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黄海南部和东海小黄鱼资源分布差异性研究
引用本文:林龙山,姜亚洲,刘尊雷,窦硕增,高天翔.黄海南部和东海小黄鱼资源分布差异性研究[J].中国海洋大学学报(自然科学版),2010,40(3).
作者姓名:林龙山  姜亚洲  刘尊雷  窦硕增  高天翔
作者单位:1. 国家海洋局第三海洋研究所,福建,厦门,361005;中国水产科学研究院东海水产研究所,上海,200090;中国海洋大学,山东,青岛,266003
2. 中国水产科学研究院东海水产研究所,上海,200090
3. 中国科学院海洋研究所,山东,青岛,266071
4. 中国海洋大学,山东,青岛,266003
基金项目:国家科技部公益性研究项目,国家基金委"创新研究群体科学基金",中国科学院海洋生态与环境重点实验室开放课题 
摘    要:根据2006年6月~2007年4月黄海南部和东海底拖网监测调查资料,比较分析了2个海域小黄鱼资源密度指数(CPUE)分布、环境因子特征、CPUE与环境因子相关关系的差异.研究结果表明,黄海南部和东海小黄鱼资源密度指数分布除了秋季分布有显著差异之外(t′_((33))=2.69,P=0.011),其余季节分布均无显著差异(春季:t′_((43))=1.68,P=0.104;夏季:t′_((60))=0.31,P=0.756 7;冬季:t′_((43))=1.74,P=0.089);夏季的底层盐度分布和水深分布没有明显差异,在其他季节,黄海南部和东海的底层水温、底层盐度和水深分布等环境特征的差异明显,均达到极显著(P<0.01)或显著(P<0.05)水平;资源密度与环境因子回归分析和AIC模型选择中,2个海域夏季的小黄鱼资源密度受到有显著性影响的环境因子数最多,而冬季受到有显著性影响的环境因子最少.综合推断,黄海南部和东海小黄鱼具有不同空间分布特征和环境分布特征,2个海域的小黄鱼分属于不同种群,但在2个海域交界处有混栖种群.

关 键 词:小黄鱼  资源密度指数  环境因子  黄海南部  东海

Analysis of the Distribution Difference of Small Yellow Croaker Between the Southern Yellow Sea and the East China Sea
LIN Long-Shan,JIANG Ya-Zhou,LIU Zun-Lei,DOU Shuo-Zeng,GAO Tian-Xiang.Analysis of the Distribution Difference of Small Yellow Croaker Between the Southern Yellow Sea and the East China Sea[J].Periodical of Ocean University of China,2010,40(3).
Authors:LIN Long-Shan  JIANG Ya-Zhou  LIU Zun-Lei  DOU Shuo-Zeng  GAO Tian-Xiang
Institution:LIN+Long-Shan1,2,3,JIANG+Ya-Zhou2,LIU+Zun-Lei2,DOU+Shuo-Zeng4,GAO+Tian-Xiang3(1.Third+Institute+of+Oceanographg,SOA,Xiamen+361005,China,2.East+China+Sea+Fisheries+Research+Institute,Chinese+Academy+of+Fishery+Sciences,Shanghai+200090,3.Ocean+University+of+China,Qingdao+266003,4.Institute+of+Oceanography,CAS,Qingdao+266071,China)
Abstract:Based on the data collected from bottom trawl surveys conducted in the East China Sea (ECS) and the southern Yellow Sea (SYC) in June 2006 to April 2007, regional difference of CPUE for small yellow croaker, characteristics of environmental factors in its distribution areas and their relationship between the SYS and ECS were analyzed. The results indicated that there were no significant difference in stock-density index between the SYS and ECS in all seasons except autumn (spring: t′_((43))=1.68,P=0.104;summer: t′_((60))=0.31,P=0.756 7;autumn: t′_((33))=2.69,P=0.011;and winter: t′_((43))=1.74,P=0.089). There were no significant regional difference in bottom salinity and depth of distribution areas between the SYS and ECS in summer, while there were significant regional differences in bottom temperature, salinity and depth between the SYS and ECS in spring, autumn and winter. The relationship between environmental factors and CPUE for small yellow croaker was fitted using multiple linear regression analysis, and the influence factors were screened based on Akaike Information Criterion (AIC). The number of environmental factors which influenced the CPUE of small yellow croaker significantly was most in summer, while it was least in winter. It is suggested that small yellow croaker in the SYS and ECS might belong to two different populations, and there was a mixed population in their adjacent water area.
Keywords:small yellow croaker  stock-density index  environmental factors  southern Yellow Sea  East China Sea
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