Data/hora: 05/06/2024 04:02:46

Provedor de dados: 	103	
País: 	Brazil	
Título: 	The trophic niche of Mesoclemmys vanderhaegei (Testudines: Chelidae): evidence from stable isotopes	
Autores: 	Marques,Thiago S.; Brito,Elizângela S.; Lara,Neliton R.F.; Beloto,Luciana M.; Valadão,Rafael M.; Camargo,Plínio B. de; Verdade,Luciano M.	
Data: 	2017-01-01	
Ano: 	2017	
Palavras-chave: 	Anthropic environment; Freshwater turtle; Isotopic niche; Sexual niche.	
Resumo: 	ABSTRACT Ecological niche is the multidimensional space comprising the resources used by an organism. Intraspecific variation in resource exploitation is common in reptile populations to maximize coexistence of individuals. The use of stable isotope analysis is an effective tool when there are variations in resource exploitation, since it can provide quantitative information about food consumption and habitat use. Mesoclemmys vanderhaegei (Bour, 1973) is a medium-sized turtle with a limited distribution in south central Brazil and Paraguay. In spite of that, little is known about its ecology. In this study we used stable isotope analysis to understand the intraspecific trophic niche variation in M. vanderhaegei at Serra das Araras Ecological Station, state of Mato Grosso, Brazil. The isotopic ratios of δ15N and δ13C were determined in claw samples collected from 14 males and 14 females. Isotopic niche width values were not statistically different between the sexes, there was a high degree of overlap between sexual niches and there were no relationships between isotopic compositions and body size. These results suggest that individuals of both sexes and throughout their ontogenetic development exploit food resources with the same isotopic baseline.	
Tipo: 	Info:eu-repo/semantics/other	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100501	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.3897/zoologia.34.e19985	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.34 2017	
Fonte: 	info:eu-repo/semantics/openAccess