Academic Journal
Size-dependent survival of European hake juveniles in the Mediterranean Sea
| Title: | Size-dependent survival of European hake juveniles in the Mediterranean Sea |
|---|---|
| Authors: | Manuel Hidalgo, Alessandro Ligas, José María Bellido, Isabella Bitetto, Pierluiggi Carbonara, Roberto Carlucci, Beatriz Guijarro, Angelique Jadaud, Giuseppe Lembo, Chiara Manfredi, Antonio Esteban, Germana Garofalo, Zdravko Ikica, Cristina García, Luis Gil de Sola, Stefanos Kavadas, Irida Maina, Letizia Sion, Stefania Vittori, Nedo Vrgoc |
| Source: | Scientia Marina, Vol 83, Iss S1, Pp 207-221 (2019) |
| Publisher Information: | Consejo Superior de Investigaciones Científicas, 2019. |
| Publication Year: | 2019 |
| Collection: | LCC:Aquaculture. Fisheries. Angling |
| Subject Terms: | juvenile survival, european hake, mediterranean sea, size dependence, Aquaculture. Fisheries. Angling, SH1-691 |
| Description: | Most studies on European hake focus on the recruitment process and nursery areas, whereas the information is comparatively limited on the ecology of the juvenile stage (ca. second year of life)—the one most exploited by the Mediterranean trawl fisheries. Using information of the MEDITS programme, we provide a spatial and temporal assessment of the influence of body size and growth on hake survival from recruits (age 0) to juveniles (age 1), along with the impact of surface temperature and chlorophyll variability. At a biogeographic scale, size-dependent survival is supported, with areas with higher mean length of recruits and juveniles yielding higher survival. A similar pattern was observed at interannual level in some western Mediterranean areas, also mediated by a density-dependent effect on growth. However, the most recurrent inter-annual pattern was a negative effect of size on survival, which could be attributed to potential ontogenetic changes in catchability and underrepresentation of intra-annual recruitment pulses that are seasonally inaccessible to the MEDITS survey. Results also evidence that survival in the Alboran and Adriatic seas is dependent on the primary production variability, and that Corsica and Sardinia could be potential feeding grounds receiving juveniles from neighbouring areas. The present study reveals the importance of size- and growth-dependent survival in the juvenile stage of European hake in the Mediterranean Sea. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 0214-8358 1886-8134 |
| Relation: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1801; https://doaj.org/toc/0214-8358; https://doaj.org/toc/1886-8134 |
| DOI: | 10.3989/scimar.04857.16A |
| Access URL: | https://doaj.org/article/4b9f3aaa84374815890cf2c279f5235b |
| Accession Number: | edsdoj.4b9f3aaa84374815890cf2c279f5235b |
| Database: | Directory of Open Access Journals |
| ISSN: | 02148358 18868134 |
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| DOI: | 10.3989/scimar.04857.16A |