Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11012
Tipo do documento: Artigo
Título: Body size, extinction risk and knowledge bias in new world snakes
Autor: Vilela, Bruno
Villalobos, Fabricio
Rodríguez, Miguel Ángel
Terribile, Levi Carina
Abstract: Extinction risk and body size have been found to be related in various vertebrate groups, with larger species being more at risk than smaller ones. We checked whether this was also the case for snakes by investigating extinction risk–body size relationships in the New World’s Colubroidea species. We used the IUCN Red List risk categories to assign each species to one of two broad levels of threat (Threatened and Non-Threatened) or to identify it as either Data Deficient or NotEvaluated by the IUCN. We also included the year of description of each species in our analysis as this could affect the level of threat assigned to it (earlier described species had more time to gather information about them, which might have facilitated their evaluation). Also, species detectability could be a function of body size, with larger species tending to be described earlier, which could have an impact in extinction risk–body size relationships. We found a negative relationship between body size and description year, with large-bodied species being described earlier. Description year also varied among risk categories, with Non-Threatened species being described earlier than Threatened species and both species groups earlier than Data Deficient species. On average, Data Deficient species also presented smaller body sizes, while no size differences were detected between Threatened and Non-Threatened species. So it seems that smaller body sizes are related with species detectability, thus potentially affecting both when a species is described (smaller species tend to be described more recently) as well as the amount of information gathered about it (Data Deficient species tend to be smaller). Our data also indicated that if Data Deficient species were to be categorized as Threatened in the future, snake body size and extinction risk would be negatively related, contrasting with the opposite pattern commonly observed in other vertebrate groups.
País: brasil
Programa: Programa de Pós-Graduação em Ecologia e Evolução
Citação: VILELA, Bruno; VILLALOBOS, Fabricio; RODRÍGUEZ, M. Á.; TERRIBILE, L. C. Body size, extinction risk and knowledge bias in new world snakes. Plos One, v. 9, p. 1-8, 2014. Disponível em: < http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0113429>.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1371/journal.pone.0113429
Identificador do documento: 10.1371/journal.pone.0113429
URI: http://repositorio.bc.ufg.br/handle/ri/11012
Data de publicação: 19-Nov-2014
Aparece nas coleções:ICB - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
Body Size, Extinction Risk and Knowledge Bias in New World snakes - 2014.pdf912,88 kBAdobe PDFThumbnail
Baixar/Abrir


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.