location of a specific transcript in the HPT was easily and accurately defined. This protocol will be useful for whole-mount staining of other tissues with similar structure. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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7. Elevated water temperature impairs gamete production in male narrow-clawed crayfish Pontastacus leptodactylus (Eschscholtz, 1823).
- Author
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Farhadi, Ardavan and Harlıoglu, Muzaffer Mustafa
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CRAYFISH ,WATER temperature ,FRESHWATER fishes ,FISH reproduction ,GLOBAL warming - Abstract
Copyright of Knowledge & Management of Aquatic Ecosystems is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
8. Resistance to dehydration and positive hygrotaxis in the invasive red swamp crayfish Procambarus clarkii.
- Author
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Piersanti, Silvana, Pallottini, Matteo, Salerno, Gianandrea, Goretti, Enzo, Elia, Antonia Concetta, Dörr, Ambrosius Josef Martin, and Rebora, Manuela
- Subjects
PROCAMBARUS clarkii ,INTRODUCED species ,DEHYDRATION ,SPECIES distribution ,BIOLOGICAL invasions - Abstract
Copyright of Knowledge & Management of Aquatic Ecosystems is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
9. Etude du risque d’effet des espèces halieutiques à l’éolien flottant dans le Golfe du Lion: rapport technique et méthodologique
- Author
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De Rock, Pauline, Hattab, Tarek, Vaz, Sandrine, De Rock, Pauline, Hattab, Tarek, and Vaz, Sandrine
- Abstract
Dans le cadre du sixième appel d'offres (AO6) pour l'éolien en mer en France, Ifremer réalise l’étude pour identifier les zones de moindre contrainte pour les espèces halieutiques (poissons, mollusques, crustacés, invertébrés benthiques sensibles) dans le Golfe du Lion à la demande de la Direction Générale de l'Energie et du Climat (Ministère de la Transition Ecologique et Solidaire). La méthodologie pour calculer le risque d’effet a été adaptée à partir de la méthode proposée pour l’étude des compartiments granulats et avifaune au sud de la Bretagne afin de maintenir une similitude de concepts et de terminologies entre les différents appels d’offres. Les données des campagnes scientifiques MEDITS et PELMED ont été utilisées dans un premier temps pour créer des cartes de distribution (densité ou biomasse). Les cartes de distribution ont ensuite permis de calculer la représentativité de chaque espèce. Les données de débarquements géolocalisés de pêche ont également été utilisées pour calculer la représentativité des espèces. A partir de ces représentativités, de la vulnérabilité (statut de protection ou état du stock) et de la distribution des espèces, des cartes d’enjeu ont pu être créées. L’enjeu couplé à la sensibilité (effets biologiques potentiels de l’éolien flottant) des espèces a servi à calculer le risque d’effet. Le risque d’effet global (toutes espèces confondues) est très fort dans la partie ouest du Golfe du Lion : dans la macrozone A, en face de Port-la-Nouvelle, dans l’extrémité ouest de la macrozone B ; et dans la partie nord de la macrozone C. Le risque d’effet est faible au sud des macrozones et au large du Golfe du Lion. L’incertitude associée au risque d’effet a été évalué avec une technique de ré-échantillonnage appelée bootstrapping.
- Published
- 2021
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10. Perceptions de communautés québécoises à l’égard des ressources comestibles du fleuve Saint-Laurent
- Author
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Brousseau, Julie and Marquis, Marie
- Subjects
fish ,participatory ,Maliseet Viger ,participative ,fleuve Saint-Laurent ,recherche qualitative ,communauté ,Malécites de Viger ,Gaspésie ,poisson ,crustacé ,Magdalen Islands ,community ,Îles de la Madeleine ,seafood ,stakeholder ,Saint-Lawrence ,qualitative research ,acteur - Abstract
Contexte: Le Saint-Laurent abrite une grande diversité de ressources comestibles, mais elles sont largement méconnues. De nos jours, les Québécois consomment principalement des produits marins importés, alors que les quelques espèces pêchées commercialement au Québec sont majoritairement exportées. Pourtant, il est raisonnable de penser que les habitants des communautés longeant le Saint-Laurent ont une relation de proximité aux ressources comestibles du fleuve et une vision de leur valorisation qui mérite d’être entendues. Manger notre Saint-Laurent est un projet de recherche-action multidisciplinaire visant la valorisation des ressources comestibles issues du Saint-Laurent. Objectifs: (1) Analyse critique de la démarche participative utilisée au sein de quatre communautés québécoises dans le cadre du projet Manger notre Saint-Laurent et (2) Analyse des résultats générés. Méthodologie: Quatre communautés ont été identifiées comme acteurs du projet : Cap-Chat, Sainte-Thérèse-de-Gaspé, les Îles de la Madeleine et la Première Nation Wolastoqiyik Wahsipekuk (Malécites de Viger). Un groupe de 10 à 14 participants a été recruté pour chaque communauté. La technique du groupe nominal (TGN) a été utilisée, et une analyse qualitative des transcriptions a été effectuée. Résultats: Les stratégies gagnantes portant sur l’augmentation de l’offre sont l’augmentation de la disponibilité locale sous forme de circuits courts et la promotion de la pêche de subsistance. Les stratégies gagnantes portant sur l’augmentation de la demande sont la découverte par la dégustation, la valorisation de la culture historique des pêches et le marketing éducatif des produits. Certaines espèces émergentes (oursin, algues, phoque) intéressaient particulièrement les participants. Les publics à cibler les plus populaires étaient les jeunes, ainsi que la communauté dans son ensemble. L’analyse qualitative a permis de révéler entre autres la forte identité culturelle de chaque région en lien avec la pêche. De plus, une analyse critique de la TGN révèle entre autres l’importance du recrutement des participants, de l’expérience du facilitateur et la pertinence d’une analyse qualitative pour approfondir les propos. Conclusion: L’échantillon de la population côtière du Saint-Laurent fait consensus que plusieurs ressources comestibles issues du Saint-Laurent gagnent à être plus disponibles et mieux valorisées, et que la communauté entière et particulièrement les jeunes sont à cibler. Cette étude est le premier pas d’un projet de recherche qui permettra qu’en tant que Québécois, nous pourrons Manger notre Saint-Laurent., Context: The Saint-Lawrence hosts a great variety of edible resources, but they are largely unknown. Quebeckers currently consume mostly imported seafood products whereas the few marine species that are commercially fished in Quebec are mainly exported. However, it is reasonable to assume that habitants along the Saint-Lawrence River have a closer relationship with edible marine resources and a vision for promoting them which deserves to be heard. Manger notre Saint-Laurent (Sustenance from our Saint-Lawrence) is a research-action multidisciplinary project aiming the promotion of edible local marine resources in the Saint-Lawrence. Objectives: (1) Critical analysis of the participatory process used in four communities in Quebec for Manger notre Saint-Laurent, and (2) Analysis of results generated. Methods: Four partner communities have been identified as actors in this project: Cap-Chat, Sainte-Thérèse-de-Gaspé, the Magdalen Islands and the Wolastoqiyik Wahsipekuk (Maliseet Viger) First Nation. A group of 10 to 14 participants from various backgrounds was recruited from each community. The Nominal group technique was used and transcripts were qualitatively analyzed. Results: All communities combined, winning strategies to increase supply were increasing local distribution networks and facilitating sustenance fishing. Winning strategies to increase demand were discovering the products through tasting and cooking, protecting cultural history of fishing, and marketing and educating about the products. Emergent species (sea urchins, algae, seals) particularly interested participants. The most popular target groups were youth and the community as a whole. Qualitative analysis revealed the important cultural ties to fishing in all communities. Also, critical analysis of the method revealed aspects like the importance of correctly recruiting participants, of having an experienced facilitator, and the usefulness of qualitative analysis. Conclusion: Our sample of Saint-Lawrence coastal communities created consensus around many resources that should receive more availability and more promotion, and around target groups that should include everyone in a community while targeting youth. This study is a first step in a research project that will lead to Quebeckers getting Sustenance from our Saint-Lawrence.
- Published
- 2021
11. Crustacés parasites et epizoïtes du Cachalot, Physeter catodon Linnaeus, 1758 (Cetacea, Odontoceti), dans le golfe du Lion (Méditerranée occidentale)
- Author
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Oliver G. and Trilles J-.P.
- Subjects
Cachalot ,crustacé ,parasite ,épizoïte ,Méditerranée ,Infectious and parasitic diseases ,RC109-216 - Abstract
Les auteurs signalent, pour la première fois, la fixation du Cirripède Conchoderma virgatum (Spengler, 1790) sur un Amphipode Cyamidé parasite d'un jeune Cachalot, Physeter catodon Linnaeus, 1758, échoué sur la côte du golfe du Lion (Méditerranée occidentale). Grâce à l'utilisation du microscope électronique à balayage, ils apportent des précisions sur la morphologie et fournissent quelques observations concernant la reproduction et la biogéographie de ce parasite, Neocyamus physeteris (Pouchet, 1888).
