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Article Dans Une Revue Journal of Applied Ichthyology Année : 2015

Morphological parameters of abundant and threatened chondrichthyans of the northwestern Mediterranean Sea

C. Barria
  • Fonction : Auteur
J. Navarro
  • Fonction : Auteur
U. Fernandez-Arcaya
  • Fonction : Auteur
R. Sáez-Liante
  • Fonction : Auteur

Résumé

The diversity of chondrichthyans in the Mediterranean Sea is relatively high; however, available data indicate that this group is declining in abundance and several species are becoming rare. As a result, the collection of biological data is a priority for demographic models, stock assessments, and food web analysis. In the present study, we report morphological parameters and length-weight relationships of several chondrichthyan species, both abundant and threatened, from the western Mediterranean Sea. Samples were obtained with commercial and scientific bottom trawl vessels between 2001 and 2013. A total of 893 individuals belonging to 11 families and 20 species were weighed and total lengths measured. In addition, seven species of large demersal sharks were measured and length-length relationships obtained to study the relationships between different body length measurements. All species showed positive allometric or isometric growth, except for Centroscymnus coelolepis. The results of the length-weight relationships reveal differences between the western Mediterranean and nearby areas, depending on the species studied.

Dates et versions

hal-01840074 , version 1 (16-07-2018)

Identifiants

Citer

C. Barria, J. Navarro, M. Coll, U. Fernandez-Arcaya, R. Sáez-Liante. Morphological parameters of abundant and threatened chondrichthyans of the northwestern Mediterranean Sea. Journal of Applied Ichthyology, 2015, 31 (1), pp.114--119. ⟨10.1111/jai.12499⟩. ⟨hal-01840074⟩
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