Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico

Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico

We describe the diet, feeding strategy, and trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico during both the warm and cold seasons. A total of 4,547 stomachs were collected, with 1,921 empty stomachs being discarded. According to the stom...

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Autores principales: Flores-Ortega, Juan Ramón, Godínez-Domínguez, Enrique, González-Sansón, Gaspar
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2020
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3056
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spelling oai:cienciasmarinas.com.mx:article-30562024-02-28T00:37:43Z Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico Interacciones tróficas de las 11 especies de peces demersales más abundantes en la costa central mexicana del Pacífico Flores-Ortega, Juan Ramón Godínez-Domínguez, Enrique González-Sansón, Gaspar trophic interactions demersal fish niche breadth stomach contents interacciones tróficas demersal, peces amplitud de nicho contenido estomacal We describe the diet, feeding strategy, and trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico during both the warm and cold seasons. A total of 4,547 stomachs were collected, with 1,921 empty stomachs being discarded. According to the stomach content analysis, 95 prey items were identified and grouped into 70 food categories belonging to crustaceans, mollusks, fish, polychaetes, and echinoderms. The Smith index value and high prey diversity indicated that the 11 fish species exhibited a generalist opportunistic feeding strategy in both survey seasons. Low values of dietary overlap were recorded, and only a few significant cases of dietary overlap were found in the interaction between some rays (Urotrygonidae) and flatfish species (Pleuronectiformes). The availability and abundance of prey resources in the environment and the generalization of niche breadth allows the demersal predator community of the soft shallow bottoms to coexist without any evident competition for trophic resources. Se realizó la descripción de la dieta, la estrategia alimenticia y las interacciones tróficas de las 11 especies de peces demersales con mayor abundancia en la costa central mexicana del Pacífico durante 2 periodos, el cálido y el frío. En total se recolectaron 4,547 estómagos, de los cuales 1,921 estómagos vacíos fueron descartados. En el análisis de los contenidos estomacales fueron identificados 95 entidades alimentarias, que fueron agrupados en 70 categorías alimentarias pertenecientes a crustáceos, moluscos, peces, poliquetos y equinodermos. De acuerdo a los valores del índice de Smith y la alta diversidad de presas, la estrategia alimenticia mostrada por las 11 especies en ambas temporadas de estudio fue generalista-oportunista. Se registraron valores bajos en la superposición de la dieta y solamente se encontraron pocos casos significativos de superposición de la dieta en la interacción entre algunas especies de rayas de la familia Urotrygonidae y los lenguados del orden Pleuronectiformes. La disponibilidad y abundancia de recursos presa en el ambiente y la generalización de la amplitud del nicho permiten la coexistencia de la comunidad demersal de depredadores de fondos blandos someros sin competencia evidente por los recursos tróficos. Iniversidad Autónoma de Baja California 2020-06-26 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/3056 10.7773/cm.v46i2.3056 Ciencias Marinas; Vol. 46 No. 2 (2020); 101–117 Ciencias Marinas; Vol. 46 Núm. 2 (2020); 101–117 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3056/420420499 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3056/420420951 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3056/420420656 Copyright (c) 2020 Ciencias Marinas https://creativecommons.org/licenses/by/4.0
institution Ciencias Marinas
collection OJS
language eng
format Online
author Flores-Ortega, Juan Ramón
Godínez-Domínguez, Enrique
González-Sansón, Gaspar
spellingShingle Flores-Ortega, Juan Ramón
Godínez-Domínguez, Enrique
González-Sansón, Gaspar
Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico
author_facet Flores-Ortega, Juan Ramón
Godínez-Domínguez, Enrique
González-Sansón, Gaspar
author_sort Flores-Ortega, Juan Ramón
title Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico
title_short Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico
title_full Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico
title_fullStr Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico
title_full_unstemmed Trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico
title_sort trophic interactions between the 11 most abundant demersal fish species on the pacific coast of central mexico
description We describe the diet, feeding strategy, and trophic interactions between the 11 most abundant demersal fish species on the Pacific coast of central Mexico during both the warm and cold seasons. A total of 4,547 stomachs were collected, with 1,921 empty stomachs being discarded. According to the stomach content analysis, 95 prey items were identified and grouped into 70 food categories belonging to crustaceans, mollusks, fish, polychaetes, and echinoderms. The Smith index value and high prey diversity indicated that the 11 fish species exhibited a generalist opportunistic feeding strategy in both survey seasons. Low values of dietary overlap were recorded, and only a few significant cases of dietary overlap were found in the interaction between some rays (Urotrygonidae) and flatfish species (Pleuronectiformes). The availability and abundance of prey resources in the environment and the generalization of niche breadth allows the demersal predator community of the soft shallow bottoms to coexist without any evident competition for trophic resources.
publisher Iniversidad Autónoma de Baja California
publishDate 2020
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3056
_version_ 1792606981375131648

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