Changes in size at maturity of European hake Atlantic populations in relation with stock structure and environmental regimes
- 作者：Rosario Domí ; nguez-Petit ; Marí ; a Korta ; Fran Saborido-Rey ; Hilario Murua ; Marí ; a Sainza ; Carmen Piñ ; eiro
- 关键词：Size at sexual maturity ; Population structure ; Environmental effects ; Gadoid fisheries ; Hake ; Merluccius merluccius ; Bay of Biscay ; Galician coast
- 刊名：Journal of Marine Systems
- 出版年：2008
- 期刊代码：46_09247963
- 类别：env
- 出版时间：June 2008
- 卷：71
- 期：3-4
- 页码：260-278
- 文件大小：1215 K
摘要
European 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.