- Published
- 2000
- Full Text
- View/download PDF
12. Rapport statistique des exportations de produits de la pêche 2020
- Author
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Direction des Industries de Transformation de la Pêche
- Subjects
C::Canned fishery products [ASFA_2015] ,conserve ,G::Gastropod fisheries [ASFA_2015] ,C::Commercial species [ASFA_2015] ,E::Echinoderm fisheries [ASFA_2015] ,C::Crustaceans (marine) [ASFA_2015] ,statistique ,M::Mollusks (marine) [ASFA_2015] ,C::Cephalopod fisheries [ASFA_2015] ,F::Fisheries statistics [ASFA_2015] ,valeur commerciale ,échinoderme ,E::Exports [ASFA_2015] ,poisson ,crustacé ,mollusque ,F::Fish flour [ASFA_2015] ,F::Fish products [ASFA_2015] ,farine de poisson ,F::Fish oils [ASFA_2015] ,gastéropode ,produit transformé ,huile de poisson - Abstract
Published Refereed
- Published
- 2020
13. INTRA- AND INTER-SPECIFIC VARIABILITY IN SOME ASPECTS OF THE REPRODUCTION OF ONISCIDISOPODS.
- Author
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WARBURG, M. R.
- Subjects
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ISOPODA , *BIOLOGICAL variation , *OVARIES , *EMBRYOLOGY , *ANIMAL species , *REPRODUCTION - Abstract
Intra- and inter-specific variability in the reproduction of oniscid isopods is encountered during all stages of the reproductive cycle in the dimensions of the ovaries and oocytes, as well as in the numbers of the latter. It is also noticeable in numbers of marsupial eggs, embryos and mancae, as well as in the numbers of newborn mancae. The lowest intra-specific variability (3.3%) was found in the number of oocytes in Hemilepistus reaumurii, but generally exceeded 10%. Thus, interspecific variability ranges between 15.7 and 19% in ovarian length and between 29 and 40% in width, depending on the species. It ranges over 11.4-43.3% in oocyte diameter. Variability in oocyte numbers ranged from 3.3 to 18.6% depending on the species. The range of variability varied between 8.3 and 23.9% in five different species. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
14. Exposure to bisphenol A modulates hormone concentrations in Gammarus pseudolimnaeus.
- Subjects
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BISPHENOL A , *HORMONE regulation , *GAMMARUS pseudolimnaeus , *ENDOCRINE disruptors , *AQUATIC habitats , *LANDFILLS , *TESTOSTERONE - Abstract
Bisphenol A (BPA) is an endocrine-disrupting compound that can enter aquatic systems through landfill leachate or wastewater effluent. Although impacts of BPA on vertebrates are well documented, its effects on invertebrates are less clear. Amphipods such as Gammarus pseudolimnaeus Bousfield, 1958 are often prevalent invertebrates in freshwater ecosystems and can provide a powerful invertebrate model system to investigate the endocrine-disruptive capabilities of BPA. However, techniques to assay hormone concentrations in amphipods, especially vertebrate-like steroid sex hormones, are not widespread. In this study, we ( i) quantified estrogen concentrations in juveniles and in adult female amphipods; ( ii) quantified testosterone concentrations in juveniles and in adult male amphipods; and ( iii) delineated changes to estrogen and testosterone concentrations of adults and juveniles following a 9-day exposure to BPA at four levels: 0 (control), 10, 50, and 100 µg/L BPA. Tissue extracts from homogenized samples were analyzed for estrogen or testosterone concentrations via radioimmunoassay for each reproductive class of amphipod. Low concentrations of BPA significantly increased estrogen concentrations in adult females and in juveniles. Moderate and high concentrations of BPA significantly increased testosterone concentrations in adult males, and low and moderate concentrations of BPA significantly increased testosterone concentrations of juveniles. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
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15. The energetic cost of parasitism in isopods.
- Author
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Lettini, Stacey E. and Sukhdeo, Michael V. K.
- Abstract
Copyright of Ecoscience (Ecoscience) is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2010
- Full Text
- View/download PDF
16. Cloning and sequencing of tubulin cDNAs from Artemia franciscana: evidence for differential expression of α- and β-tubulin genes.
- Author
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Garant, Katy A. and MacRae, Thomas H.
- Subjects
- *
MOLECULAR cloning , *DNA , *ARTEMIA , *GENE expression , *GENES - Abstract
Tubulin is a heterodimeric protein composed of α- and β-tubulin. In most organisms, they are encoded by multiple gene families whose members are subject to differential regulation. The objective of the work described herein was to better understand tubulin gene expression in the extremophile Artemia franciscana To this end tubulin cDNAs were cloned and sequenced. αAT2, an α-tubulin cDNA, differed by one nucleotide from αAT1, a previously cloned Artemia cDNA. This change, possibly generated by allelic variation, caused an M313V substitution in α-tubulin. The amino acid sequence of β-tubulin encoded by βAT1, one of only a very limited number of cloned crustacean β-tubulin cDNA sequences yet available, and the first from Artemia, was similar to other β-tubulins. However, βAT1 possessed four degenerate TATA boxes in the 5′ untranslated region, although authentic TATA and CCAAT boxes occurred in the 3′ non-coding sequence. Analyses by quantitative PCR demonstrated that the amount of tubulin mRNA declined relative to total mRNA in progressive life history stages of Artemia and also that the organism contained more αAT2- than βAT1-tubulin mRNA at all developmental phases examined. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
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17. DNA methylation, histone H3 methylation, and histone H4 acetylation in the genome of a crustacean.
- Author
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Barzotti, Rita, Pelliccia, Franca, and Rocchi, Angela
- Subjects
- *
IMMUNOGLOBULINS , *HISTONES , *ASELLUS aquaticus , *CHROMOSOMES , *ASELLUS - Abstract
In this work, we used antibodies against histone H3 trimethylated at lysine 9 (H3K9m3); against histone H4 acetylated at lysines 5, 8, 12, and 16 (H4ac); and against DNA methylated at 5C cytosine (m5C) to study the presence and distribution of these markers in the genome of the isopod crustacean Asellus aquaticus. The use of these 3 antibodies to immunolabel spermatogonial metaphases yields reproducible patterns on the chromosomes of this crustacean. The X and Y chromosomes present an identical banding pattern with each of the antibodies. The heterochromatic telo meric regions and the centromeric regions are rich in H3K9m3, but depleted in m5C and H4ac. Thus, m5C does not seem to be required to stabilize the silence of these regions in this organism. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
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18. Rapport statistique des exportations de produits de la pêche 2018
- Author
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Direction des Industries de Transformation de la Pêche
- Subjects
C::Canned fishery products [ASFA_2015] ,conserve ,C::Commercial species [ASFA_2015] ,G::Gastropod fisheries [ASFA_2015] ,transformation ,E::Echinoderm fisheries [ASFA_2015] ,commercialisation ,P::Processed fishery products [ASFA_2015] ,C::Cephalopod fisheries [ASFA_2015] ,exportation ,F::Fisheries statistics [ASFA_2015] ,échinoderme ,E::Exports [ASFA_2015] ,poisson ,crustacé ,mollusque ,F::Fish flour [ASFA_2015] ,farine de poisson ,F::Fish oils [ASFA_2015] ,gastéropode ,M::Molluscs [ASFA_2015] ,céphalopode ,huile de poisson - Abstract
Published Refereed
- Published
- 2018
19. Evolutionary mechanisms at the basis of genetic diversity maintenance and adaptive consequences : the example of the woodlouse Armadillidium vulgare
- Author
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DURAND, Sylvine, Ecologie et biologie des interactions (EBI), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Université de Poitiers, Christine Braquart-Varnier, and Sophie Beltran-Bech
- Subjects
Traits d'histoire de vie ,Heterozygosity ,Hétérozygotie ,Valeur sélective ,Crustacean ,Life history traits ,Compatibilité génétique ,Cloporte ,Crustacé ,[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics ,Sexual selection ,Sélection sexuelle ,Fitness ,Woodlouse ,Genetic compatibility - Abstract
Genetic diversity is a crucial parameter for both populations and individuals. As such, heterozygosity often confers a selective advantage to individuals in numerous taxa, and sexual selection processes can result in an optimisation of offspring heterozygosity. We tested these hypotheses in the terrestrial isopod Armadillidium vulgare. In this work, we highlighted a higher reproductive success for more heterozygous males, which could result from both intrasexual competition and mate choice, as well as a choice for a genetically dissimilar partner. These two processes result in an increase in offspring heterozygosity. Moreover, we described for the first time a high rate of multiple paternity in natural as well as in experimental populations, increasing brood allelic richness and allowing post-copulatory sexual selection processes. Besides, we showed that more heterozygous individuals survive better when confronted to a bacterial infection, probably through a better tolerance. More heterozygous individuals are also bigger at the same age, which is particularly important in females because a big size leads to a higher fecundity. These results suggest that various mechanisms result in genetic diversity maintenance in A. vulgare populations and confer a better fitness to individuals. Thereby, it is likely that populations of this terrestrial isopod possess a high adaptive potential enabling their long-term maintenance.; La diversité génétique est un paramètre capital pour les populations comme pour les individus. Ainsi, l'hétérozygotie confère généralement un avantage de valeur sélective aux individus dans de nombreux taxa, et il existe divers processus de sélection sexuelle permettant d'optimiser l'hétérozygotie de la descendance. Nous avons testé ces hypothèses chez l'isopode terrestre Armadillidium vulgare. Nous avons pu mettre en évidence un meilleur succès reproducteur des mâles les plus hétérozygotes, qui peut résulter de la compétition intrasexuelle comme du choix de partenaire, ainsi que d'un choix pour un partenaire génétiquement dissimilaire. Ces deux processus ont pour conséquence d'augmenter l'hétérozygotie des descendants. Nous avons aussi décrit pour la première fois un fort taux de paternité multiple dans les populations naturelles comme expérimentales, augmentant la richesse allélique des portées et permettant à la sélection sexuelle post-copulatoire d'avoir lieu. De plus, nous avons pu observer que les animaux les plus hétérozygotes survivent mieux face à une infection bactérienne, probablement via une meilleure tolérance. Les individus les plus hétérozygotes sont également plus gros à âge équivalent, ce qui revêt une importance particulière pour les femelles puisqu'une grande taille leur confère une meilleure fécondité. Ces résultats suggèrent que divers mécanismes sont à l'origine du maintien de la diversité génétique dans les populations d'A. vulgare et confèrent aux individus une meilleure valeur sélective. Ainsi les populations de cet isopode terrestre possèdent vraisemblablement un potentiel adaptatif important permettant leur maintien à long terme.
