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dc.contributor.authorDomínguez-Petit, Rosario-
dc.contributor.authorKorta, María-
dc.contributor.authorSaborido-Rey, Fran-
dc.contributor.authorMurua, Hilario-
dc.contributor.authorSaínza, María-
dc.contributor.authorPiñeiro, Carmen G.-
dc.date.accessioned2012-01-11T13:35:49Z-
dc.date.available2012-01-11T13:35:49Z-
dc.date.issued2008-
dc.identifier.citationJournal of Marine Systems 71(3-4): 260-278 (2008)-
dc.identifier.urihttp://hdl.handle.net/10261/44157-
dc.description.abstractEuropean hake (Merluccius merluccius) female size at maturity is estimated on an annual basis for Bay of Biscay and Galician coast, which are parts of the distribution of the Northern and Southern stocks, respectively. Clear trends in this reproductive parameter are observed along the time series and the potential factors affecting these trends have been investigated. Total biomass, different indexes of SSB, age diversity index, fishing mortality at age, NAO winter index, upwelling index and temperature were included in multiple regressions models to assess the relative importance of each of them on shifts in size at maturity. Bay of Biscay and Galician coast hake have followed different evolution in patterns of changes in size at maturity. In Bay of Biscay, a steadily decline of 15 cm has been observed from 1987 to 2004, which is well predicted by fishing mortality and age diversity, but also the environment may have played an important role. However, on the Galician coast a drastic decline of 16 cm from 1980 to 1988 was followed by a rapid increase in size at maturity during the next 10 years to original values and a stable period in the last 6 years. Decreasing biomass may explain the decline in size at maturity in the first period. However, total biomass and spawning biomass declined even during the period when size at maturity increased, which is contrary to compensatory theory. Shifts in environmental regime, NAO and upwelling, may have contributed to a decelerated growth during this period that might explain the later maturation.es_ES
dc.description.sponsorshipEuropean Commission (Q5RS-2002-01825)es_ES
dc.language.isoenges_ES
dc.rightsopenAccesses_ES
dc.subjectSize at sexual maturityes_ES
dc.subjectGalician Coastes_ES
dc.subjectPopulation structurees_ES
dc.subjectBay of Biscayes_ES
dc.subjectEnvironmental effectses_ES
dc.subjectGadoid fisherieses_ES
dc.subjectHakees_ES
dc.subjectMerluccius merlucciuses_ES
dc.titleChanges in size at maturity of European hake Atlantic populations in relation with stock structure and environmental regimeses_ES
dc.typeArtículoes_ES
dc.identifier.doi10.1016/j.jmarsys.2007.04.004-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jmarsys.2007.04.004-
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