Hábitos alimentarios del besugo Epigonus crassicaudus combinando contenido estomacal e isótopos estables
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TLDR
In this paper, a trabajo estudio of the habitos alimentarios combinando analisis estomacales and estabilidad isotopica was conducted.Abstract:
El besugo, Epigonus crassicaudus, es una especie de importancia economica para la actividad pesquera que opera en el centro-sur de Chile. A pesar de ello, poco es lo que se conoce respecto a su biologia. En este sentido, este trabajo estudio los habitos alimentarios combinando analisis estomacales y de estabilidad isotopica. Los resultados del analisis dan cuenta de la importancia de los peces mesopelagicos (Myctophidae, Stomiidae) en la dieta con un aporte del 80%, seguido por crustaceos ( Sergestes arcticus ) alcanzando un 10%. No se detectaron diferencias en la dieta en peces con distinto grado de madurez sexual. En tanto, los valores de los isotopos de nitrogeno y carbono mostraron valores de promedio de 17,12 ± 1,1 δ 15N y de -17,51 ± 0,7 δ 13C, respectivamente. La constitucion de valores de δ 13C fue proporcional al tamano corporal de los besugos: individuos de mayor tamano habitan en ambientes mas demersales que ejemplares de menor tamano. De acuerdo a estos resultados, el besugo se situa como consumidor secundario.read more
Citations
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Nuevos aires en la ictiología en Chile
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Reproductive traits and natural mortality of the cardinalfish Epigonus crassicaudus: crucial information for stock assessment and sustainable management measures
TL;DR: The life history parameters estimated in the present study can be used to evaluate possible time variability in maturity and M rates and could be used in stock assessment analysis and to apply effective management measures in the fishery.
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Local and global environmental drivers of growth chronologies in a demersal fish in the south-eastern Pacific Ocean
TL;DR: In this paper, an extensive growth chronology was reconstructed from the annual growth of sagittal otoliths as a proxy for somatic growth for the cardinalfish (Epigonus crassicaudus).
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Fishing opportunities for the deepwater cardinalfish ( Epigonus crassicaudus ) in the continental shelf break along central Chile
TL;DR: In this article , the authors analyzed records of fishing logs covering the period 1999-2007 and compared the position of individual fishing hauls (Euclidean distance) applying a hierarchical agglomerative clustering technique.
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