Data/hora: 08/06/2024 11:29:51

Provedor de dados: 	83	
País: 	Brazil	
Título: 	Comparative analysis of the diet composition and its relation to morphological characteristics in Achirus mazatlanus and Syacium ovale (Pleuronectiformes: Osteichthyes) from a Mexican Pacific coastal lagoon	
Autores: 	Padilla-Gutierrez,Sandra Carolina; González-Sansón,Gaspar; Aguilar-Betancourt,Consuelo María; Flores-Ortega,Juan Ramón.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Estuarine habitat; Feeding; Ontogenic changes; Pleuronectiformes; Trophic morphology.	
Resumo: 	ABSTRACT The purpose of this research was to investigate differences in diet composition between Achirus mazatlanus and Syacium ovale, two flatfishes inhabiting in a tropical coastal lagoon and to investigate the relationship of their feeding habits to size, body morphometry and mouths characteristics. Fish were collected during sampling trips conducted regularly from 2011 to 2016 using several types of fishing gear. Total number of analyzed stomachs with some food content was 328 for Achirus mazatlanus from 1.4 to 21.3 cm total length (TL) and 203 for Syacium ovale with 1.3 to 24.0 cm TL. Results indicate that both species share a general diet based on benthic invertebrates and fishes but S. ovale has a more piscivorous habit, which can be explained by a more slender body shape and larger teeth, characteristics which increase prey fish catching performance. Important changes in composition of food categories related to size were not found for any species, but larger fish of both species eat larger ranges of prey sizes, and this ontogenetic change is consistent with recent developments on optimal foraging theory.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100206	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/110.1590/1982-0224-2019-0059	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.18 n.1 2020	
Fonte: 	info:eu-repo/semantics/openAccess