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- W2391675206 abstract "Variations in population characteristics of the Pacific cod(Gadus macrocephalus) in the Yellow Sea were studied using data from seven winter surveys in 1999—2002 and 2007—2009.The results showed that the relative population density increased from 1.0kg/h to 11.7kg/h,and the dominant age increased from 1 year old to 3 years old over the surveyed periods.Moreover,proportions of females at sexual maturity increased from 21.9% to 67.3%.Body weight-length relationships of male and female individuals were insignificantly different(P0.05),and the pooled data for these two periods can be fitted using two exponential functions,i.e.,W = 4.564×10-3 L3.333 in 1999—2002 and W = 1.550×10-2 L2.994 in 2007—2009.Stomach contents analysis showed that crustaceans were the dominant diet in both periods,although with more species foraged by the Pacific cod in recent years.This may have caused an increase in its niche width.The changes in population characteristics were attributed to the climate changes,variations in food web and the fishery management strategies enforced in the Yellow Sea.Compared to the data from 1980s',the distribution of the Pacific cod in the Yellow Sea is still limited and their age structure is simple.Therefore,the Pacific cod stock is sensitive to the changes in fishing intensity and the environment stressors,thus rational protective measures should be developed for the sustainable utilization of this species." @default.
- W2391675206 created "2016-06-24" @default.
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- W2391675206 date "2012-01-01" @default.
- W2391675206 modified "2023-09-23" @default.
- W2391675206 title "INTERANNUAL VARIATIONS IN THE POPULATION CHARACTERISTICS OF THE PACIFIC COD GADUS MACROCEPHALUS IN THE YELLOW SEA" @default.
- W2391675206 hasPublicationYear "2012" @default.
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