Search

Your search keyword '"Rocher C"' showing total 204 results
Start Over Author "Rocher C"
204 results on '"Rocher C"'

1. AEOLE- the game - A game to understand everything about the grasslands of the Massif Central

Author

Carrere, Pascal, Galliot, Jean-Noël, Perera, Suharshi, Le Henaff, P-M, Faure, P, Rocher, C, Colin, A, Chabalier, Clara, Unité Mixte de Recherche sur l'Ecosystème Prairial - UMR (UREP), VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université Clermont Auvergne (UCA), CONSERVATOIRE BOTANIQUE NATIONAL DU MASSIF CENTRAL CHAVANIAC LAFAYETTE, 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), Conservatoire Botanique National du Massif Central, Conservatoire Botanique National, Chambre d'Agriculture du Puy de Dôme (CA 63), Chambre Régionale d'Agriculture d'Occitanie (CRA Occitanie), COPAGE, and CHAMBRE D'AGRICULTURE DU CANTAL

Subjects
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

International audience; An educational game is a form of transfer that relies on a strong involvement of the targeted actors in the knowledge dissemination process. AEOLE-the-game is one ofthe deliverables ofthe AEOLEproject, which aims to raise awareness among stakeholders to enable them to better understand the main types ofgrasslands in the Massif Central. It is about "experiencing at first hand" the diversity of the types ofgrasslands and their interests in front ofexternal events, byplaying in particular various climatic or socio-economic scenarios. It helps to raise awareness of the impact of management practices on the services provided by grasslands at the farm and territorial levels. AEOLE -the-game is a collaborative game, each player incarnating a farmer belonging to the same territory that he has to develop in a sustainable way (with predetermined objectives to reach). Each ofthe 4 players will thus have to lead and maintain his farm by mobilizing individual choice criteria and concomitantly, maintain or develop a territory by jointly reasoning the 3 pillars of sustainable development. On this last point, the interactions between players will allow discussion and the emergence ofcollective decisions. By becoming an actor, the player becomes aware ofthe impact ofhis practices and decisions on the services provided by the grasslands, both on the farm and on the territory.

Published
2021

3. ASigNTF: Agnostic Signature using NTF – a universal agnostic strategy to estimate cell-types abundance from transcriptomic datasets

Author

Bettembourg C, Fogel P, Augé F, Boldina G, George Luta, and Rocher C

Subjects
Set (abstract data type), Computer science, business.industry, Dimensionality reduction, Pattern recognition, Deconvolution, Construct (python library), Artificial intelligence, business, Selection (genetic algorithm), Signature (logic)
Abstract

BackgroundMolecular signatures for deconvolution of immune cell types have been proposed, based on a methodology that relies on the biological classification of the cell types being studied. When working with less known biological material, a data-driven approach is needed to uncover the underlying classes and construct ad hoc signatures.ResultsWe introduce a new approach, ASigNTF: Agnostic Signature using Non-negative Tensor Factorization, to perform the deconvolution of cell types from transcriptomics data (RNAseq and microarray). ASigNTF, which is based on two complementary statistical/mathematical tools: non-negative tensor factorization (for dimensionality reduction) and the Herfindahl-Hirschman index (for signature selection), can be applied to any type of tissue as long as transcriptomic data on isolated cells is available. As a direct result of the new method, we propose two new signatures for the deconvolution of immune cell types, one consisting of a relatively small set of 415 genes, which is more compatible with microarray platforms, and a larger set of 915 genes. Using external datasets, our two signatures outperform the CIBERSORT LM22 signature in deconvolution of RNA-seq data. Our signature with 415 genes allows to recognize a larger number of cell types compared to the ABIS microarray signature.ConclusionsThe paper proposes a new method, ASigNTF; applies the method, and also provides a software implementation that allows to identify molecular signatures for deconvolution of complex tissues and specifically up to 16 immune cell types from micro-array or RNA-seq data.HighlightsSeveral signatures of immune cell types have been proposed, which follow a methodology deeply rooted in the known biological classification of the investigated cell types.When working with less known biological material, a more agnostic, data-driven approach is required to uncover the underlying classes and construct ad hoc signatures.We present ASigNTF, a new agnostic approach to cell type classification and signature selection supported by an application software.We discuss the results of benchmarking our proposed signatures, ABIS-seq and CIBERSORT on external datasets.