- Published
- 2017
20. Mécanismes évolutifs à la base du maintien de la diversité génétique et conséquences adaptatives chez l'isopode terrestre armadillidium vulgare
- Author
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DURAND, Sylvine, Ecologie et biologie des interactions (EBI), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Université de Poitiers, Christine Braquart-Varnier, and Sophie Beltran-Bech
- Subjects
Traits d'histoire de vie ,Heterozygosity ,Hétérozygotie ,Valeur sélective ,Crustacean ,Life history traits ,Compatibilité génétique ,Cloporte ,Crustacé ,[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics ,Sexual selection ,Sélection sexuelle ,Fitness ,Woodlouse ,Genetic compatibility - Abstract
Genetic diversity is a crucial parameter for both populations and individuals. As such, heterozygosity often confers a selective advantage to individuals in numerous taxa, and sexual selection processes can result in an optimisation of offspring heterozygosity. We tested these hypotheses in the terrestrial isopod Armadillidium vulgare. In this work, we highlighted a higher reproductive success for more heterozygous males, which could result from both intrasexual competition and mate choice, as well as a choice for a genetically dissimilar partner. These two processes result in an increase in offspring heterozygosity. Moreover, we described for the first time a high rate of multiple paternity in natural as well as in experimental populations, increasing brood allelic richness and allowing post-copulatory sexual selection processes. Besides, we showed that more heterozygous individuals survive better when confronted to a bacterial infection, probably through a better tolerance. More heterozygous individuals are also bigger at the same age, which is particularly important in females because a big size leads to a higher fecundity. These results suggest that various mechanisms result in genetic diversity maintenance in A. vulgare populations and confer a better fitness to individuals. Thereby, it is likely that populations of this terrestrial isopod possess a high adaptive potential enabling their long-term maintenance.; La diversité génétique est un paramètre capital pour les populations comme pour les individus. Ainsi, l'hétérozygotie confère généralement un avantage de valeur sélective aux individus dans de nombreux taxa, et il existe divers processus de sélection sexuelle permettant d'optimiser l'hétérozygotie de la descendance. Nous avons testé ces hypothèses chez l'isopode terrestre Armadillidium vulgare. Nous avons pu mettre en évidence un meilleur succès reproducteur des mâles les plus hétérozygotes, qui peut résulter de la compétition intrasexuelle comme du choix de partenaire, ainsi que d'un choix pour un partenaire génétiquement dissimilaire. Ces deux processus ont pour conséquence d'augmenter l'hétérozygotie des descendants. Nous avons aussi décrit pour la première fois un fort taux de paternité multiple dans les populations naturelles comme expérimentales, augmentant la richesse allélique des portées et permettant à la sélection sexuelle post-copulatoire d'avoir lieu. De plus, nous avons pu observer que les animaux les plus hétérozygotes survivent mieux face à une infection bactérienne, probablement via une meilleure tolérance. Les individus les plus hétérozygotes sont également plus gros à âge équivalent, ce qui revêt une importance particulière pour les femelles puisqu'une grande taille leur confère une meilleure fécondité. Ces résultats suggèrent que divers mécanismes sont à l'origine du maintien de la diversité génétique dans les populations d'A. vulgare et confèrent aux individus une meilleure valeur sélective. Ainsi les populations de cet isopode terrestre possèdent vraisemblablement un potentiel adaptatif important permettant leur maintien à long terme.
- Published
- 2017
21. Active biomonitoring using the freshwater crustacean Gammarus fossarum: an operational tool to monitor chemical contamination and toxicity in continental surface waterbodies
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Recoura Massaquant, R., Maurice, Aurélie, Tsoukalas, A., Hombert, T., Penru, Y., Chaumot, Arnaud, Olivier, Geffard, Jubeaux, G., BIOMAE VILLEURBANNE FRA, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), SUEZ ENVIRONNEMENT (FRANCE), Milieux aquatiques, écologie et pollutions (UR MALY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CIRSEE SUEZ GROUP LE PECQ FRA, and IRSTEA LYON UR MALY FRA
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CONTAMINATION ,TOXICITE ,CRUSTACE ,biomonitoring ,[SDE]Environmental Sciences ,BIOSURVEILLANCE ,GAMMARUS ,toxicity ,freshwater ,EAU DOUCE - Abstract
International audience; The degree of pollution of waterbodies is traditionally appraised by micropollutants research and quantification applied in sediment or in water. While this chemical approach can determine contamination of the targeted compounds in waterbodies, it is inadequate for assessing the bioavailability of chemical substances and toxic impact of aquatic environments (characterized by complex mixture of pollutants) which are currently proposed as complementary analysis. Because of the need of such diagnosis tools for public and private managers, substantial efforts have been made over the last 30 years to develop and apply innovating biological approaches for risk assessment. In this context, this presentation focuses on using a crustacean model, the freshwater amphipod Gammarus fossarum, to assess chemical contamination and toxicity. Our approach of active biomonitoring, based on calibration of “control” individuals (size, sex, population,…) which were exposed during 7 days directly in waterbodies (by caging methodology), is an integrative and relevant approach for field experiments. To demonstrate it, we will show how in situ bioassays bring complementary information to public and private managers in illustrating by various cases of study: waste water treatment plant, storm pillway, dam draining as well as industrial sites. During these field experiments, we finally assessed 1- level of bioavailability contamination for metallic and organic compounds in exposed gammarids and 2- ecotoxicological effects on global parameters (survival, feeding rate, reprotoxicity) and on specific parameters (acetylcholinesterase activity, endocrine disruption). For a reliable data interpretation, we proposed threshold values for bioaccumulated concentrations and biological responses. The general purpose is to highlight the operational, cost-effective and reliable character of active monitoring using gammarids for a large scale deployment in waterbodies.
- Published
- 2017
22. Rapport statistique des exportations de produits de la pêche 2017
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Direction des Industries de Transformation de la Pêche
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conserve ,G::Gastropod fisheries [ASFA_2015] ,E::Echinoderm fisheries [ASFA_2015] ,P::Processed fishery products [ASFA_2015] ,C::Cephalopod fisheries [ASFA_2015] ,F::Fisheries statistics [ASFA_2015] ,échinoderme ,E::Exports [ASFA_2015] ,poisson ,crustacé ,mollusque ,S::Statistics [ASFA_2015] ,farine de poisson ,F::Fish oils [ASFA_2015] ,gastéropode ,C::Commercial fisheries [ASFA_2015] ,céphalopode ,C::Canned fishery products [ASFA_2015] ,C::Commercial species [ASFA_2015] ,transformation ,commercialisation ,C::Crustaceans (marine) [ASFA_2015] ,statistique ,exportation ,F::Fish flour [ASFA_2015] ,valeur ,M::Molluscs [ASFA_2015] ,huile de poisson - Abstract
Published Refereed
- Published
- 2017
23. Estimating natural mortality and egg production of snow crab Chionoecetes opilio adult females
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Daniel E. Duplisea, Hilaire Drouineau, Bernard Sainte-Marie, Ecosystèmes estuariens et poissons migrateurs amphihalins (UR EPBX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Institut Maurice Lamontagne, and Pêches et Océans Canada
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0106 biological sciences ,QH301-705.5 ,Population ,Fishing ,OEUF ,CRUSTACE ,TERMINAL MOLT ,Context (language use) ,Aquatic Science ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,Microbiology ,BODY SIZE ,14. Life underwater ,Carapace ,Biology (General) ,education ,Ecology, Evolution, Behavior and Systematics ,education.field_of_study ,Ecology ,biology ,CHIONOECETES OPILIO ,010604 marine biology & hydrobiology ,Mortality rate ,biology.organism_classification ,Snow ,Crustacean ,QR1-502 ,EGG PRODUCTION ,Fishery ,PREDICTION DE LA MORTALITE ,Chionoecetes opilio ,TAILLE ,[SDE]Environmental Sciences ,NATURAL MORTALITY - Abstract
Natural mortality rate is a key parameter in ecology and fisheries, but it may be difficult to estimate for methodological reasons and because it is highly variable and often confounded with other factors such as fishing mortality and migration. This is especially true for crustaceans in general, because age determination is problematic, and for snow crab (Chionoecetes opilio) in particular because density-dependent processes may lead to highly variable mortality rates across life history stages. In this context, we developed an original method to estimate the natural mortality rate of adult (i.e. terminally molted) female snow crab, and its consequences on egg production. This new method relies on shell condition, carapace width and abundance of adult females and was applied to a time series (1991–2012) of annual trawl survey data for a snow crab population in the Gulf of St. Lawrence, eastern Canada. Two natural mortality estimates were provided by the method depending on two distinct assumptions about the survey. Both estimates (0.66 and 0.78 year–1) were high compared to previous estimates for snow crab. These values imply that female life expectancy after terminal molt was short and that primiparous females (first-time spawners) contributed a large share (at least 81%) of the total number of eggs produced by the case-study population over the period 1992–2010.
