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Acercamiento a la composición de la dieta de Isurus oxyrinchus rafinesque, 1810 (Elasmobranchii: lamnidae) en aguas internacionales del Pacífico sur central

Authors: G.R. Mucientes-Sandoval; F. Saborido-Rey;

Acercamiento a la composición de la dieta de Isurus oxyrinchus rafinesque, 1810 (Elasmobranchii: lamnidae) en aguas internacionales del Pacífico sur central

Abstract

En el presente trabajo se analizaron las pautas alimenticias del marrajo azul. Isusrus oxyrinchus, especie accesoria en la pesquería con palngre de superficie donde la especie objetivo es el pez espada. Xiphias gladius. Se llevó a cabo el análisi in situ de 396 contenidos estomacales en individuos con tallas entre los 63 y 316 cm, durante noviembre 2004 y diciembre 2005, en aguas internacionales del Pacífico sur central. tras el análisi preliminar, se determinó el grado de repleción estomacal en la escala: vacío (63,9%), semilleno (23,3&) y lleno (9.8%); se constató la presencia o ausencia de las presas en los contenidos estomacales. Las presas más consumidas resultaron ser, por orden descendente, las potas (familia Ommastrephidae), peces óseos sin identificar, túnidos varios, peces sable, restos de cetáceos, y jureles. También se encontró material de origen antropogénico en los contenidos. Se observó un ligero cambio de selección de presas con la talla de los individuos.

6 páginas, 4 figuras.-- Trabajo presentado en el Congreso MarCuba 2006

Peer reviewed

Keywords

contenido estomacal, Pacífico Sur, Pacífico sur, Alimentación, Tiburones, GC1-1581, Oceanography, G, alimentación, Contenido estomacal, ISE, Geography. Anthropology. Recreation, tiburones, Isurus oxyrinchus

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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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