Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California

Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California

Understanding the feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, is important to elucidate relevant aspects of its trophic ecology (prey intake, diet breadth, trophic level, and energy flows), which in general provide valuable information on the dynamics of marine...

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Prif Awduron: Moreno-Sánchez, Xchel Gabriel, Palacios-Salgado, Deivis Samuel, Granados-Amores, Jasmin, Abitia-Cárdenas, Leonardo Andrés, Escobar-Sánchez, Ofelia
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Cyhoeddwyd: Iniversidad Autónoma de Baja California 2019
Mynediad Ar-lein:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2969
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id oai:cienciasmarinas.com.mx:article-2969
record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Moreno-Sánchez, Xchel Gabriel
Palacios-Salgado, Deivis Samuel
Granados-Amores, Jasmin
Abitia-Cárdenas, Leonardo Andrés
Escobar-Sánchez, Ofelia
spellingShingle Moreno-Sánchez, Xchel Gabriel
Palacios-Salgado, Deivis Samuel
Granados-Amores, Jasmin
Abitia-Cárdenas, Leonardo Andrés
Escobar-Sánchez, Ofelia
Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California
author_facet Moreno-Sánchez, Xchel Gabriel
Palacios-Salgado, Deivis Samuel
Granados-Amores, Jasmin
Abitia-Cárdenas, Leonardo Andrés
Escobar-Sánchez, Ofelia
author_sort Moreno-Sánchez, Xchel Gabriel
title Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California
title_short Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California
title_full Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California
title_fullStr Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California
title_full_unstemmed Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California
title_sort feeding habits of the mexican barracuda, sphyraena ensis jordan and gilbert, 1882, in the southeastern end of the gulf of california
description Understanding the feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, is important to elucidate relevant aspects of its trophic ecology (prey intake, diet breadth, trophic level, and energy flows), which in general provide valuable information on the dynamics of marine communities. Therefore, the purpose of this work was to assess the dietary habits of the Mexican barracuda, S. ensis, and to determine dietary variations by sex (males, females), size (small, medium, and large individuals), and season (rainy and dry). Monthly samples were obtained from February 2014 to January 2015 in the San Blas region, Nayarit, Mexico. A total of 308 specimens were captured. Individuals measured between 30.6 and 58.7 cm total length and weighed between 405 and 836 g. Of the analyzed stomachs, 264 (86%) contained food and 44 (14%) were empty. The diet of the Mexican barracuda comprised 13 prey items from 11 families, 12 genera, and 9 species. According to the index of relative importance, the most important prey were fishes, particularly Sardinops spp. (40.36%), Hemiramphus saltator (40.24%), Opisthopterus dovii (10.83%), Anchoa spp. (4.17%), and Mugil cephalus (3.05%). We conclude that the Mexican barracuda can be categorized as an opportunistic ichthyophagous predator in coastal epipelagic zones that feeds mainly on schooling fish species. The trophic spectrum did not vary significantly by sex or size, but the consumption of preferred prey varied significantly by season.
publisher Iniversidad Autónoma de Baja California
publishDate 2019
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2969
_version_ 1792606977623326720
spelling oai:cienciasmarinas.com.mx:article-29692024-02-29T03:15:37Z Feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, in the southeastern end of the Gulf of California Hábitos alimentarios de la barracuda mexicana, Sphyraena ensis Jordan y Gilbert, 1882, en el extremo sureste del golfo de California Moreno-Sánchez, Xchel Gabriel Palacios-Salgado, Deivis Samuel Granados-Amores, Jasmin Abitia-Cárdenas, Leonardo Andrés Escobar-Sánchez, Ofelia Sphyraenidae pelagic predator ichthyophagous Sardinops spp. Hemiramphus saltator Sphyraenidae depredador pelágico ictiófago Sardinops spp. Hemiramphus saltator Understanding the feeding habits of the Mexican barracuda, Sphyraena ensis Jordan and Gilbert, 1882, is important to elucidate relevant aspects of its trophic ecology (prey intake, diet breadth, trophic level, and energy flows), which in general provide valuable information on the dynamics of marine communities. Therefore, the purpose of this work was to assess the dietary habits of the Mexican barracuda, S. ensis, and to determine dietary variations by sex (males, females), size (small, medium, and large individuals), and season (rainy and dry). Monthly samples were obtained from February 2014 to January 2015 in the San Blas region, Nayarit, Mexico. A total of 308 specimens were captured. Individuals measured between 30.6 and 58.7 cm total length and weighed between 405 and 836 g. Of the analyzed stomachs, 264 (86%) contained food and 44 (14%) were empty. The diet of the Mexican barracuda comprised 13 prey items from 11 families, 12 genera, and 9 species. According to the index of relative importance, the most important prey were fishes, particularly Sardinops spp. (40.36%), Hemiramphus saltator (40.24%), Opisthopterus dovii (10.83%), Anchoa spp. (4.17%), and Mugil cephalus (3.05%). We conclude that the Mexican barracuda can be categorized as an opportunistic ichthyophagous predator in coastal epipelagic zones that feeds mainly on schooling fish species. The trophic spectrum did not vary significantly by sex or size, but the consumption of preferred prey varied significantly by season. El estudio de los hábitos alimentarios de la barracuda mexicana, Sphyraena ensis Jordan y Gilbert, 1882, es importante para conocer los aspectos relevantes de su ecología trófica (presas consumidas, amplitud de dieta, nivel trófico y flujos de energía), ya que brindan información valiosa sobre la dinámica de las comunidades marinas. En este contexto, el objetivo del presente trabajo fue determinar los hábitos alimentarios de la barracuda mexicana, S. ensis, así como las variaciones tróficas con respecto a sexo (machos, hembras), tallas (individuos pequeños, medianos y grandes) y estacionalidad (lluvias y secas). Se obtuvieron muestras mensuales durante el periodo de febrero de 2014 a enero de 2015 en la región de San Blas, Nayarit, México. En total se capturaron 308 organismos, con tallas de entre 30.6 y 58.7 cm de longitud total y pesos de entre 405 y 836 g. De los estómagos analizados, 264 (86%) contenían alimentos y 44 (14%) estaban vacíos. El espectro trófico de la barracuda mexicana se conformó de 13 tipos de presa, agrupadas en 11 familias, 12 géneros y 9 especies. De acuerdo con el índice de importancia relativa, las presas más importantes fueron los peces, particularmente Sardinops spp. (40.36%), Hemiramphus saltator (40.24%), Opisthopterus dovii (10.83%), Anchoa spp. (4.17%) y Mugil cephalus (3.05%). Con base en los resultados obtenidos, la barracuda mexicana puede categorizarse como un depredador ictiófago oportunista de la zona epipelágica costera que se alimenta, principalmente, de especies de peces que forman densos cardúmenes. Su espectro trófico no presentó variaciones significativas por sexo y talla, pero el consumo de las presas más importantes varió significativamente por estación. Iniversidad Autónoma de Baja California 2019-09-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2969 10.7773/cm.v45i3.2969 Ciencias Marinas; Vol. 45 No. 3 (2019); 137–150 Ciencias Marinas; Vol. 45 Núm. 3 (2019); 137–150 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2969/420420484 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2969/420420980 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/2969/420420643 Copyright (c) 2019 Ciencias Marinas https://creativecommons.org/licenses/by/4.0

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