- Published
- 2013
24. Actualisation de la faune de Crustacésfossiles du Bathonien Supérieur de Ranville(Calvados, France)
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Pezy, Jean-Philippe, Gendry, Damien, Morphodynamique Continentale et Côtière (M2C), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Géosciences Rennes (GR), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Société Géologique de France, Dubigeon, Isabelle, Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), and Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)
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décapode ,Bathonien ,crustacé ,[SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy ,[SDU.STU.ST] Sciences of the Universe [physics]/Earth Sciences/Stratigraphy ,[SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/Paleontology ,[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology - Abstract
National audience; La Normandie est depuis longtemps une zone riche en fossilesétudiés par de nombreux paléontologues depuis le 19ème siècle(Eudes-Deslongchamps, 1835; Hée 1924; Morière 1864; Remy,1955; Van Straelen, 1925). De nombreuses espèces de crustacésont été décrites dans cette région dans le passé et, en particulier,cinq espèces de décapodes dans le Bathonien de Ranville (Calvados).Malheureusement, la plupart des types ont disparu à causedes bombardements pendant la Seconde Guerre mondiale. Lesdeux auteurs ont exploré les niveaux du Jurassique pendant 5 ansà la recherche de nouveaux spécimens de crustacés fossiles. Ici,nous fournissons une synthèse sur la faune de décapodes trouvéedans la ”Caillasse à céphalopodes de Ranville” appartenant à laformation de la Caillasse de Basse-Ecarde (Bathonien Supérieur)(Rioult & al., 1989). Cette unité est composée de calcaires bioclastiqueset biomicritiques qui fournissent une faune très riche(coraux, éponges, oursins, bivalves, dents de requin ...) et quicorrespondent à des eaux peu profondes dans un bassin d’avantrécif.Les résultats préliminaires mettent en évidence une faune de crustacédiversifiée constituée de pagures - les plus fréquents - avecdes chélipèdes isolés (Orhomalus sp., Palaeopagurus tuberculatusVan Straelen 1924, P. sp. nov., Paguridae gen. nov., sp. nov.),glypheids (Glyphea sp.1 et G. sp.2, Glypheidae indet.) et brachyoures(” Nodoprosopon ” langrunensis Hée 1924 ; Pithonotonmoutieri Hée 1924 ; Galatheidae indet.). Un carapace de brachyouresa été trouvée associée à un terrier assigné à Thalassinoides.Cette carapace est parallèle à l’axe longitudinal du terrier et laissesupposer un abri pour le crabe. Ce niveau est également riche enAtractosoecia incrustans (d’Orbigny, 1850), une espèce de bryozoairessymbiotiques des pagures et recouvrant les coquilles degastéropodes (Buge & Fischer, 1970).En outre, la ”Surface de Lion” a donné un isopode (Reboursiaranvillensis Guinot et al., 2005) (Guinot et al., 2005). Enfin,Hebertides Jurassica GUINOT et al., 2007 a été récemment réassignéeau Tertiaire et exclue du Bathonien de la carrière de Ranvillesuite à l’étude des bryozoaires associés au crabe (Taylor et al.,2012).
- Published
- 2016
25. Annotated checklist of brachyuran crabs (Crustacea: Decapoda) of the Iberian Peninsula (SW Europe)
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Jose Enrique García-Raso, Ferran Palero, J.I. González-Gordillo, Pere Abelló, Guillermo Guerao, Pilar Drake, José A. Cuesta, Elena Marco-Herrero, Biología, Instituto de Ciencias Marinas de Andalucia [Cádiz, Espagne] (ICMAN), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Departamento de Biología Animal, Facultad de Ciencias, Universidad de Málaga [Málaga] = University of Málaga [Málaga], University of Cadiz, Independent, Institut Sophia Agrobiotech (ISA), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Recherche Agronomique (INRA), 'Ministerio de Economia y Competividad (MINECO)' Spanish Plan R+D+I [CGL2009-11225], FEDER, Ministerio de Economía y Competitividad (España), European Commission, and Marco-Herrero, Elena
- Subjects
0106 biological sciences ,Mediterranean climate ,Brachyura ,[SDV]Life Sciences [q-bio] ,Fauna ,SH1-691 ,espagne ,Península Ibérica ,Aquatic Science ,lista ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,lcsh:Aquaculture. Fisheries. Angling ,cangrejo ,brachyura ,decapoda ,crustacé ,Peninsula ,Crustacea ,Decapoda ,Aquaculture. Fisheries. Angling ,crab ,14. Life underwater ,lcsh:SH1-691 ,geography ,geography.geographical_feature_category ,biology ,Ecology ,010604 marine biology & hydrobiology ,crabe rouge ,crustacea ,biology.organism_classification ,Crustacean ,Checklist ,península Ibérica ,iberian peninsula ,Taxon ,Lista ,[SDE]Environmental Sciences ,checklist ,Iberian Peninsula ,étude de référence ,Global biodiversity - Abstract
14 pages, 1 figure, 3 tables, [EN] Almost 50 years have passed since a group of reputed carcinologists (viz. Lipke B. Holthuis, Isabella Gordon and Jacques Forest) finished the posthumous work of Ricardo Zariquiey Álvarez (1968) on decapod crustaceans of the Iberian Peninsula. No lists of decapod fauna specifically covering this area have been published since then, and an update is needed. The current list of brachyuran crabs of the Iberian Peninsula comprises 140 species, which is 35 species more than the 105 valid species listed in Zariquiey Álvarez (1968). Systematic changes have affected the original classification, so now there are 20 superfamilies, 36 families and 77 genera. Additional species have been recorded in Iberian waters due to natural range expansions from nearby areas (Mediterranean and Atlantic), introductions by anthropogenic activities, and description of new taxa. Also, two species were synonymized. Several of these changes, based on evidence from larval morphology and/or molecular data, are detailed in this review. Although descriptions of crab species new to science are not expected to occur at a significant rate, an increase in the number of species in the Iberian Peninsula is expected to result from the introduction of alien species. © 2015 CSIC, ES] Han pasado casi 50 años desde que un grupo de reputados carcinólogos (viz. Lipke B. Holthuis, Isabella Gordon y Jacques Forest) finalizaran la obra póstuma de Ricardo Zariquiey Álvarez (1968), “Crustáceos decápodos de la Península Ibérica”. Desde entonces no se ha publicado una lista de la fauna de decápodos que cubra específicamente este área, y era necesaria una actualización. La lista actual de braquiuros de la Península Ibérica consta de un total de 140 especies, 35 especies más de las 105 especies válidas enumeradas en Zariquiey Álvarez (1968). Los cambios en la sistemática han afectado la clasificación original, por lo que ahora hay 20 superfamilias, 36 familias y 77 géneros. Otras especies han sido citadas en aguas ibéricas debido a expansiones naturales de su rango de distribución desde áreas cercanas (Mediterráneo y Atlántico), a las introducciones mediadas por las actividades antropogénicas y a la descripción de nuevas especies. Además, se han sinonimizado dos especies. Varios de estos cambios, basados en evidencias de la morfología de las larvas y/o datos moleculares, se detallan en esta revisión. Aunque no se espera que las descripciones de nuevas especies de cangrejos para la ciencia se produzcan a un ritmo significativo, si es esperable un incremento en el número de especies en la Península Ibérica como resultado de la introducción de especies exóticas, This research was carried out within the framework of the MEGALOPADN project (CGL2009-11225) funded by the “Ministerio de Economía y Competividad (MINECO)” Spanish Plan R+D+I and FEDER. Marco-Herrero acknowledges the pre-doctoral FPI Fellowship (BES-2010-033297), and the present study was carried out as part of her PhD Thesis
- Published
- 2015
- Full Text
- View/download PDF
26. Diel vertical migrations and feeding behavior of the mysid Rhopalophthalmus africana (Crustacea: Mysidacea) in a tropical lagoon (Ebrié, Côte d'Ivoire)
- Author
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Jean Claude Sorbe, Ernest Kouassi, Lucien Saint-Jean, and Marc Pagano
- Subjects
REPARTITION VERTICALE ,CHAINE ALIMENTAIRE ,PREDATION ,biology ,Ecology ,CRUSTACE ,fungi ,Mysidacea ,Zoology ,NIVEAU TROPHIQUE ,Aquatic Science ,Nocturnal ,Oceanography ,biology.organism_classification ,Crustacean ,Zooplankton ,Predation ,MIGRATION TROPHIQUE ,Phytoplankton ,Grazing ,ZOOPLANCTON ,Diel vertical migration ,LAGUNE ,ANALYSE STATISTIQUE - Abstract
Time-series sampling, gut content analysis, gut fluorescence measurements, and experiments on feeding, respiration and ammonia excretion were performed at a fixed station (4.5 m depth) on four occasions (from 1990 to 1997) to evaluate the impact of mysids on phytoplankton and zooplankton in a tropical brackish lagoon. Rhopalophthalmus africana , the dominant species, exhibited marked upward migrations at night. Grazing experiments showed that R. africana did not consume sestonic particles in most cases. Predation experiments showed that R. africana actively consumed zooplankton and selected prey according to their size and/or their abundance. The predation rate increased linearly with increasing prey concentration and did not taper at highest prey concentration. A low metabolic oxygen to nitrogen ratio (O/N, 5–13 at:at) reinforced the assumption of a relatively permanent carnivory. Nocturnal increase in gut fullness suggests night-time feeding, but relatively high gut fluorescence during the day, resulting mainly from a fluorimetric tracing of animal prey, suggested also a diurnal ingestion of zooplankton items concentrated near the bottom. The daily grazing impact of R. africana on phytoplankton was very low (0.14% of the in situ chlorophyll concentration), whereas its daily nutrient recycling through excretion (8–15% of the in situ NH 4 concentration) was rather high. The predation impact (33–154% of the zooplankton production) was high and suggests an important role of mysids to explain the low zooplankton/phytoplankton biomass ratio and the low transfer efficiency observed within the food chain of the western part of Ebrie Lagoon.
