期刊
CONTINENTAL SHELF RESEARCH
卷 31, 期 5, 页码 376-387出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.csr.2010.09.010
关键词
Merluccius merluccius; European hake stocks; Gene flow; Fish connectivity; Fishery genetics; Assessment data
类别
资金
- Xunta de Galicia [MERCAGAL-PGIDIT06RMA007001CT]
- Xunta de Galicia (Spain)
- [INCITE09E2R310105ES]
Systematic genetic analyses of fish populations allow the testing of temporal stability in their genetic structures and better understanding their pattern of connectivity. In this study the pattern of gene flow between the two Atlantic stocks of the European hake has been examined for the period 2000-2002. Present analyses indicate that a large genetic homogeneity existed among all Atlantic populations in that period, and that a systematic grouping occurred between Porcupine Bank samples and Cantabric ones. This scenario is congruent with an inter-annual gene flow from central grounds of the northern stock (Porcupine and Great Sole) to Iberian grounds inhabited by the southern stock. Additionally, estimated migration figures were in agreement with the good recruitments observed in the southern stock after 2003 despite the spawning biomass was at its historical minimum. Altogether these results highlight the central role of Porcupine bank and Great Sole in making sustainable both stocks and advocate the integrative management of this hake fishery by means of a multidisciplinary assessment. (C) 2010 Elsevier Ltd. All rights reserved.
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