Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico

Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico

Natural feeding of juveniles of Lutjanus peru off the coast of Jalisco and Colima, Mexico, is analyzed. A total of 915 organisms were caught; 696 stomachs were examined and 219 were discarded because they were empty. Items in the stomach content were identified to the lowest possible taxonomic level...

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Glavni autori: Saucedo-Lozano, M, González-Sansón, G, Chiappa-Carraza, X
Format: Online
Jezik:eng
Izdano: Iniversidad Autónoma de Baja California 1999
Online pristup:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/716
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spelling oai:cienciasmarinas.com.mx:article-7162019-05-17T00:24:03Z Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico Alimentación natural de juveniles de Lutjanus peru (Nichols y Murphy, 1922) (Lutjanidae: Perciformes) en la costa de Jalisco y Colima, México Saucedo-Lozano, M González-Sansón, G Chiappa-Carraza, X natural feeding juvenile Lutjanus peru coast of Jalisco and Colima alimentación natural juvenil Lutjanus peru costa de Jalisco y Colima Natural feeding of juveniles of Lutjanus peru off the coast of Jalisco and Colima, Mexico, is analyzed. A total of 915 organisms were caught; 696 stomachs were examined and 219 were discarded because they were empty. Items in the stomach content were identified to the lowest possible taxonomic level. Numeric percentage, gravimetric percentage, frequency of occurrence and the index of relative importance were calculated for each prey. The diet of the organisms studied comprises mainly fish and stomatopods, of which members of the family Congridae and organisms of Squilla hancocki are the most abundant in the stomach content. Feeding variations occurred during the year and the diet varied with respect to fish length. A significant positive correlation between the length of the crustaceans consumed and fish length was found. Differences between fish length and prey length were further verified with the Kruskal-Wallis test. Distribution of L. peru juveniles was mostly restricted to the 20- and 40-m isobaths. Low values of abundance were found at 60 m. Diet overlap between months is more frequent when prey number is considered. Se analiza la alimentación natural de juveniles de Lutjanus peru en la costa de Jalisco y Colima, México. Se capturó un total de 915 organismos, de los cuales se analizaron 696 estómagos y se descartaron 219 por estar vacíos. La identificación del contenido estomacal de cada organismo se llevó a cabo hasta el nivel taxonómico más bajo posible. Se obtuvieron los valores del porcentaje numérico, porcentaje gravimétrico, porciento de frecuencia de ocurrencia e índice de importancia relativa para cada uno de los organismos presa. La dieta alimentaria de los organismos estudiados está compuesta principalmente por peces y estomatópodos, de los cuales las especies más abundantes son peces de la familia Congridae y Squilla hancocki. Se encontró una variación en la alimentación a lo largo del año y con la talla de los juveniles de L. peru. La correlación entre la longitud de los crustáceos consumidos con mayor frecuencia y la longitud de los juveniles de L. peru resultó significativa. A su vez, con la prueba de Kruskal-Wallis se pudo observar una diferencia significativa entre la media de la talla de los juveniles y la media de la longitud de las presas. Se observó que los juveniles se encuentran principalmente a profundidades de 20 a 40 m y son escasos a 60 m. Por último, se observó que el traslapo de dietas ocurre en más ocasiones (meses) cuando es considerado el número de presas. Iniversidad Autónoma de Baja California 1999-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/716 10.7773/cm.v25i3.716 Ciencias Marinas; Vol. 25 No. 3 (1999); 381-400 Ciencias Marinas; Vol. 25 Núm. 3 (1999); 381-400 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/716/644
institution Ciencias Marinas
collection OJS
language eng
format Online
author Saucedo-Lozano, M
González-Sansón, G
Chiappa-Carraza, X
spellingShingle Saucedo-Lozano, M
González-Sansón, G
Chiappa-Carraza, X
Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico
author_facet Saucedo-Lozano, M
González-Sansón, G
Chiappa-Carraza, X
author_sort Saucedo-Lozano, M
title Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico
title_short Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico
title_full Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico
title_fullStr Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico
title_full_unstemmed Natural feeding of juveniles of Lutjanus peru (Nichols and Murphy, 1922) (Lutjanidae: Perciformes) off the coast of Jalisco and Colima, Mexico
title_sort natural feeding of juveniles of lutjanus peru (nichols and murphy, 1922) (lutjanidae: perciformes) off the coast of jalisco and colima, mexico
description Natural feeding of juveniles of Lutjanus peru off the coast of Jalisco and Colima, Mexico, is analyzed. A total of 915 organisms were caught; 696 stomachs were examined and 219 were discarded because they were empty. Items in the stomach content were identified to the lowest possible taxonomic level. Numeric percentage, gravimetric percentage, frequency of occurrence and the index of relative importance were calculated for each prey. The diet of the organisms studied comprises mainly fish and stomatopods, of which members of the family Congridae and organisms of Squilla hancocki are the most abundant in the stomach content. Feeding variations occurred during the year and the diet varied with respect to fish length. A significant positive correlation between the length of the crustaceans consumed and fish length was found. Differences between fish length and prey length were further verified with the Kruskal-Wallis test. Distribution of L. peru juveniles was mostly restricted to the 20- and 40-m isobaths. Low values of abundance were found at 60 m. Diet overlap between months is more frequent when prey number is considered.
publisher Iniversidad Autónoma de Baja California
publishDate 1999
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/716
_version_ 1715724002224242688

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