- Published
- 2006
27. Survival, growth and reproduction of cryopreserved larvae from a marine invertebrate, the pacific oyster (Crassostrea gigas)
- Author
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Isabelle Queau, Myrina Boulais, Blandine Diss, Dominique Ratiskol, Christian Mingant, Catherine Labbé, Sophie Puyo, Marc Suquet, Benjamin Quittet, Pierrick Haffray, UMR 6539, PFOM Department, Station Experimentale d'Argenton, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire de Physiologie et Génomique des Poissons (LPGP), Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Syndicats des sélectionneurs avicoles et aquacoles français (SYSAAF), UR1037 Laboratoire de Physiologie et Génomique des Poissons, Institut National de la Recherche Agronomique (INRA), Satmar, National Project CRECHE (Ofimer 136/08/C) & Cryoaqua (GIS IBISA) & European Union (FEP 30906-2009), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), SATMAR, and Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Male ,Oyster farming ,Aquaculture ,Cryopreservation ,Human fertilization ,Cryoprotective Agents ,stade larvaire ,Freezing ,Biologie de la reproduction ,crassostrea gigas ,media_common ,DAMAGE ,Animal biology ,Reproductive Biology ,Multidisciplinary ,biology ,[SDV.BA]Life Sciences [q-bio]/Animal biology ,Agriculture ,Pacific oyster ,Larva ,Sperm Motility ,Medicine ,Crassostrea ,Female ,Reproduction ,Research Article ,animal structures ,OOCYTES ,Science ,media_common.quotation_subject ,Marine Biology ,Andrology ,reproduction ,performance de reproduction ,Cryobiology ,EMBRYOS ,FISH ,Biologie animale ,survie larvaire ,Animals ,crustace ,14. Life underwater ,Oyster Farming ,huître ,ACL ,Body Weight ,fungi ,Biology and Life Sciences ,[SDV.BDLR]Life Sciences [q-bio]/Reproductive Biology ,biology.organism_classification ,cryoconservation ,Sperm ,Invertebrates ,Ostreidae ,croissance ,Fishery ,Fertilization ,Mariculture ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,SYSTEM ,SPERM - Abstract
This study is the first demonstration of successful post-thawing development to reproduction stage of diploid cryopreserved larvae in an aquatic invertebrate. Survival, growth and reproductive performances were studied in juvenile and adult Pacific oysters grown from cryopreserved embryos. Cryopreservation was performed at three early stages: trochophore (13 +/- 2 hours post fertilization: hpf), early D-larvae (24 +/- 2 hpf) and late D-larvae (43 +/- 2 hpf). From the beginning (88 days) at the end of the ongrowing phase (195 days), no mortality was recorded and mean body weights did not differ between the thawed oysters and the control. At the end of the growing-out phase (982 days), survival of the oysters cryopreserved at 13 +/- 2 hpf and at 43 +/- 2 hpf was significantly higher (P
- Published
- 2014
28. Crustacés parasites et epizoïtes du Cachalot,Physeter catodonLinnaeus, 1758 (Cetacea, Odontoceti), dans le golfe du Lion (Méditerranée occidentale)
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G Oliver and J P Trilles
- Subjects
Méditerranée ,Mediterranean climate ,Amphipoda ,biology ,épizoïte ,Veterinary (miscellaneous) ,Biogeography ,Cetacea ,Zoology ,Aquatic animal ,biology.organism_classification ,Crustacean ,Cachalot ,lcsh:Infectious and parasitic diseases ,Infectious Diseases ,Mediterranean sea ,crustacé ,Insect Science ,Sperm whale ,parasite ,lcsh:RC109-216 ,Animal Science and Zoology ,Parasitology - Abstract
Les auteurs signalent, pour la première fois, la fixation du Cirripède Conchoderma virgatum (Spengler, 1790) sur un Amphipode Cyamidé parasite d'un jeune Cachalot, Physeter catodon Linnaeus, 1758, échoué sur la côte du golfe du Lion (Méditerranée occidentale). Grâce à l'utilisation du microscope électronique à balayage, ils apportent des précisions sur la morphologie et fournissent quelques observations concernant la reproduction et la biogéographie de ce parasite, Neocyamus physeteris (Pouchet, 1888).
- Published
- 2000
29. The importance of fisheries and aquaculture production for nutrition and food security.
- Author
-
Norman RA, Crumlish M, and Stetkiewicz S
- Subjects
- Animals, Crustacea, Fishes, Humans, Aquaculture, Fisheries, Food Supply standards
- Abstract
Aquatic food has a significant role to play in global nutrition and food security but is often ignored in that debate. Understanding its potential role is made difficult by the fact that aquatic food covers a large number of species which come from both capture fisheries and aquaculture and the marine and freshwater environments, including finfish, crustacea, molluscs, echinoderms, aquatic plants and other aquatic animals. Further complications arise from the fact that both supply and consumption vary significantly between countries. There are several criteria which need to be considered when discussing nutrition and food security. These include: how much food is produced, whether that production is sustainable, whether the production supports livelihoods, what the nutritional content of the food is and whether that food is safe. The authors conclude that there are many benefits to aquatic food under each of these criteria but there are also some hurdles which need to be overcome. Increased production to feed a growing global population relies on the growth of aquaculture. Challenges to such growth include the supply of raw ingredients for aquafeeds, losses due to disease outbreaks, being able to ensure high standards of food safety and overcoming environmental limitations to expansion. There are also problems with welfare conditions for people working in the supply chain which need to be addressed. Given the challenges to nutrition and food security which the world is currently facing, it is essential that aquatic food is brought into the debate and the significant benefits that aquatic foods provide are acknowledged and exploited.
- Published
- 2019
- Full Text
- View/download PDF
30. Food safety impacts of finfish and crustacean aquaculture on food security in Asia.
- Author
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Khor DX, Fernandez CJ, Chee DM, Teo XH, Han ZY, Jiang JH, Neo HS, Chang SF, and Yap HH
- Subjects
- Animals, Asia, Food Safety, Aquaculture standards, Crustacea, Fishes, Food Supply standards
- Abstract
Asia is the world's largest aquaculture producer. The aquaculture industry faces a multitude of threats ranging from microbiological and chemical to parasitic. These threats could potentially affect aquatic animal health and food safety and alter the consumer's perception of aquacultural produce. The development of antimicrobial resistance is also of increasing concern. These actual or perceived food safety threats could result in reductions in the food supply that adversely affect the food security of a country or region. Harmonised regional regulatory requirements, increased consumer awareness and the adoption of good aquaculture practices are ways in which the aquaculture industry can mitigate these risks. Together with the increased use of smart technology in production and encouragement to adopt certification and accreditation schemes, these tools can help the aquaculture industry in Asia to become more resilient in the face of such challenges. In this paper, the authors present an insight into the hazards faced by the aquaculture industry, which could potentially adversely affect food supply and hence food security, in an Asian context. The authors make several recommendations to mitigate these risks and thus safeguard against disruptions to regional food security.