Published
2021
Full Text
View/download PDF

6. Physiological diversity of mitochondrial oxidative phosphorylation

Author

Benard, G., Faustin, B., Passerieux, E., Galinier, A., Rocher, C., Bellance, N., Delage, J.-P., Casteilla, L., Letellier, T., and Rossignol, R.

Subjects
Oxidative phosphorylation -- Research, Cytochrome c -- Research, Stoichiometry -- Research, Biological sciences
Abstract

To investigate the physiological diversity in the regulation and control of mitochondrial oxidative phosphorylation, we determined the composition and functional features of the respiratory chain in muscle, heart, liver, kidney, and brain. First, we observed important variations in mitochondrial content and infrastructure via electron micrographs of the different tissue sections. Analyses of respiratory chain enzyme content by Western blot also showed large differences between tissues, in good correlation with the expression level of mitochondrial transcription factor A and the activity of citrate synthase. On the isolated mitochondria, we observed a conserved molar ratio between the respiratory chain complexes and a variable stoichiometry for coenzyme Q and cytochrome c, with typical values of [1-1.5]:[30-135]:[3]:[9-35]:[6.5-7.5] for complex II:coenzyme Q: complex III: cytochrome c:complex IV in the different tissues. The functional analysis revealed important differences in maximal velocities of respiratory chain complexes, with higher values in heart. However, calculation of the catalytic constants showed that brain contained the more active enzyme complexes. Hence, our study demonstrates that, in tissues, oxidative phosphorylation capacity is highly variable and diverse, as determined by different combinations of 1) the mitochondrial content, 2) the amount of respiratory chain complexes, and 3) their intrinsic activity. In all tissues, there was a large excess of enzyme capacity and intermediate substrate concentration, compared with what is required for state 3 respiration. To conclude, we submitted our data to a principal component analysis that revealed three groups of tissues: muscle and heart, brain, and liver and kidney. respiratory chain; tissues; stoichiometry; cytochrome c; coenzyme Q

Published
2006

9. Development of a cryogenic silicon cavity stabilized laser

Author

bourgeois, Pierre-Yves, Marechal, B., Tetsing Talla, D., Millo, J., Rocher, C., Bourgeois, P.Y., Goavec-Merou, G., Lacroute, C., Rubiola, E., Kersalé, Y., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.OTHER]Engineering Sciences [physics]/Other, Temperature control, Materials science, Silicon, Physics::Instrumentation and Detectors, business.industry, Physics::Optics, chemistry.chemical_element, Cryocooler, Laser, 01 natural sciences, Temperature measurement, Thermal expansion, law.invention, 010309 optics, Vibration, chemistry, law, 0103 physical sciences, Thermal, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, 010306 general physics, business, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; In this paper, we present the current development status of a cavity stabilized laser at 1550 nm. The expected thermal noise limit of the silicon Fabry-Perot cavity is $3\times 10^{-17}$ at 17 K in terms of fractional frequency instability. We cooled it to its thermal expansion turning point, measured at 18.1 K, with a pulse-tube based cryocooler. Thanks to the thermal filtering and the temperature control of the cavity, the temperature induced fractional frequency instability is below the thermal noise up to 1000 s of integration time. We also discuss the vibration induced limitations, the thermal characterization of the cryocooler and the digital servo implementation and performances.

Published
2018
Full Text
View/download PDF

14. Compact ultra-stable laser

Author

Didier, A., primary, Millo, J., additional, Marechal, B., additional, Rocher, C., additional, Lacroute, C., additional, Ouisse, M., additional, Rubiola, E., additional, and Kersale, Y., additional

Published
2017
Full Text
View/download PDF

16. Biological Effects of Millimeter-Wave Irradiation on Mice--Preliminary Results

Author

Bellossi, A., Dubost, G., Moulinoux, J. P., Himdi, M., Ruelloux, M., and Rocher, C.

