Aquat. Living Resour.
Volume 30, 2017
|Number of page(s)||6|
|Published online||05 April 2017|
Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain)
Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Cádiz,
Puerto Pesquero, Muelle de Levante, s/n, PO Box 2609,
2 Sea Around Us Project, Institute for the Oceans and Fisheries, University of British Columbia, 2202 Main Mall, Vancouver, B.C. V6T 1Z4, Canada
a Current address: Centre of Marine Sciences (CCMAR), University of the Algarve, Campus de Gambelas, Faro 8005-139, Portugal
Accepted: 6 March 2017
Life history traits are available for many fish species in different regions, but less so for invertebrates such as cephalopods and crustaceans, though, they are increasingly needed for implementing an ecosystem-based approach. Recent food web modelling in the Gulf of Cadiz has identified invertebrates as keystone groups. However, information on life history traits of such groups remains incomplete in this region. To fill this knowledge gap, we report length–weight relationships for 12 cephalopods and 10 crustaceans collected in the Gulf of Cadiz from 2009 to 2013. This study reports, for the first time, life history traits of nine species in the area (Chlorotocus crassicornis, Pasiphaea sivado, Plesionika heterocarpus, Plesionika martia, Processa canaliculata, Solenocera membranacea, Allotheutis media, Sepia orbignyana and Sepietta oweniana). For each species, length–weight relationships, minimum and maximum lengths, mean weights, and depth ranges are presented. Overall, the results revealed that all species showed negative allometric growth (hypoallometry), except P. sivado, the only species showing an isometric growth pattern. We expect that this study will contribute to link sustainable fisheries with biodiversity conservation goals enabling the implementation of operational ecosystem-based management in the Gulf of Cadiz.
Key words: Maximum length / Growth pattern / Invertebrates / Trophic resources / Distribution range / Ecosystem-based management
© EDP Sciences 2017
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.