- Published
- 2019
- Full Text
- View/download PDF
31. Impact environnemental des pneumatiques déchiquetés utilisés pour la construction d’ouvrages en remblai
- Author
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Hennebert, P., Charrasse, B., Benard, A., Lambert, S., Institut National de l'Environnement Industriel et des Risques (INERIS), Erosion torrentielle neige et avalanches (UR ETGR (ETNA)), and Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
- Subjects
lcsh:GE1-350 ,PERCOLATION ,IMPACT ,LIXIVIATION ,CRUSTACE ,ECOTOXICOLOGIE ,BACTERIE ,ENVIRONNEMENT ,6. Clean water ,lcsh:TD1-1066 ,PNEUMATIQUE ,INCENDIE ,DÉCHET ,REGLEMENTATION ,DECHET ,[SDE]Environmental Sciences ,lcsh:Environmental technology. Sanitary engineering ,lcsh:Environmental sciences - Abstract
Les pneumatiques usagés sont employés comme matériau de construction pour des ouvrages de génie civil et de géotechnique depuis les années 80. S’agissant de déchets, leur impact sur l’environnement doit être évalué, au regard de l’application visée et de la réglementation en vigueur. Cet article porte sur l’impact environnemental de pneumatiques usagés déchiquetés, lorsqu'ils sont utilisés en mélange avec du sable, pour la construction d’ouvrages en remblai. Des essais de lixiviation, de percolation et au lysimètre ont été réalisés, sur le matériau vierge et sur son résidu après incendie. Les liquides collectés ont été l’objet d’analyses physico-chimiques, considérant deux cents composés, et écotoxicologiques sur une bactérie et un crustacé. Les mesures révèlent un impact très limité en contexte normal. Par contre, les résidus après incendie doivent être envoyés en installation de stockage pour déchets dangereux. / This article deals with the assessment of the environmental impact of shredded scrap tyres mixed with sand to built embankments. Tests of leaching, of percolation and in a lysimeter were performed on the raw material as well as on the tailing resulting from fire. The liquids were analysed looking for 200 compounds and their toxicity on a shellfish and a bacterium was assessed. Measurements confirm the limited consequences on the environment, except in the case of fire, where tailings must be considered as hazardous waste.
- Published
- 2013
32. Host nutrition alters the variance in parasite transmission potential
- Author
-
Vale, P.F., Choisy, Marc, and Little, T.J.
- Subjects
POUVOIR PATHOGENE ,HOTE ,TRANSMISSION ,DISTRIBUTION QUANTITATIVE ,VARIANCE ,CRUSTACE ,ETUDE COMPARATIVE ,ETUDE EXPERIMENTALE ,NUTRITION ,PARASITE ,GENOTYPE - Published
- 2013
33. L'aire marine protégée communautaire de Bamboung (Sine Saloum) : synthèse 2003-2011
- Author
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Simier, Monique, Ecoutin, Jean-Marc (ed.), Béhagle, Nolwenn (collab.), Brochier, Timothée (collab.), Guillard, J. (collab.), Laë, Raymond (collab.), Lebourges Dhaussy, Anne (collab.), Le Loc'h, François (collab.), Raffray, J. (collab.), Sadio, O. (collab.), Simier, Monique (collab.), Sow, I. (collab.), and Tito de Morais, Luis (collab.)
- Subjects
AIRE MARINE PROTEGEE ,BIOMASSE ,PREDATION ,ESPECE DOMINANTE ,MILIEU ESTUARIEN ,STRUCTURE DU PEUPLEMENT ,CRUSTACE ,INVENTAIRE FAUNISTIQUE ,MOLLUSQUE ,POISSON - Published
- 2013
34. Guide de la mensuration des espèces en halieutique, poissons, mollusques, crustacés, reptiles marins, mammifères marins
- Author
-
Badts, Vincent and Bertrand, Jacques
- Subjects
halieutique ,Measurement ,taille ,Mensuration ,mammifère marin ,mollusk ,marine mammal ,size ,poisson ,mollusque ,crustacé ,reptile marin ,fishery ,marine reptile ,fishe ,guideline ,protocole ,shellfishe - Abstract
This guide presents the rules for measuring fi shes, mollusks, shellfi shes, reptiles and marine mammals applicable to the fisheries surveys coordinated by Ifremer, including tasks carried out at the international level, in particular within the European regulation related to the fishery data collection., Ce guide présente les règles de mensuration des poissons, mollusques, crustacés, reptiles et mammifères marins applicables aux observations halieutiques coordonnées par l’Ifremer, y compris les actions conduites dans le cadre de réseaux de surveillance coordonnés au niveau international, en particulier en application du règlement européen relatif à la collecte des données halieutique., Esta guía presenta las reglas para la medición de peces, muluscos, crustáceos, reptiles y mamíferos marinos aplicables a los programas de vigilancia en pesquerías coordinadas por el Ifremer, incluyendo las tareas llevadas a cabo a nivel internacional, en particular dentro del reglamento europeo de la toma de datos.
- Published
- 2012
35. Landscape features correlate with spatial distribution of red-swamp crayfish Procambarus clarkii in a network of ponds
- Author
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J.M. Paillisson, Anne Tréguier, M.A. Schlaepfer, Jean-Marc Roussel, Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), ONEMA, PNR Brière, Cap-Atlantique, CARENE, Parc Naturel régional de Brière, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), and Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
0106 biological sciences ,Marsh ,colonisation ,pays de la loire ,population ,Introduced species ,Wetland ,Management, Monitoring, Policy and Law ,Aquatic Science ,Biology ,010603 evolutionary biology ,01 natural sciences ,Swamp ,écosystème ,milieu aquatique ,lcsh:Aquaculture. Fisheries. Angling ,marais ,crustace ,Ecosystem ,14. Life underwater ,paysage ,Nature and Landscape Conservation ,Water Science and Technology ,Procambarus clarkii ,lcsh:SH1-691 ,geography ,network of ponds ,geography.geographical_feature_category ,Ecology ,010604 marine biology & hydrobiology ,distribution spatiale ,15. Life on land ,espèce introduite ,Crayfish ,biology.organism_classification ,loire atlantique ,colonization ,invasion ,Agricultural sciences ,Fishery ,Biological dispersal ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,europe ,france ,écrevisse ,isolation ,Sciences agricoles - Abstract
The red-swamp crayfish Procambarus clarkii has become the most cosmopolitan freshwater crayfish species in the world as a result of numerous intentional and accidental introductions. This species was introduced approximately 30 years ago into the Brière marshes (France) where it has spread rapidly since this date. The colonization of P. clarkii in the network of ponds surrounding the Brière marshes is poorly documented despite the high conservation value of such ecosystems. Here, we describe the spatial distribution of P. clarkii in a subset of this network of ponds. We also test whether the presence of P. clarkii is explained by three landscape metrics that measure the level of isolation of a pond with other waterbodies (marshes, streams or ponds). Sixty-nine ponds were sampled in spring 2010 using baited funnel traps. P. clarkii was detected in 20% of the sampled ponds. Moreover P. clarkii was most likely to be present in ponds in close proximity of marshes and a stream. These findings suggest that colonization of a pond depends primarily on the proximity to existing populations, despite the efficiency of overland dispersal of P. clarkii.
- Published
- 2011
36. Taxonomy, time and geographic patterns. Chapter 2
- Author
-
Roques, Alain, Unité de recherche Zoologie Forestière (URZF), Institut National de la Recherche Agronomique (INRA), Alain Roques, Marc Kenis, David Lees, Carlos Lopez Vaamonde, Wolfgang Rabitsch, Jean Yves Rasplus, and David Roy
- Subjects
coleoptera ,taxonomie ,[SDV]Life Sciences [q-bio] ,hemiptera ,INVASIVE ALIEN SPECIES ,habitat ,acarina ,diptera ,expansion ,crustace ,arthropode ,PEST INSECT ,HUMAN ACTIVITY ,MITE ,MYRIAPOD ,SPIDER ,BIOGEOGRAPHY ,BIOLOGICAL INVASION ,TAXONOMY ,ASIA ,INSECTE ,ARANEA ,ESPECE EXOTIQUE INVASIVE ,BIOGEOGRAPHIE ,araignée ,asie ,crustacea ,psocoptera ,myriapoda ,activité humaine ,blattodea ,invasion biologique ,hymenoptera ,lepidoptera ,acarien ,europe ,thysanoptera - Abstract
International audience; A total of 1590 species of arthropods alien to Europe have already established on the continent, including 226 more or less cosmopolitan species of uncertain origin (cryptogenic). Th ese alien species are dispersed across 33 taxonomic orders, including crustaceans, chilopods, diplopods, pauropods, Symphyla, mites,arachnids, and insects. However, insects largely dominate, accounting for more than 87% of the species, far in excess of mites (6.4%). Th ree of the insect orders, namely Coleoptera, Hemiptera and Hymenoptera,overall account for nearly 65 % of the total. Th e alien fauna seems to be highly diverse with a total of 257 families involved, of which 30 have no native representatives. However, just 11 families contribute more than 30 species, mainly aphids, scales and hymenopteran chalcids. For a number of families, the arrival of alien species has signifi cantly modifi ed the composition of the fauna in Europe. Examples are given. Th e number of new records of aliens per year has increased exponentially since the 16th century, but a signifi cant acceleration was observed since the second half of the 20th century, with an average of 19.6 alien species newly reported per year in Europe between 2000 and 2008. Th is acceleration appears to be mainly related to the arrival of phytophagous species, probably with the plant trade, whereas the contribution of detritivores, parasitoids and predators has decreased. Some taxa have not shown any acceleration in the rate of arrivals. Asia has supplied the largest number of alien arthropods occurring in Europe (26.7 %), followed by North America (21.9%) but large diff erences in the region of origin are apparent between taxa. Once established, most alien species have not spread throughout Europe, at least yet, with 43.6 % of the species only present in one or two countries, and less than 1% present in more than 40 countries.Large diff erences also exist between European countries in the total number of alien arthropods recorded per country. Italy (700 species) and France (690 species), followed by Great Britain (533 species), host many more species than other countries. Th e number of alien species per country is signifi cantly correlated with socioeconomic and demographic variables.
