Data/hora: 02/06/2024 02:48:09

Provedor de dados: 	83	
País: 	Brazil	
Título: 	Feeding ecology of electric eel Electrophorus varii (Gymnotiformes: Gymnotidae) in the Curiaú River Basin, Eastern Amazon	
Autores: 	Mendes-Júnior,Raimundo Nonato Gomes; Sá-Oliveira,Júlio César; Vasconcelos,Huann Carllo Gentil; Costa-Campos,Carlos Eduardo; Araújo,Andrea Soares.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Amapá; Electric fish; Feeding Activity; Floodplain; Piscivory.	
Resumo: 	ABSTRACT In this study, the composition of the diet and the feeding activity of Electrophorus varii were evaluated. The influence of ontogeny and seasonality in these feeding parameters was also examined. Fish were collected in the Curiaú River Basin, Amazon, Brazil, from March 2005 to February 2006, during the rainy (January-June) and dry (July-December) seasons. Diet composition was characterized based on the analysis of stomach contents and feeding dynamics was assessed based on the Stomach Fullness Index (IR) calculated using stomach weight. Stomach content and RI data were grouped into four-cm size classes (40-80, 80-120, 120-160, and 160-200) and two seasonal periods (rainy and dry). The influence of ontogeny and seasonality in the diet was investigated through PERMANOVA, and in the food dynamics through ANOVA. The analysis of stomach contents revealed that fish were the most consumed preys by electric eels, especially Callichthyidae and Cichlidae. Diet composition and RI values of electric eels were not influenced by ontogeny and seasonality. Electric eels are fish predators, regardless of size class and seasonal period.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300202	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/1982-0224-2019-0132	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.18 n.3 2020	
Fonte: 	info:eu-repo/semantics/openAccess