Parasitism, condition and reproduction of the European hake (Merluccius merluccius) in the northwestern Mediterranean Sea

Abstract : It is well known that parameters relating to physical condition and reproduction of fish provide essential data for estimating the productivity of exploited populations, as is the case with the European hake (Merluccius merluccius) in the northwestern Mediterranean Sea. Although parasitism might affect these parameters, research in this area is very scarce (and in the case of the Mediterranean almost non-existent). This study evaluates for the first time the potential link between parasitism, condition and reproduction of the European hake. Indicators of fish energy reserves (total lipid content in liver and gonads) and reproductive capacity (fecundity, egg quality and atresia) were evaluated, as were the prevalence and intensity of infection by metazoan parasites. The results indicate that the impact of anisakid nematodes is mostly negative and occurs mainly when hake are allocating their energy reserves to gonadal development. Although the results reveal a link between parasitism, condition and reproduction, we concluded that the northwestern Mediterranean hake population is in equilibrium with its metazoan parasites, which are not causing severe impairment to their physical condition or reproductive capacity.
Type de document :
Article dans une revue
ICES Journal of Marine Science, Oxford University Press (OUP), 2014, 71 (5), p. 1088-1099. 〈10.1093/icesjms/fst217〉
Liste complète des métadonnées

https://hal-univ-perp.archives-ouvertes.fr/hal-01267574
Contributeur : Olivier Savoyat <>
Soumis le : jeudi 4 février 2016 - 15:37:15
Dernière modification le : vendredi 2 février 2018 - 19:30:12

Lien texte intégral

Identifiants

Collections

Citation

D. Ferrer-Maza, J. Lloret, M. Munoz, E. Faliex, S. Vila, et al.. Parasitism, condition and reproduction of the European hake (Merluccius merluccius) in the northwestern Mediterranean Sea. ICES Journal of Marine Science, Oxford University Press (OUP), 2014, 71 (5), p. 1088-1099. 〈10.1093/icesjms/fst217〉. 〈hal-01267574〉

Partager

Métriques

Consultations de la notice

130