Marcadores tróficos en larvas de atún rojo (Thunnus thynnus)

Authors: Varela, J.L. (José Luis); Sorell, J.M. (Joan Miquel); Ortega-García, A. (Aurelio); de-la-Gándara, F. (Fernando); Medina, A.; Mourente, G. (Gabriel);

handle: 10261/313694 , 10508/9874

Marcadores tróficos en larvas de atún rojo (Thunnus thynnus)

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Abstract

Se ha analizado la incorporación de isótopos estables y ácidos grasos en larvas de atún rojo (Thunnus thynnus) alimentadas con rotíferos enriquecidos con Algamac® y Origreen®. Los factores de enriquecimiento larva-rotífero para el isótopo de nitrógeno (15N/14N, δ15N) y de carbono (13C/12C, δ13C) mostraron valores diferentes en función de la dieta suministrada. Asimismo, se encontraron diferencias en los perfiles de ácidos grasos de las larvas, debidas a la dieta, salvo para el 18:1n-9 y el DHA. No se encontraron diferencias significativas en el crecimiento.

Incorporation of nitrogen/carbon stable isotopes and total lipid fatty acids was analysed in Atlantic Bluefin tuna (Thunnus thynnus) larvae fed with rotifers enriched with Algamac® and Origreen®, respectively. Larvae-rotifer enrichment factors for nitrogen (15N/14N, δ15N) and carbon (13C/12C, δ13C) showed significant different values according to diet composition. Moreover, significant differences were also observed in larvae total lipid fatty acid profiles with the exceptions of 18:1n-9 and DHA. No growth significant differences were found.

Country

Spain

Related Organizations

Spanish Institute of Oceanography
Spain
Spanish National Research Council
Spain

Keywords

Acuicultura, alimentación, cultivo larvario, Thunnus thynnus, Cultivo larvario, Centro Oceanográfico de Murcia, firma isotópica, atún rojo

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