Data/hora: 13/06/2024 00:31:19

Provedor de dados: 	3	
País: 	Brazil	
Título: 	Trophic ecology of Loricariichthys melanocheilus Reis &amp; Pereira, 2000 (Siluriformes: Loricariidae) in Ibicuí river, southern Brazil	
Autores: 	Zardo, Éverton Luís; Behr, Everton Rodolfo.	
Data: 	2016-07-21	
Ano: 	2016	
Palavras-chave: 	Ciências biológicas; Ecologia feeding activity; Feeding habits; Intestinal quotient; Stomach fullness; Trophic spectrum Ecologia.	
Resumo: 	 Aiming to characterize aspects of the trophic ecology of Loricariichthys melanocheilus in the Ibicuí river, bimonthly samples were taken in lotic and lentic ecosystems. Fish were caught and fixed in 10% formalin and dissected for stomach content analysis. Items were identified to the lowest taxonomic level possible. Stomach fullness (SF), repletion index (RI) and intestinal quotient (IQ) were estimated. Diet was assessed by the frequency of occurrence and the volumetric method, combined to obtain a Alimentary index. Feeding activity was analyzed with mean values of SF, RI and vacuity index (VI), which represents the percentage of empty stomachs. These parameters were compared seasonally, spatially, and according to the circadian rhythm. The main items in the trophic spectrum of L. melanocheilus were detritus, sediment, plant organic matter, nematodes, micro crustaceans (Copepoda, Cladocera) and insects (Diptera, Trichoptera, Ephemeroptera and Odonata). No environmental or seasonal variations were found for the consumed items. Feeding activity showed seasonal and environmental variations according to RI but did not significantly change according to SF. The IQ was 1.51, and showed seasonal variations, indicating changes in the diet. 	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/26384

10.4025/actascibiolsci.v38i1.26384	
Editor: 	Universidade Estadual De Maringá	
Relação: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/26384/pdf	
Formato: 	application/pdf	
Fonte: 	Acta Scientiarum. Biological Sciences; v. 38, n. 1 (2016); 67-76

Acta Scientiarum. Biological Sciences; v. 38, n. 1 (2016); 67-76

1807-863X

1679-9283