Data/hora: 01/06/2024 08:14:56

Provedor de dados: 	103	
País: 	Brazil	
Título: 	Ecomorphology of Astyanax species in streams with different substrates	
Autores: 	Souza,Marcela A.; Fagundes,Daniela C.; Leal,Cecília G.; Pompeu,Paulo S.	
Data: 	2014-02-01	
Ano: 	2014	
Palavras-chave: 	Convergence; Divergence; Ecomorphological attributes; Freshwater fish; Habitat diversity; Intraspecific differences.	
Resumo: 	In the present study, we assessed the ecomorphology of two species of Astyanax in streams with different substrates found in the Rio São Francisco Basin. The dominant substrate of each stream was defined as either "fine" (0 to 2 mm), "gravel" (2 to 250 mm), "rock" (&gt; 250 mm), or "leaf bank". We analyzed a total of 22 ecomorphological attributes of Astyanax intermedius Eigenmann, 1908 (127 individuals) and Astyanax rivularis (Lütken, 1875) (238 individuals) adults. We detected significant ecomorphological differences between the populations of A. rivularis and A. intermedius from habitats with different types of substrates. However, the two species did not show the same morphological differences depending on the type of substrate. These results confirmed the hypothesis that individuals from environments with different characteristics may have different ecomorphological patterns. Knowing that morphology is associated with habitat use and available resources, the loss of a resource or a modification in the environment may directly affect the permanence of a species, leading to a loss of morphologic diversity.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000100006	
Editor: 	Sociedade Brasileira de Zoologia	
Relação: 	10.1590/S1984-46702014000100006	
Formato: 	text/html	
Fonte: 	Zoologia (Curitiba)  v.31 n.1 2014	
Fonte: 	info:eu-repo/semantics/openAccess