5 results on '"Cordeiro RT"'
Search Results
2. Modeling impacts of climate change on the potential habitat of an endangered Brazilian endemic coral: Discussion about deep sea refugia.
- Author
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de Oliveira UDR, Gomes PB, Silva Cordeiro RT, de Lima GV, and Pérez CD
- Subjects
- Animals, Area Under Curve, Brazil, Coral Reefs, Geography, Global Warming, Models, Theoretical, ROC Curve, Refugium, Anthozoa, Climate Change, Ecosystem, Endangered Species
- Abstract
Climate and environmental conditions are determinant for coral distribution and their very existence. When changes in such conditions occur, their effects on distribution can be predicted through species distribution models, anticipating suitable habitats for the subsistence of species. Mussismilia harttii is one of the most endangered Brazilian endemic reef-building corals, and in increasing risk of extinction. Herein, species distribution models were used to determine the present and future potential habitats for M. harttii. Estimations were made through the maximum entropy approach, predicting suitable habitat losses and gains by the end of the 21st century. For this purpose, species records published in the last 20 years and current and future environmental variables were correlated. The best models were chosen according to the Akaike information criterion (AIC) and evaluated through the partial ROC (AUCratio), a new approach which uses independent occurrence data. Both approaches showed that the models performed satisfactorily in predicting potential habitat areas for the species. Future projections were made using the International Panel on Climate Change (IPCC) scenarios for 2100, with different levels of greenhouse gas emission. Representative Concentration Pathways (RCPs) were used to model the Future Potential Habitat (FPH) of M. harttii in two different scenarios: stabilization of emissions (RCP 4.5) and increase of emissions (RCP 8.5). According to the results, shallow waters to the south of the study area concentrate most of the current potential habitats for the species. However, in future scenarios, there was a loss of suitable areas in relation to the Current Potential Habitat (RCP 4.5 46% and RCP 8.5 59%), whereas there is a southward shift of the suitable areas. In all scenarios of FPH, the temperature was the variable with the greatest contribution to the models (> 35%), followed by the current velocity (> 33%) and bathymetry (>29%). In contrast, there is an increase of deep (50-75 m) suitable areas FPH scenarios, mainly in the southern portion of its distribution, at Abrolhos Bank (off Espirito Santo State). These deeper sites might serve as refugia for the species in global warming scenarios. Coral communities at such depths would be less susceptible to impacts of climate change on temperature and salinity. However, the deep sea is not free from human impacts and measures to protect deeper ecosystems should be prioritized in environmental policies for Brazilian marine conservation, especially the Abrolhos Bank, due to its importance for M. harttii., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2019
- Full Text
- View/download PDF
3. Perceived childhood adversities: Impact of childhood trauma to estimated intellectual functioning of individuals with bipolar disorder.
- Author
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Martins DS, Hasse-Sousa M, Petry-Perin C, Arrial-Cordeiro RT, Rabelo-da-Ponte FD, Lima FM, Rosa AR, Bücker J, Gama CS, and Czepielewski LS
- Subjects
- Adult, Cognition, Female, Humans, Linear Models, Male, Middle Aged, Perception, Psychotic Disorders psychology, Surveys and Questionnaires, Adult Survivors of Child Abuse psychology, Bipolar Disorder psychology, Cognition Disorders psychology
- Abstract
Maltreatments in childhood may have implications for neurodevelopment that could remain throughout life. Childhood trauma seems to be associated with the onset of bipolar disorder (BD), and its occurrence might accentuate the overall disease impairments related to cognitive deficits in BD. We aimed to evaluate the effects of a history of childhood trauma to estimated intellectual functioning (IQ) of individuals with BD. We included 72 subjects with BD during euthymia. Participants underwent a clinical interview and were assessed through the Childhood Trauma Questionnaire (CTQ) and Wechsler Abbreviated Scale of Intelligence (WASI). Most prevalent trauma subtypes were emotional abuse and neglect (54.1%). A linear regression model that included perceived childhood trauma, family history of severe mental disorders, age at diagnosis and psychotic symptoms during the first episode as main factors showed that only childhood trauma had a significant effect in predicting estimated IQ. Therefore, the history of childhood trauma in individuals with BD may play a role in intellectual development, suggesting that adversities during development result in decreased general cognitive abilities. These results reinforce the need to promote early interventions to protect childhood and to promote the well-being of children, contributing to the growth of healthy adults., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
