Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru

Batoids are among the least studied group of vertebrates and one of the most vulnerable to fishing. The rasptail skate, Rostroraja velezi, is a bycatch species in northern Peru for which there are no studies on its diet. This research aims to document the diet of R. velezi on the northern Peruvian c...

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Autores principales:	Molina-Salgado, Pamela, Alfaro-Shigueto, Joanna, González-Pestana, Adriana
Formato:	info:eu-repo/semantics/article
Lenguaje:	eng
Publicado:	Iniversidad Autónoma de Baja California 2021
Materias:	ecología trófica hábitos alimenticios mesodepredador red agallera Elasmobranchii trophic ecology feeding habits mesopredator gillnets
Acceso en línea:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3132
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id	repositorioinstitucional-20.500.12930-7591
record_format	dspace
spelling	repositorioinstitucional-20.500.12930-75912023-05-09T14:30:49Z Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru Dieta de la raya bruja Rostroraja velezi (Rajiformes: Rajidae) frente a la región Piura, Perú Molina-Salgado, Pamela Alfaro-Shigueto, Joanna González-Pestana, Adriana ecología trófica hábitos alimenticios mesodepredador red agallera Elasmobranchii trophic ecology feeding habits mesopredator gillnets Elasmobranchii Batoids are among the least studied group of vertebrates and one of the most vulnerable to fishing. The rasptail skate, Rostroraja velezi, is a bycatch species in northern Peru for which there are no studies on its diet. This research aims to document the diet of R. velezi on the northern Peruvian coast and to determine if there are sex-based differences in the diet. A total of 74 R. velezi stomachs were collected, 59 of which had stomach contents. The cumulative prey curve showed reliability in the number of samples collected. According to the prey-specific index of relative importance, diet was dominated by Acanthephyra sp. (31%), other unidentified Caridea (15%), and unidentified teleosts (17%). A low significant difference in diet between sexes was found (R = 0.21, P < 0.01). The trophic position of R. velezi was 3.9 ± 0.7. This species displays bentopelagic feeding behavior and it is a secondary predator in northern Peru. Los batoideos son uno de los grupos de vertebrados menos estudiados y uno de los más vulnerables a la pesca. La raya bruja Rostroraja velezi es una especie capturada incidentalmente en el norte del Perú para la cual no existen estudios sobre su dieta. El objetivo de esta investigación es documentar la dieta de R. velezi en la costa norte del Perú y determinar si existe una diferencia en la dieta según el sexo. Se recolectaron un total de 74 estómagos de R. velezi, de los cuales 59 presentaron contenido estomacal. La curva acumulativa de presas mostró confiabilidad en el número de muestras recolectadas. Según el porcentaje de importancia relativa por presa específica, la dieta estuvo dominada por Acanthephyra sp. (31%), otros carídeos no identificados (15%) y teleósteos no identificados (17%). Se determinó una baja diferencia significativa en la dieta entre sexos (R = 0.21, P < 0.01). La posición trófica de R. velezi fue de 3.9 ± 0.7. Esta especie presenta un comportamiento alimenticio bentopelágico y es considerada un depredador secundario en el norte del Perú. 2021-06-02 2021-06-03T03:55:46Z 2021-06-03T03:55:46Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed research note Nota de investigación arbitrada https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3132 10.7773/cm.v47i2.3132 https://hdl.handle.net/20.500.12930/7591 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3132/420420558 Copyright (c) 2021 Ciencias Marinas application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 47 No. 2 (2021); 127–138 Ciencias Marinas; Vol. 47 Núm. 2 (2021); 127–138 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	ecología trófica hábitos alimenticios mesodepredador red agallera Elasmobranchii trophic ecology feeding habits mesopredator gillnets Elasmobranchii
spellingShingle	ecología trófica hábitos alimenticios mesodepredador red agallera Elasmobranchii trophic ecology feeding habits mesopredator gillnets Elasmobranchii Molina-Salgado, Pamela Alfaro-Shigueto, Joanna González-Pestana, Adriana Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru
description	Batoids are among the least studied group of vertebrates and one of the most vulnerable to fishing. The rasptail skate, Rostroraja velezi, is a bycatch species in northern Peru for which there are no studies on its diet. This research aims to document the diet of R. velezi on the northern Peruvian coast and to determine if there are sex-based differences in the diet. A total of 74 R. velezi stomachs were collected, 59 of which had stomach contents. The cumulative prey curve showed reliability in the number of samples collected. According to the prey-specific index of relative importance, diet was dominated by Acanthephyra sp. (31%), other unidentified Caridea (15%), and unidentified teleosts (17%). A low significant difference in diet between sexes was found (R = 0.21, P < 0.01). The trophic position of R. velezi was 3.9 ± 0.7. This species displays bentopelagic feeding behavior and it is a secondary predator in northern Peru.
format	info:eu-repo/semantics/article
author	Molina-Salgado, Pamela Alfaro-Shigueto, Joanna González-Pestana, Adriana
author_facet	Molina-Salgado, Pamela Alfaro-Shigueto, Joanna González-Pestana, Adriana
author_sort	Molina-Salgado, Pamela
title	Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru
title_short	Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru
title_full	Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru
title_fullStr	Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru
title_full_unstemmed	Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru
title_sort	diet of the rasptail skate, rostroraja velezi (rajiformes: rajidae), off piura, peru
publisher	Iniversidad Autónoma de Baja California
publishDate	2021
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3132
_version_	1792609726349967360

Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru

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