Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area

The feeding ecology of the planehead filefish, Stephanolepis hispidus, in waters of the Canary Islands was examined. The study was based on the stomach contents of 823 specimens, from 8.9 cm to 25.9 cm in total length (TL), caught monthly in fish traps from February 1998 to June 1999. Approximately...

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Autores principales:	Mancera-Rodríguez,Néstor Javier, Castro-Hernández,José Juan
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2015
Materias:	Trophic niche breadth eastern central Atlantic diet composition ontogenetic changes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572015000300002
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spelling	oai:scielo:S0718-195720150003000022015-10-19Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands areaMancera-Rodríguez,Néstor JavierCastro-Hernández,José Juan Trophic niche breadth eastern central Atlantic diet composition ontogenetic changes The feeding ecology of the planehead filefish, Stephanolepis hispidus, in waters of the Canary Islands was examined. The study was based on the stomach contents of 823 specimens, from 8.9 cm to 25.9 cm in total length (TL), caught monthly in fish traps from February 1998 to June 1999. Approximately 27.2% of the fish showed empty stomachs. This proportion varied significantly between sexes but not among size classes or the evaluated seasons. The food composition of planehead filefish was composed mainly of hydroids, amphipods, echinoids and algae. Gastropods, decapods and lamelibranchs were secondary prey. According to the observed ontogenetic shift, small-sized individuals (< 12.9 cm TL) fed primarily on small crustaceans (amphipods and hydroids), whereas large-sized specimens consumed echinoids, algae, and lamelibranchs. Hydroids and algae were more important in spring, and amphipods were more important in winter. Echinoids increased in summer and autumn. The values of Morisita's index indicated diet overlapping between individuals of length classes smaller and larger than 12.9 cm TL (S= 0.77). Likewise, the seasonal variation in the diet overlapping was high during winter (S= 0.95) and spring (S= 0.93) but was relatively lower in autumn (S= 0.68). The results indicated that the diet of planehead filefish was characterized by a narrow range of prey items with some degree of selectivity and was composed mainly of macroinvertebrates.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.50 n.2 20152015-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572015000300002en10.4067/S0718-19572015000300002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Trophic niche breadth eastern central Atlantic diet composition ontogenetic changes
spellingShingle	Trophic niche breadth eastern central Atlantic diet composition ontogenetic changes Mancera-Rodríguez,Néstor Javier Castro-Hernández,José Juan Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area
description	The feeding ecology of the planehead filefish, Stephanolepis hispidus, in waters of the Canary Islands was examined. The study was based on the stomach contents of 823 specimens, from 8.9 cm to 25.9 cm in total length (TL), caught monthly in fish traps from February 1998 to June 1999. Approximately 27.2% of the fish showed empty stomachs. This proportion varied significantly between sexes but not among size classes or the evaluated seasons. The food composition of planehead filefish was composed mainly of hydroids, amphipods, echinoids and algae. Gastropods, decapods and lamelibranchs were secondary prey. According to the observed ontogenetic shift, small-sized individuals (< 12.9 cm TL) fed primarily on small crustaceans (amphipods and hydroids), whereas large-sized specimens consumed echinoids, algae, and lamelibranchs. Hydroids and algae were more important in spring, and amphipods were more important in winter. Echinoids increased in summer and autumn. The values of Morisita's index indicated diet overlapping between individuals of length classes smaller and larger than 12.9 cm TL (S= 0.77). Likewise, the seasonal variation in the diet overlapping was high during winter (S= 0.95) and spring (S= 0.93) but was relatively lower in autumn (S= 0.68). The results indicated that the diet of planehead filefish was characterized by a narrow range of prey items with some degree of selectivity and was composed mainly of macroinvertebrates.
author	Mancera-Rodríguez,Néstor Javier Castro-Hernández,José Juan
author_facet	Mancera-Rodríguez,Néstor Javier Castro-Hernández,José Juan
author_sort	Mancera-Rodríguez,Néstor Javier
title	Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area
title_short	Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area
title_full	Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area
title_fullStr	Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area
title_full_unstemmed	Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area
title_sort	feeding ecology of the planehead filefish stephanolepis hispidus (pisces: monacanthidae), in the canary islands area
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572015000300002
work_keys_str_mv	AT mancerarodrigueznestorjavier feedingecologyoftheplaneheadfilefishstephanolepishispiduspiscesmonacanthidaeinthecanaryislandsarea AT castrohernandezjosejuan feedingecologyoftheplaneheadfilefishstephanolepishispiduspiscesmonacanthidaeinthecanaryislandsarea
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Feeding ecology of the planehead filefish Stephanolepis hispidus (Pisces: Monacanthidae), in the Canary Islands area

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