- Published
- 2010
37. Crevettes d'eau douce en aquariophilie : exemple de maintenance de la neocaridina heteropoda pour les débutants
- Author
-
Barbier, Cécile and Ecole Nationale Vétérinaire de Toulouse - ENVT (FRANCE)
- Subjects
Crustacé ,Médecine vétérinaire et santé animal ,Aquariophilie ,Neocaridina heteropoda ,Crevette ,Arthropode - Abstract
Ce document regroupe de nombreuses données sur les crevettes d’eau douce. Après avoir abordé la question de la phylogénie afin de mieux appréhender la place des crustacés au sein du règne animal, l’auteur aborde leur anatomie et leur physiologie. Ainsi, le lecteur trouvera les informations nécessaires à la compréhension du fonctionnement des organes de la vie de relation, de nutrition ou de la reproduction des crevettes. L’auteur explique également comment mettre en place et entretenir un aquarium de crevettes tant au niveau des paramètres techniques importants à maîtriser que concernant le choix et l’accueil des nouveaux arrivants. Une place importante sera consacrée aux pathologies rencontrées chez les espèces maintenues en aquarium. L’auteur traite enfin de la maintenance d’une espèce robuste de crevette qu’est la Neocaridina heteropoda : approche de ses origines, des détails microscopiques de reconnaissance, des caractéristiques physiologiques et de sa place actuelle au sein de l’aquariophilie. Ce document sera à la fois une présentation utile pour l’aquariophile débutant ainsi qu’un outil précieux pour l’amateur aguerri souhaitant parfaire ses connaissances.
- Published
- 2010
38. Guide de diversification des activités de pêche et de conchyliculture en Bretagne
- Author
-
Lesueur, Marie, Henichart, Laura-Mars, Besse, Thimothée, Boude, Jean-Pierre, Folliard, Gervais, Merrien, Violaine, and Ropars-Collet, Carole
- Subjects
Economies et finances ,conchyliculture ,Economies and finances ,bretagne ,poisson ,crustace ,pêche ,europe ,france - Abstract
La diversification des activités peut être définie comme la pratique d’activités complémentaires à la production, en lien avec le produit, le métier ou la structure d’exploitation. La diversification exprime le choix pour une exploitation d’exercer, sous le statut de pêcheur ou de conchyliculteur, les activités classiques de capture ou d’élevage en même temps que d’autres activités qui sont dans le prolongement de cet acte de production ou qui ont pour support l’exploitation. L’objectif de ce guide est de donner des informations sur les principales activités de diversification existantes ou envisageables actuellement pour les activités de pêche et de conchyliculture. Ce guide est issu d’un travail d’enquêtes et d’entretiens auprès des pêcheurs, des conchyliculteurs et des structures d’encadrement du secteur halieutique en Bretagne. Ce travail a été encadré par un comité de pilotage composé de membres d’AGROCAMPUS OUEST, de services de la Région Bretagne, ainsi que de responsables des structures professionnelles de la pêche et de la conchyliculture (représentants des Comités locaux des pêches maritimes et des élevages marins d’Audierne, du Guilvinec et de Saint-Brieuc et des Comités régionaux de la conchyliculture de Bretagne Sud et de Bretagne Nord).
- Published
- 2010
39. Crustacés de la Réunion : décapodes et stomatopodes
- Author
-
Poupin, J.
- Subjects
MILIEU SAUMATRE ,BIODIVERSITE ,CRUSTACE ,ANATOMIE ANIMALE ,INVENTAIRE FAUNISTIQUE ,LITTORAL ,ETHOLOGIE ,DIVERSITE SPECIFIQUE ,DISTRIBUTION SPATIALE ,ASSOCIATION D'ESPECES ,EAU DOUCE ,ZONE BATHYPELAGIQUE - Published
- 2009
40. Effects of spinosad and Bacillus thuringiensis israelensis on a natural population of Daphnia pulex in field microcosms
- Author
-
Claire Duchet, Christophe Lagneau, Th. Caquet, Michel Larroque, Evelyne Franquet, Laurent Lagadic, Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Entente Interdépartementale pour la Démoustication du Littoral Méditerranéen, Démarche intégrée pour l'obtention d'aliments de qualité (UMR Qualisud), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut Méditerranéen d'Ecologie et de Paléoécologie (IMEP), Université Paul Cézanne - Aix-Marseille 3-Centre National de la Recherche Scientifique (CNRS)-Avignon Université (AU)-Université de Provence - Aix-Marseille 1, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Université de La Réunion (UR)-Université de Montpellier (UM)-Avignon Université (AU)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université Montpellier 1 (UM1), and Université Paul Cézanne - Aix-Marseille 3-Université de Provence - Aix-Marseille 1-Avignon Université (AU)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
0106 biological sciences ,Insecticides ,EVALUATION DU RISQUE ,Health, Toxicology and Mutagenesis ,LUTTE ANTI-VECTORIELLE ,Spinosad ,010501 environmental sciences ,01 natural sciences ,Population density ,IN SITU MICROCOSM ,Toxicology ,CINETIQUE DE DEGRADATION ,bactérie ,education.field_of_study ,biology ,DISSIPATION KINETICS ,General Medicine ,Bacillus thuringiensis israelensis ,crustacea ,bacterium ,Pollution ,bacillus thuringiensis ,Drug Combinations ,MICROCOSME IN SITU ,Macrolides ,Microcosm ,medicine.drug ,Environmental Engineering ,[SDE.MCG]Environmental Sciences/Global Changes ,Population ,ECOLOGICAL RISK ASSESSMENT ,Daphnia pulex ,Host-Parasite Interactions ,Animal science ,medicine ,Environmental Chemistry ,Animals ,crustace ,education ,Larvicide ,Ecosystem ,0105 earth and related environmental sciences ,Population Density ,CONTROLE ANTIMOUSTIQUE ,Dose-Response Relationship, Drug ,Public Health, Environmental and Occupational Health ,General Chemistry ,biology.organism_classification ,biopesticide ,010602 entomology ,Pulex ,Daphnia ,LARVICIDE - Abstract
Spinosad, a candidate biological larvicide for mosquito control, was evaluated for its effects on a field population of Daphnia pulex, using Bacillus thuringiensis serovar israelensis (Bti) as a reference larvicide. Microcosms (125L enclosures) were placed in a shallow temporary oligohaline marsh where D. pulex was present. Three concentrations of spinosad (8, 17 and 33 microg L(-1)) and two concentrations of Bti (0.16 and 0.50 microL L(-1)) were applied (5 replicates per concentration, including the controls). Effects of larvicides on D. pulex were evaluated after 2, 4, 7, 14 and 21d of exposure, through measurements of abundance and individual size. Dissipation of spinosad from the water phase was rapid. Four days after treatment, residue concentration represented 11.8%, 3.9% and 12.7% of the initial exposure level for the nominal concentrations of 8, 17 and 33 microg L(-1), respectively. Spinosyns A and D dissipated at similar rates. Analysis of abundance and size structure of the D. pulex population showed an impact of spinosad. Both survival and size structure were affected. However, at the lowest concentration (8 microg L(-1)), population recovered after the first week. In microcosms treated with Bti, the abundance of D. pulex was not affected but the size structure of the population changed after 21d. As compared to laboratory tests, the use of in situ microcosms improved the environmental risk assessment of larvicides, taking into account the influence of environmental factors (e.g., temperature, light, salinity) and intrinsic capacity of recovery of D. pulex under field conditions.
- Published
- 2008
41. Galatheoidea of New Caledonia and environs: Remarks on the preliminary checklist
- Author
-
Macpherson, Enrique, Baba, Keiji, Payri, Claude (ed.), Richer de Forges, Bertrand (ed.), and Colin, Fabrice (préf.)
