Life history traits influence in gonad composition of two sympatric species of flatfish

Authors

  • Juan Luis Gadea Alvarez Ministerio de Ganadería Agricultura y Pesca; Dirección Nacional de Recursos Acuáticos; Departamento de Acuicultura
  • Martín Bessonart Parque Nacional Cabo Polonio; Estación Biológica
  • Larisa Magnone Universidad de la República; Facultad de Ciencias; Laboratorio de Recursos Naturales
  • Florencia Féola Parque Nacional Cabo Polonio; Estación Biológica
  • María Salhi Universidad de la República; Facultad de Ciencias; Laboratorio de Recursos Naturales

DOI:

https://doi.org/10.1590/S1679-87592015084206303

Abstract

Paralichthys orbignyanus and Paralichthys patagonicus are flatfish with different life history traits, having in common the condition of breeding in seawater. Paralichthys patagonicus remain their whole life in open seawater and Paralichthys orbignyanus are sometimes found in brackish water bodies. As marine and estuarine food webs have different fatty acid (FA) compositions, the aim of this study was to characterize the gonadal maturation of P. orbignyanus and P. patagonicus females through the analysis of lipid content and FA profile in order to understand to what extent life history traits are reflected in the ovarian composition. During gonadal maturation lipid content increased and FA profiles changed in both species, but the lipid increase was greater in P. orbignyanus. The N-3FA and n-3HUFA proportions increased in both species but were higher in P. orbignyanus. The differences between the lifestyles of these species were reflected in the ovarian FA profile mainly as a result of differences in their FA metabolism, causing a greater accumulation of n-3FA and n-3HUFA in P. orbignyanus than in P. patagonicus. The higher lipid accumulation in P. orbignyanus’ ovaries could indicate that this species, feeding in brackish water bodies, has the possibility of storing more energy than P. patagonicus.

Downloads

Download data is not yet available.

Downloads

Published

2015-09-01

How to Cite

Alvarez, J. L. G., Bessonart, M., Magnone, L., Féola, F., & Salhi, M. (2015). Life history traits influence in gonad composition of two sympatric species of flatfish . Brazilian Journal of Oceanography, 63(3), 171-179. https://doi.org/10.1590/S1679-87592015084206303

Issue

Section

Original Article