Data/hora: 02/06/2024 17:47:11

Provedor de dados: 	83	
País: 	Brazil	
Título: 	Convergent responses of fish belonging to different feeding guilds to sewage pollution	
Autores: 	Prado,Marina Rodrigues do; Carvalho,Débora Reis de; Alves,Carlos Bernardo Mascarenhas; Moreira,Marcelo Zacharias; Pompeu,Paulo Santos.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Detritivorous; Hoplias intermedius; Hypostomus francisci; Piscivorous; Stable isotopes.	
Resumo: 	ABSTRACT This study aimed to evaluate if the presence of pollutants promotes changes in feeding habits of fish species from different trophic guilds: the detritivorous species, Hypostomus francisci, and the piscivorous, Hoplias intermedius. Both species were sampled at 12 sites (with different degrees of pollution) in the Rio das Velhas basin, which is heavily polluted by domestic and industrial sewage from the Metropolitan Region of Belo Horizonte (MRBH). Stable isotope analyses of carbon (δ13C) and nitrogen (δ15N) of fish tissue and the main food resources were performed. Fishes from both trophic guilds altered their diets in degraded environments, but the detritivorous species showed greater trophic plasticity. The isotopic niche of both trophic guilds was broadest in unpolluted sites and more δ15N enriched in polluted regions. The detritivorous species presented high niche-breadth in unpolluted sites, probably due to the greater variety of resources consumed. In addition, the δ15N of the detritivorous was more enriched than the piscivorous species in polluted sites. In conclusion, fishes from both trophic guilds presented similar isotopic responses to environmental pollution. However, the detritivorous species was more sensitive to these alterations and therefore, is likely a better indicator of environmental condition than the piscivorous.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100203	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/1982-0224-2019-0045	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.18 n.1 2020	
Fonte: 	info:eu-repo/semantics/openAccess