Subjects
Microwaves -- Physiological aspects, Electromagnetic radiation -- Physiological aspects, Business, Computers, Electronics, Electronics and electrical industries
Abstract

Millimeter waves at 60 GHz are suitable for discreet radio contact in a restricted area, especially for indoor high-rate communications. Such wave exposures have not been reported. That is the reason why a study of possible biological effects upon living beings was required. An experimental irradiation device was calibrated and used to irradiate mice. Specific absorption rate and internal fields have been computed for a mouse irradiated at 60 GHz. The measured power flux in free space at the irradiation area is close to 0.5 mW/[cm.sup.2], this probably produces some subtle biological effects. To look for possible biological effects, we exposed DBA2 mice grafted either with L1210 cells or with Lewis tumor cells and healthy Swiss mice. There were four obvious observations: there is an individual sensitiveness to 60 GHz waves; the survival of mice grafted with L1210 cells could be increased; the growth of Lewis tumor was enhanced; and the activity of Swiss mice was increased. In any way, those effects have to be taken into account, and we suggest prudence before using a 60-GHz wave for indoor communications. Index Terms--Biological effects of electromagnetic radiations.

Published
2000

17. Effects of repeated systemic administration of d -Fenfluramine on serotonin and glutamate release in rat ventral hippocampus: comparison with methamphetamine using in vivo microdialysis

Author

Rocher C and Alain M. Gardier

Subjects
Male, Agonist, Serotonin, Microdialysis, medicine.drug_class, Fenfluramine, Glutamic Acid, Pharmacology, Serotonergic, Hippocampus, Methamphetamine, Rats, Sprague-Dawley, chemistry.chemical_compound, Serotonin Agents, In vivo, medicine, Animals, Sympathomimetics, Chromatography, High Pressure Liquid, Dose-Response Relationship, Drug, General Medicine, Meth, Rats, chemistry, Anesthesia, Systemic administration, medicine.drug
Abstract

We compared the effects of three systemic injections of various doses of d-Fenfluramine, an indirect serotonergic agonist (1.3, 5 or 10 mg/kg), to those of a known neurotoxin, methamphetamine (METH, at a 7.5 mg/kg dose), given i.p. at 2-h intervals, simultaneously on extracellular levels of glutamate [Gluext] and 5-HT [5-HText] in the ventral hippocampus (VHPC) using in vivo microdialysis in conscious rats. METH markedly increased both [Gluext] (+77% over the control value in saline-treated rats) and [5-HText] (around +250% over controls) in the VHPC. d-Fenfluramine, at all the doses studied, induced gradual increases of [5-HText] in the VHPC (between +125% and +417% over control values), but did not modify [Gluext]. These data highlight marked in vivo differences between METH and d-Fenfluramine in their effects on extracellular levels of 5-HT and Glu in the rat ventral hippocampus following their repeated systemic administration.

Published
2001
Full Text
View/download PDF

18. [Trypanosoma cruzi: trypomastigote forms in pleural fluid of a patient with AIDS]

Author

Claudia, Menghi R, Claudia, Gatta de N, Anabela, Angeleri G, Adriana, Rocher C, and Luis, Palaoro I

Subjects
Male, Pleural Effusion, Fatal Outcome, AIDS-Related Opportunistic Infections, Trypanosoma cruzi, Humans, Chagas Disease, Middle Aged
Abstract

The presence of numerous trypomastigote forms of Trypanosoma cruzi in the pleural fluid of a patient with AIDS from Santiago del Estero, Argentina, was detected. Chagas disease is endemic in some countries of Latin America. To our knowledge, the finding of trypomastigote forms of T. cruzi in the pleural fluid has not yet been described in the literature.

Published
2012

19. Trypanosoma cruzi: tripomastigotes en líquido pleural de un paciente con SIDA

Author

Menghi R, Claudia, Gatta de N, Claudia, Angeleri G, Anabela, Rocher C, Adriana, and Palaoro I, Luis

Subjects
líquido pleural, SIDA, Trypanosoma cruzi, Argentina
Abstract

Se detectó la presencia de numerosos tripomastigotes de Trypanosoma cruzi en el líquido pleural de un paciente con SIDA proveniente de Santiago del Estero, Argentina. La enfermedad de Chagas es endémica en algunos países de América Latina. Según nuestro conocimiento el hallazgo de tripomastigotes de T. cruzi en el líquido pleural no ha sido previamente descrito en la literatura médica. The presence of numerous trypomastigote forms of Trypanosoma cruzi in the pleural fluid of a patient with AIDS from Santiago del Estero, Agentina, was detected. Chagas disease is endemic in some countries of Latin America. To our knowledge, the finding of trypomastigote forms of T. cruzi in the pleural fluid has not yet been described in the literature.

