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Revista de Biología Tropical
Article . 2003
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Hábitos alimentarios de Lutjanus peru (Pisces: Lutjanidae) en las costas de Guerrero, México

Authors: Santamaría Miranda, Apolinar; Elorduy Garay, Juan F.; Rojas Herrera, Agustín A.;

Hábitos alimentarios de Lutjanus peru (Pisces: Lutjanidae) en las costas de Guerrero, México

Abstract

En este artículo se describen los hábitos alimentarios del huachinango del Pacífico Lutjanus peru en la costa sur del estado de Guerrero, México. Estos datos son importantes para el manejo de las pesquerías locales. A partir de capturas comerciales, se recolectaron 385 estómagos llenos (206 de hembras y 179 de machos) en total, mensualmente, durante 1993 y 1994. El contenido estomacal se identificó hasta el nivel de especie cuando fue posible. Los elementos alimentarios se agruparon taxonómicamente, y se cuantificaron, se pesaron y se obtuvo la frecuencia de aparición. Se calculó el índice de importancia relativa (IIR) del total de la muestra, por meses, por sexos y tallas. Se obtuvieron 42 elementos alimentarios en total, en 1993, y 43 en 1994. En 1993 La dieta estuvo constituida por peces, crustáceos y moluscos. El agrupamiento de las especies, géneros o familias presa produjo 14 grupos alimentarios, de la siguiente forma: Moluscos, Anfípodos, Copépodos, Estomatópodos, Penaeus vannamei, Larvas de braquiuros, Larvas de estomatópodos, Larvas de la familia Albuneidae, Otros crustáceos, Anchoa ischana, Anchoa lucida, Otros peces, Salpas, Moni. Anchoa ischana dominó el espectro trófico ambos años. Pero, los Anfípodos, Anchoa lucida y Otros peces tuvieron índices importantes en 1994. Existió una gran variabilidad en la composición de la dieta de cada mes. Sin embargo, los crustáceos en conjunto dominaron la dieta de febrero a agosto de 1993. En 1994, los crustáceos sólo fueron dominantes en marzo y agosto. No se encontraron diferencias en la dieta de peces inmaduros, machos y hembras. La dieta del huachinango del Pacífico varía con el crecimiento, aunque siempre se encuentran los mismos grupos de alimento. En la fase adulta, en clases de longitud mayores a 261 mm LF, existe un cierto grado de especialización, ya que consumen más peces, principalmente engráulidos.

In this paper we describe the feeding habits of the Red snapper (Lutjanus peru) in the southern coastof Guerrero state, Mexico. This data could be relevant to local fisheries management. In total 385 full stomachs(206 from females and 179 from males) were collected monthly in 1993 and 1994, from commercial catches.Stomach contents were identified to species level when possible. Food items were grouped into taxonomicallycoherent groups, and their numbers, weight and frequency of occurrence obtained. The index of relative importance(IRI) was calculated for the total sample, by month, sex and size class. In 1993, a total of 42 different fooditems were obtained, and 43 in 1994. Food items consisted of fishes, crustaceans, and mollusks. The groupingof prey species, genera, or families rendered 14 food groups, as follows: Mollusks, Amphipods, Copepods,Stomatopods, Penaeus vannamei, Brachiuran Larvae, Stomatopods Larvae, Family Albuneidae Larvae, Othercrustaceans, Anchoa ischana, Anchoa lucida, Other fishes, Salps and Unidentified organic matter. Anchoaischana dominated the trophic spectrum in both years. Although, Amphipods, Anchoa lucida and Other fisheshad important indexes in 1994. There was high variability in the diet composition by month. Nevertheless, in1993, from February to August, crustaceans as a whole dominated the diet. In 1994, crustaceans only dominatedin March and August. No differences in food habits were found between immature fish, males and females.The diet of the Red snapper varies as they grow, although the same food groups are found always. At the adultphase, in length classes over 261 mm FL, there is some degree of specialization, as they consume more fish, particularlyengraulids.

Country
Costa Rica
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Keywords

West central Mexico, Index of Relative Importance, QH301-705.5, Gravimetric Index, gravimetric index, Numeric Index, feeding habits, index of relative importance, lutjanus peru, west central mexico, Biology (General), Lutjanus peru, numeric index

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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