4. PRP8 intein in dermatophytes: Evolution and species identification.
- Author
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Garcia Garces H, Cordeiro RT, and Bagagli E
- Subjects
- Arthrodermataceae classification, Arthrodermataceae genetics, Base Sequence, DNA, Fungal genetics, Endonucleases genetics, Epidermophyton classification, Epidermophyton genetics, Fungi enzymology, Humans, Microsporum classification, Microsporum genetics, Polymerase Chain Reaction, Polymorphism, Genetic, Species Specificity, Trichophyton classification, Trichophyton genetics, Evolution, Molecular, Fungal Proteins genetics, Fungi classification, Fungi genetics, Inteins genetics, Phylogeny
- Abstract
Dermatophytes are keratinophilic fungi belonging to the family Arthrodermataceae. Despite having a monophyletic origin, its systematics has always been complex and controversial. Sequencing of nuclear ribosomal ITS and D1/D2 rDNA has been proposed as an efficient tool for identifying species in this group of fungi, while multilocus analyses have been used for phylogenetic species recognition. However, the search for new markers, with sequence and size variation, which enable species identification in only one polymerase chain reaction (PCR) step, is very attractive. Inteins seems to fulfill these characteristics. They are self-splicing genetic elements present within housekeeping coding genes, such as PRP8, that codify the most important protein of the spliceosome. The PRP8 intein has been described for Microsporum canis in databases but has not been studied in dermatophytes in any other published work. Thus, our aim was to determine the potential of this intervening element for establishing phylogenetic relationships among dermatophytes and for identifying species. It was found that all studied species have a full-length PRP8 intein with a Homing Endonuclease belonging to the family LAGLIDADG. Phylogenetic analyses were consistent with other previous phylogenies, confirming Epidermophyton floccosum in the same clade of the Arthroderma gypseum complex, Microsporum audouinii close to M. canis, differentiating A. gypseum from Arthroderma incurvatum, and in addition, better defining the Trichophyton interdigitale and Trichophyton rubrum species grouping. Length polymorphism in the HE region enables identification of the most relevant Microsporum species by a simple PCR-electrophoresis assay. Intein PRP8 within dermatophytes is a powerful additional tool for identifying and systematizing dermatophytes.
- Published
- 2018
- Full Text
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5. Deep-water octocorals (Cnidaria: Octocorallia) from Brazil: Family Chrysogorgiidae Verrill, 1883.
- Author
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Cordeiro RT, Castro CB, and Pérez CD
- Subjects
- Animal Distribution, Animal Structures anatomy & histology, Animal Structures growth & development, Animals, Anthozoa anatomy & histology, Anthozoa growth & development, Body Size, Brazil, Female, Male, Organ Size, Anthozoa classification
- Abstract
Current knowledge about the Brazilian deep-water octocoral fauna remains scarce, fragmented, and mostly based on unpublished, regional scale surveys. The present work provides the first comprehensive study of the family Chrysogorgidae Verrill, 1883 in Brazil, based on morphological analysis of specimens collected in the last decade and those currently placed in museums. Members of this family are common mainly at great depths and remarkable for the iridescent aspect of their colonies. In Brazil, to the present, only four species were reported: Chrysogorgia elegans (Verrill, 1883), Chrysogorgia multiflora Deichmann, 1936, Stephanogorgia rattoi Castro, Medeiros & Loiola, 2010 and Trichogorgia brasiliensis Castro, Medeiros & Loiola, 2010-the last two are shallow-water species. In this study, three new deep-water species are described, Chrysogorgia tuberculata, Chrysogorgia upsilonia and Radicipes kopelatos, and a new record to Brazil is reported, Chrysogorgia fewkesii Verrill, 1883, as well as latitudinal expansions in distributions of Chrysogorgia elegans and Chrysogorgia multiflora are presented.
- Published
- 2015
- Full Text
- View/download PDF
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