Published
2011

20. Latest developments in ultra-stable microwave oscillators at FEMTO-ST Institute

Author

Giordano, V., Gruson, Y., Boubekeur, N., Rodolphe Boudot, Benmessaï, K., Sylvaine Cordier, Rocher, C., Bazin, N., Rubiola, E., Bourgeois, P. Y., Kersalé, Y., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2006

21. Stabilisation en température de résonateurs saphir pour oscillateurs micro-ondes

Author

Rodolphe Boudot, Rocher, C., Bazin, N., Petrini, V., Giordano, V., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Published
2005

22. High-precision temperature regulation for sapphire resonator in microwave oscillator

Author

Rodolphe Boudot, Rocher, C., Bazin, N., Galliou, S., Giordano, V., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), and Kersalé, Yann

Published
2005

23. Temperature regulated sapphire resonators for low phase noise oscillators

Author

Rodolphe Boudot, Rocher, C., Bazin, N., Galliou, S., Giordano, V., Olivier Llopis, Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université Fédérale Toulouse Midi-Pyrénées

Published
2005

24. Oscillateur à correction interférométrique

Author

Gruson, Y., Kersalé, Y., Rubiola, E., Rocher, C., Chaubet, M., Giordano, V., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), and Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
[SPI.OTHER]Engineering Sciences [physics]/Other
Published
2003

25. Trypanosoma cruzi: tripomastigotes en líquido pleural de un paciente con SIDA

Author

Anabela Angeleri G, Claudia Gatta de N, Adriana Esther Rocher C., Claudia Menghi R, and Luis Alberto Palaoro I.

Subjects
Gynecology, Chagas disease, medicine.medical_specialty, líquido pleural, biology, SIDA, business.industry, Trypanosoma cruzi, INT, Argentina, Public Health, Environmental and Occupational Health, biology.organism_classification, medicine.disease, Sindrome de, Infectious Diseases, Hum, Medicine, In patient, business, Sida, Skin lesion
Abstract

Resumen Se detecto la presencia de numerosos tripomastigotes de Trypanosoma cruzi en el liquido pleural de un paciente con SIDA proveniente de Santiago del Estero, Argentina. La enfermedad de Chagas es endemica en algunos paises de America Latina. Segun nuestro conocimiento el hallazgo de tripomastigotes de T. cruzi en el liquido pleural no ha sido previamente descrito en la literatura medica. Referencias 1.- Del Castillo M, Mendoza G, Oviedo J, Perez Blanco R P, Anselmo A E, Silva A M. AIDS and Chagas disease with central nervous system tumor-like lesion. Am J Med 1990; 88: 693-4.2.- Rocha A, Oliveira de Meneses A C, Moreira da Silva A, Ferreira M S, Nishioka S A, Burgarelli M K N, et al. Pathology of patients with Chagas disease and acquired immunodefi ciency syndrome. Am J Trop Med Hyg 1994; 50: 261-8.3.- Lopez M O. Meningoencefalitis chagasica en un paciente con infeccion por VIH/SIDA con sobrevida a tres anos: Caso clinico. Rev Chil Infectol 2010; 27: 160-4.4.- Iliovich E, Lopez R, Kum M, Uzandizaga G. Peritonitis espontanea chagasi-ca en un enfermo de SIDA. Medicina (Buenos Aires) 1998; 58: 507-8.5.- Ferreira M S, Nishioka S de A, Silvestre M T A, Borges A S, Nunes Araujo F R, Rocha A, et al. Reactivation of Chagas disease in patients with AIDS: report of three new cases and review of the literature. Clin Infect Dis 1997; 25: 1397-400.6.- Corti M. Enfermedad de Chagas y sindrome de inmunodefi ciencia adquirida. Enf Emerg 2003; 5: 13-7.7.- Sartori A M, Sotto M N, Braz L M, Oliveira Junior Oda C, Patzina R A, Barone A A, et al. Reactivation of Chagas disease manifested by skin lesions in a patient with AIDS. Trans R Soc Trop Med Hyg 1999; 93: 631-2.8.- Concetti H, Retegui M, Perez G, Perez H. Chagas’ disease of the cervix uteri in a patient with acquired immunodefi ciency syndrome. Hum Pathol 2000; 31: 120-2.9.- Cordova E, Boschi A, Ambrosioni J, Cudos C, Corti M. Reactivation of Chagas disease with central nervous system involvement in HIV-infected patients in Argentina, 1992-2007. Int J Infect Dis 2008; 12: 587-92.Figura 2. Tripomastigotes de

