东海北部鱼类组成特征分析  

The analysis of fish composition pattern in the northern East China Sea

作　　者：李圣法 严利平[2] 李长松[2] 胡芬[2] 

机构地区：[1]华东师范大学河口海岸国家重点实验室,上海200062 [2]中国水产科学研究院东海水产研究所农业部海洋与河口渔业重点开放实验室,上海200090

出　　处：《水产学报》2004年第4期384-392,共9页Journal of Fisheries of China

基　　金：国家专项资助项目(底层生物资源总生物量评估)

摘　　要：利用1997-2000年东海北部(29°30′～33°00′N,122°30′～128°00′E)四个季节的底拖网调查资料,选取生物量占总生物量90％的前27种鱼类,运用聚类分析和多维标度分析法,研究了东海北部鱼类组成的空间格局特征。结果显示东海北部鱼类组成可分为三个群聚类型,即近海群聚、较深海域群聚和外海群聚。近海群聚的主要种类有凤鲚(Coilia mystus)、龙头鱼(Harpadon nehereus)、黄鲫(Setipinna taty)等;较深海域群聚的主要种类有鳀(Engraulis japonicus)、带鱼(Trichiurus japonicus)、日本鲭(Scomber japonicus)、鳄齿鱼(Champsodon capensis)、细条天竺鲷(Apogon lineatus)、发光鲷(Acropoma japonicum)等;而竹(竹夹)鱼(Trachurus japonicus)、星康吉鳗(Conger myriaster)、黄鲷(Taius tumifrons)、水珍鱼(Argentina kgoshimae)、日本海鲂(Zeus fober)、绿鳍马面鲀(Thamnaconus sepremtrionalis)等为外海群聚的主要种类。同时分析了水深、底层温度、底层盐度等环境因子与鱼类群聚的关系,表明影响鱼类群聚的主要环境因子有水深、底层盐度。不同群聚间的种类分布是重叠交错的,并没有明显的群聚边界,但密集分布海域各异,不同群聚的种类组成在不同季节具有一定的持续性,其种类组成保持了相对的稳定。27 fish species, whose biomass was 90 % of the total biomass, were selected from the data collected by bottom trawl survey during 1997 and 2000 in the northern East China Sea (29030' - 33°00'N, 122°30'-128°00' E). By hierarchical cluster analysis and non-metric multidimensional scaling (NMDS), three main fish assemblage styles were identified in the northern East China Sea, which were shallower coastal fish assemblage, deeper coastal fish assemblage and out shelf sea fish assemblage. The dominant species in each assemblage were: shallower coast-Osbeck's grenadier anchovy ( Coilia mystus ), Indian Bombay duck ( Harpadon nehereus ), scaly hairfin anchovy (Setipinna taty ); deeper coastal-Japanese anchovy (Engraulis japonicus ), largehead hairtail ( Trichiurus japonicus ), chub mackerel ( Scomber japonicus ), gap ( Champsodon capensis ), verticalstriped cardinalfish (Apogon lineatus ), lanternbelly (Acropoma japonicum ); and out shelf-Japanese horse mackerel (Trachurus japonicus ), whitespotted conger (Conger myriaster ), golden tai (Taius tumifrons ), smallmouth argentine ( Argentina kgoshimae ), John dory ( Zeus fober ), black scraper ( Thamnaconus septerntrionalis ). The species spatial distributions between different assemblages overlap, with no sharp assemblage boundaries, but there were differences in concentrative area of species among assemblages. In the same assemblage the fish composition remained relatively stable among different seasons. The environmental variables-depth, bottom temperature and bottom salinity - were examined to determine their relationships to fish assemblages, and the depth and bottom salinity was found to be primary variables influencing fish assemblages in the northern East China Sea.

关 键 词：东海北部地区 鱼类组成特征 空间格局 近海群聚 较深海域群聚 外海群聚 聚类分析 多维标度分析法 

分 类 号：Q959.4[生物学—动物学]