- Subjects
RECIF CORALLIEN ,MILIEU MARIN ,CRUSTACE ,education ,CRABE ,INVENTAIRE FAUNISTIQUE ,INVERTEBRE AQUATIQUE ,DIVERSITE SPECIFIQUE - Published
- 2007
42. Apolipocrustacein, formerly vitellogenin, is the major egg yolk precursor protein in decapod crustaceans and is homologous to insect apolipophorin II/I and vertebrate apolipoprotein B
- Author
-
Patrick J. Babin, Jean-Christophe Avarre, Esther Lubzens, Israel Oceanographic and Limnological Research, École polytechnique (X), Nutrition, Aquaculture et Génomique (NUAGE), and Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
- Subjects
food.ingredient ,Evolution ,Protein subunit ,Biodiversité et Ecologie ,Conserved sequence ,Biodiversity and Ecology ,03 medical and health sciences ,Vitellogenin ,Vitellogenins ,0302 clinical medicine ,food ,Phylogenetics ,Yolk ,Decapoda ,QH359-425 ,Animals ,crustace ,Protein Precursors ,VITELLOGENIN ,APOLIPOCRUSTACEIN ,GENOMIQUE ,Ecology, Evolution, Behavior and Systematics ,Phylogeny ,ComputingMilieux_MISCELLANEOUS ,030304 developmental biology ,Apolipoproteins B ,Genetics ,0303 health sciences ,physiologie animale ,lipoprotéine ,biology ,Sequence Homology, Amino Acid ,crustacea ,Apolipoproteins ,biology.protein ,Subfunctionalization ,Neofunctionalization ,Domain of unknown function ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Carrier Proteins ,030217 neurology & neurosurgery ,Research Article - Abstract
Background In animals, the biogenesis of some lipoprotein classes requires members of the ancient large lipid transfer protein (LLTP) superfamily, including the cytosolic large subunit of microsomal triglyceride transfer protein (MTP), vertebrate apolipoprotein B (apoB), vitellogenin (Vtg), and insect apolipophorin II/I precursor (apoLp-II/I). In most oviparous species, Vtg, a large glycolipoprotein, is the main egg yolk precursor protein. Results This report clarifies the phylogenetic relationships of LLTP superfamily members and classifies them into three families and their related subfamilies. This means that the generic term Vtg is no longer a functional term, but is rather based on phylogenetic/structural criteria. In addition, we determined that the main egg yolk precursor protein of decapod crustaceans show an overall greater sequence similarity with apoLp-II/I than other LLTP, including Vtgs. This close association is supported by the phylogenetic analysis, i.e. neighbor-joining, maximum likelihood and Bayesian inference methods, of conserved sequence motifs and the presence of three common conserved domains: an N-terminal large lipid transfer module marker for LLTP, a DUF1081 domain of unknown function in their central region exclusively shared with apoLp-II/I and apoB, and a von Willebrand-factor type D domain at their C-terminal end. Additionally, they share a conserved functional subtilisin-like endoprotease cleavage site with apoLp-II/I, in a similar location. Conclusion The structural and phylogenetic data presented indicate that the major egg yolk precursor protein of decapod crustaceans is surprisingly closely related to insect apoLp-II/I and vertebrate apoB and should be known as apolipocrustacein (apoCr) rather than Vtg. These LLTP may arise from an ancient duplication event leading to paralogs of Vtg sequences. The presence of LLTP homologs in one genome may facilitate redundancy, e.g. involvement in lipid metabolism and as egg yolk precursor protein, and neofunctionalization and subfunctionalization, e.g. involvement in clotting cascade and immune response, of extracellular LLTP members. These protein-coding nuclear genes may be used to resolve phylogenetic relationships among the major arthropod groups, especially the Pancrustacea-major splits.
- Published
- 2007
43. Compendium of marine species from New Caledonia : second edition
- Author
-
Bruce, N.L., Payri, Claude (ed.), Richer de Forges, Bertrand (ed.), and Colin, Fabrice (pref.)
- Subjects
RECIF CORALLIEN ,MILIEU MARIN ,CRUSTACE ,INVENTAIRE FAUNISTIQUE ,INVERTEBRE AQUATIQUE ,DIVERSITE SPECIFIQUE ,EAU DOUCE - Published
- 2007
44. Compendium of marine species from New Caledonia : second edition
- Author
-
Maddocks, R.F., Payri, Claude (ed.), Richer de Forges, Bertrand (ed.), and Colin, Fabrice (pref.)
- Subjects
RECIF CORALLIEN ,MILIEU MARIN ,CRUSTACE ,INVENTAIRE FAUNISTIQUE ,INVERTEBRE AQUATIQUE ,TAXONOMIE - Published
- 2007
45. Compendium of marine species from New Caledonia
- Author
-
Kornicker, l., Payri, Claude (ed.), Richer de Forges, Bertrand (ed.), Colin, Fabrice (pref.), and Colin, Fabrice (préf.)
- Subjects
RECIF CORALLIEN ,MILIEU MARIN ,CRUSTACE ,INVENTAIRE FAUNISTIQUE ,INVERTEBRE AQUATIQUE ,DIVERSITE SPECIFIQUE - Published
- 2007
46. Compendium of marine species from New Caledonia
- Author
-
Boxshall, G.A., Huys, R., Payri, Claude (ed.), Richer de Forges, Bertrand (ed.), Colin, Fabrice (pref.), and Colin, Fabrice (préf.)
- Subjects
RECIF CORALLIEN ,MILIEU MARIN ,CRUSTACE ,INVENTAIRE FAUNISTIQUE ,INVERTEBRE AQUATIQUE ,DIVERSITE SPECIFIQUE - Published
- 2007
47. Compendium of marine species from New Caledonia : second edition
- Author
-
Chan, T.Y., Mitsuhashi, M., Payri, Claude (ed.), Richer de Forges, Bertrand (ed.), and Colin, Fabrice (pref.)
- Subjects
CREVETTE ,RECIF CORALLIEN ,MILIEU MARIN ,CRUSTACE ,HOMARD ,INVENTAIRE FAUNISTIQUE ,INVERTEBRE AQUATIQUE ,DIVERSITE SPECIFIQUE - Published
- 2007
48. PCB, PCDD/F and PBDE levels and profiles in crustaceans from the coastal waters of Brittany and Normandy (France)
- Author
-
A.-M. Le Guellec, Alain Abarnou, Véronique Loizeau, Nathalie Bodin, Xavier Philippon, D. Fraisse, and S. Defour
- Subjects
0106 biological sciences ,Polychlorinated Dibenzodioxins ,Polychlorinated dibenzodioxins ,CRUSTACE ,010501 environmental sciences ,Oceanography ,01 natural sciences ,chemistry.chemical_compound ,Polybrominated diphenyl ethers ,Decapoda ,LITTORAL ,PCBs ,Atlantic Ocean ,biology ,Ecology ,ANALYSE CHIMIQUE ,COMPOSE ORGANOCHLORE ,BIOACCUMULATION ,Pollution ,Polychlorinated Biphenyls ,CONTAMINATION ,METABOLISME ,Environmental chemistry ,Biological Assay ,POLLUTION CHIMIQUE ,France ,Environmental Monitoring ,PBDEs ,Polybrominated Biphenyls ,Aquatic Science ,Food safety ,POLLUTION MARINE ,PCDD/Fs ,Animals ,Seawater ,14. Life underwater ,0105 earth and related environmental sciences ,ACCUMULATION ,Benzofurans ,DIOXINE ,010604 marine biology & hydrobiology ,Decapod crustaceans ,ZONE COTIERE ,Mussel ,INVERTEBRE AQUATIQUE ,biology.organism_classification ,Bivalvia ,Crustacean ,chemistry ,13. Climate action ,Environmental science ,Bass ,Metabolisation ,Bay ,Bioindicator ,Water Pollutants, Chemical - Abstract
Polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were analysed in the muscle of various edible marine crustaceans (spider crab, edible crab, velvet swimming crab and Norway lobster) from the Brittany and Normandy coasts (France). The highest concentrations were measured in species collected from Antifer (Seine Bay). PCB and PBDE patterns in crustacean muscles were similar and independent of the geographical area with the predominance of the high chlorinated PCBs (CB 15 3, 138, 118 and 180), and of a few PBDE congeners (BDE47, BDE99, WE 100 and BDE28). Oppositely, dioxin contamination differed with site. The major component in crustaceans from the Seine Bay was 2378-TCDF, whereas specimens from cleaner areas had higher relative concentrations of OCDD. Finally, the comparison of the spider crab contaminant profiles to those measured in mussel and sea bass highlighted two different trends: decapod crustaceans possess relatively strong capacity to metabolise PCBs and PBDEs; however these species might be used as bioindicators for dioxin pollution monitoring in the marine coastal environment. (C) 2007 Elsevier Ltd. All rights reserved.
- Published
- 2006
49. Evaluation et gestion du risque lié à l'ingestion de produits de la mer contaminés par le cadmium
- Author
-
Verge, Grégoire and Ecole Nationale Vétérinaire de Toulouse - ENVT (FRANCE)
- Subjects
Risque alimentaire ,Crustacé ,Médecine vétérinaire et santé animal ,Gestion ,Mollusque ,Poisson ,Evaluation ,Cadmium ,Littoral français - Abstract
Après avoir présenté les différentes sources de pollution par le cadmium, l'auteur montre que les estuaires et les zones portuaires sont les localisations les plus polluées. La contamination des organismes est la plus grande dans les bivalves et les crustacés. Seule l'ingestion d huîtres présente un risque d intoxication chronique chez l'homme. Ce risque est en fait relativement faible et en diminution constante compte tenu des mesures règlementaires visant à limiter les rejets de cadmium dans l'environnement et les teneurs de ce toxique dans les produits alimentaires.
- Published
- 2006
50. Régulation de l’accès de la pêcherie de coquilles Saint-Jacques de la baie de Saint-Brieuc : Evolution et éléments de diagnostic
- Author
-
Fifas, Spyros, Guyader, Olivier, Ropars-Collet, Carole, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), AGROCAMPUS OUEST, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)
- Subjects
bretagne ,côte d'armor ,économie ,crustace ,resource management ,europe ,[SHS.ECO]Humanities and Social Sciences/Economics and Finance ,gestion des ressources ,france - Abstract
Evaluation SMART - Auteur hors unité au moment de la publication; Communication à l'Atelier international « Régulation de l’accès aux ressources marines vivantes dans la zone côtière : expériences internationales et perspectives pour la Bretagne », Institut Universitaire Européen de la Mer Technopôle Brest-Iroise.
- Published
- 2006
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