| Biological investigations of anchovy and some selected fish species caught during the R／V “Bei Dou”surveys 1984—1999 |
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| 引用本文： | ArneJohannessen 金星仕.Biological investigations of anchovy and some selected fish species caught during the R／V “Bei Dou”surveys 1984—1999[J].海洋水产研究,2001,22(4):46-56. |
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| 作者姓名： | ArneJohannessen 金星仕 |
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| 作者单位： | Arne Johannessen 1,Svein A.Iversen 2,Jin Xianshi 3,Li Fuguo 3 1 Institutes of Fisheries and Marine Biology,University of Bergen 2 Institute of Marine Research,Bergen 3 Yellow Sea Fisheries Research Institute,Qingdao |
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| 基金项目： | 国家重点基础研究发展规划项目 (G19990 43 7)资助 |
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| 摘 要： | IntroductionProductivity of an ecosystem may be measured in terms of structure,abundance and growth of keyspecies.Stock structure,measured as age or size composition in a given stock may indicate whether the stockis in a state of growing,stable or declining.Individual growth may be measured in terms of annual growth ofindividual age groups and maturity of key species will similarly reflect the potential of the species to copewith the influence of a changing environment of predators and human i…
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| 关 键 词： | ti鱼 经济鱼类 生物学 生态特征 |
Biological investigations of anchovy and some selected fish species caught during the R/V "Bei Dou" surveys 1984-1999 |
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| Arne Johannessen ,Svein A.Iversen ,Jin Xianshi ,Li Fuguo Institutes of Fisheries and Marine Biology,University of Bergen Institute of Marine Research,Bergen Yellow Sea Fisheries Research Institute,Qingdao.Biological investigations of anchovy and some selected fish species caught during the R/V "Bei Dou" surveys 1984-1999[J].Marine Fisheries Research,2001,22(4):46-56. |
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| Authors: | Arne Johannessen Svein AIversen Jin Xianshi Li Fuguo Institutes of Fisheries and Marine Biology University of Bergen Institute of Marine Research Bergen Yellow Sea Fisheries Research Institute Qingdao |
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| Institution: | Arne Johannessen 1,Svein A.Iversen 2,Jin Xianshi 3,Li Fuguo 3 1 Institutes of Fisheries and Marine Biology,University of Bergen 2 Institute of Marine Research,Bergen 3 Yellow Sea Fisheries Research Institute,Qingdao |
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| Abstract: | The paper deals with growth of Japanese anchovy (Engraulis japonicus) and variations in length by area and maturity of anchovy and some selected fish species obtained during surveys with R/V "Bei Dou" in the Yellow Sea and East China Sea,in 1984-1999.Demersal trawl catch rates for some selected fish species from the same surveys are also included.No density dependent growth in length or weight of anchovy was found.Reduced length at maturity of small yellow croaker was apparent from 1986 to 1994. |
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| Keywords: | Yellow Sea East China Sea Japanese anchovy Trawl catches |
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