Published
2011
Full Text
View/download PDF

26. Projet de référence micro-onde à cavité vitrocéramique

Author

Vallet, O., Gruson, Y., Kersalé, Y., Rocher, C., Berthelot, P., Rubiola, E., Giordano, V., Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.OTHER]Engineering Sciences [physics]/Other
Published
2001

27. Préventions des effets biologiques des ondes millimétriques aux fréquences 28, 38, 60, 77 et 90 à 110 GHz : Premiers résultats d'irradiation de souris à la fréquence de 60 GHz

Author

Bellossi, André, Ruelloux, M, Rocher, C., Moulinoux, J.P., Dubost, Gérard, Himdi, Mohamed, Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2000

28. Phylogeography of the red coral (Corallium rubrum): inferences on the evolutionary history of a temperate gorgonian

Author

Aurelle, Didier, Ledoux, J. B., Rocher, C., Borsa, P., Chenuil, A., Féral, J.P., Aurelle, Didier, Ledoux, J. B., Rocher, C., Borsa, P., Chenuil, A., and Féral, J.P.

Abstract

The red coral Corallium rubrum (Cnidaria, Octocorallia) is an exploited, long-lived sessile species from the Mediterranean Sea and the adjacent coastline in the Atlantic Ocean. Surveys of genetic variation using microsatellites have shown that populations of C. rubrum are characterized by strong differentiation at the local scale but a study of the phylogeography of this species was still lacking. Here, we used seven polymorphic microsatellite loci, together with sequence data from an intron of the elongation factor 1 (EF1) gene, to investigate the genetic structure of C. rubrum across its geographical range in the western Mediterranean Sea and in the Adriatic Sea. The EF1 sequences were also used to analyse the consequences of demographic fluctuations linked with past environmental change. Clustering analysis with microsatellite loci highlighted three to seven genetic groups with the distinction of North African and Adriatic populations; this distinction appeared significant with AMOVA and differentiation tests. Microsatellite and EF1 data extended the isolation by distance pattern previously observed for this species at the western Mediterranean scale. EF1 sequences confirmed the genetic differentiation observed between most samples with microsatellites. A statistical parsimony network of EF1 haplotypes provided no evidence of high sequence divergence among regions, suggesting no long-term isolation. Selective neutrality tests on microsatellites and EF1 were not significant but should be interpreted with caution in the case of EF1 because of the low sample sizes for this locus. Our results suggest that recent Quaternary environmental fluctuations had a limited impact on the genetic structure of C. rubrum

Published
2011

30. La gestion sociale urbaine dans les pays en développement : rapport de fin de recherche mai 1993

Author

Osmont, O., Garcia-Oriol, G., Ghorayeb, M., Jaglin, S., and Rocher, C.

Subjects
SOCIETE URBAINE, DECENTRALISATION, POUVOIR LOCAL, FONCIER URBAIN, PRATIQUE SOCIALE, POLITIQUE URBAINE, PAUVRETE, SERVICES URBAINS, EQUIPEMENT, RAPPORTS SOCIAUX, POLITIQUE SOCIALE, GESTION URBAINE, MUNICIPALITE, REGULARISATION FONCIERE, DEMOCRATISATION
Abstract

Les réflexions proposées ici représentent une étape dans une recherche menée par une équipe du laboratoire TMU sur le thème de "la gestion sociale urbaine dans les pays en développement" ; elle privilégie dans le champ global de la gestion urbaine la dimension sociale, en la considérant comme mécanisme de régulation des rapports sociaux urbains, et comme système de contrôle des populations urbaines. La recherche s'appuie sur l'observation et l'analyse des pratiques des gestionnaires et de celles des citadins, à partir de deux entrées : la régularisation foncière, technique de gestion du sol urbain, mais aussi mode de régulation des rapports sociaux en ville, et la gestion urbaine partagée des services urbains. C'est autour de ces deux axes que s'est tenue une journée de réflexion en mai 1992, qui a permis de mieux cerner les possibilitiés et les limites de la gestion sociale urbaine à son niveau le plus approprié, celui des collectivités territoriales locales. (Résumé d'auteur)

Published
1993

Catalog

Books, media, physical & digital resources
See catalog results