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Provedor de dados:  ArchiMer
País:  France
Título:  From egg production to recruits: connectivity and inter-annual variability in the recruitment patterns of European anchovy in the northwestern Mediterranean
Autores:  Ospina-alvarez, Andres
Catalan, Ignacio A.
Bernal, Miguel
Roos, David
Palomera, Isabel
Data:  2015-11
Ano:  2015
Resumo:  We show the application of a Spatially-Explicit Individual-Based Model (SEIBM) to understand the recruitment process of European anchovy. The SEIBM is applied to simulate the effects of inter-annual variability in parental population spawning behavior and intensity, and ocean dynamics, on the dispersal of eggs and larvae from the spawning area in the Gulf of Lions (GoL) towards the coastal nursery areas in the GoL and Catalan Sea (northwestern Mediterranean Sea). For each of seven years (2003-2009), we initialize the SEIBM with the real positions of anchovy eggs during the spawning peak, from an acoustics-derived eggs production model. We analyze the effect of spawners’ distribution, timing of spawning, and oceanographic conditions on the connectivity patterns, growth, dispersal distance and late-larval recruitment (14 mm larva recruits, R14) patterns. The area of influence of the Rhône plume was identified as having a high probability of larval recruitment success (64%), but up to 36% of R14 larvae end up in the Catalan Coast. We demonstrate that the spatial paths of larvae differ dramatically from year to year, and suggest potential offshore nursery grounds. We showed that our simulations are coherent with existing recruitment proxies and therefore open new possibilities for fisheries management.
Tipo:  Text
Idioma:  Inglês

Editor:  Pergamon-elsevier Science Ltd
Relação:  info:eu-repo/grantAgreement/EC/FP7/287600/EU//PERSEUS
Formato:  application/pdf
Fonte:  Progress In Oceanography (0079-6611) (Pergamon-elsevier Science Ltd), 2015-11 , Vol. 138 , P. 431-447
Direitos:  2015 Elsevier Ltd. All rights reserved


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