温种组成,其中鲈形目种类最多(37 种) ,其次是鲉形目(7 种) 和鲽形目(6 种) 。 春季优势种包括矛尾鰕虎鱼(Chaeturichthys stigmatias) 、鲱衔(Callionymus beniteguri) 、 短 吻 红 舌 鳎 (Cynoglossus joyneri) 、 矛 尾 复 鰕 虎 鱼 (Synechogobius hasta) 和 方 氏 云 鳚 (Enedrias fangi) ,其渔获量占总渔获量的 70.8%;夏季包括矛尾鰕虎鱼、斑鰶(Konosirus punctatus) 、鲱衔和短吻红舌鳎,占总渔获 量的 68.1%;秋季包括矛尾鰕虎鱼、赤鼻棱鳀(Thrissa kammalensis) 、鳀(Engraulis japonicus) 、青鳞小沙丁鱼(Sardinella zunasi) 、斑 鰶、小黄鱼(Larimichthys polyactis) 和矛尾复鰕虎鱼,占总渔获量的 87.1%。 平均单位时间渔获量存在显著季节变化,以秋季最高

variation in the population dynamics of snailfish Liparis tanakae in the Yellow Sea.

Based on the bottom trawl survey data by R / V " Beidou冶 from September, 2006 to May, 2007 in the sections of the central and southern Yellow Sea, fish community structure, community diversity, biomass distribution by catch per hour and their relationships with environmental variables were studied. A total of 109 species were collected, all of which were Osteichthyes, belonging to 86 genera, 57 families, and 16 orders. The most species鄄rich orders were Perciformes (45 species) , followed by Scorpaeniformes (12 species) , Clupeiformes (10 species) , and Pleuronectiformes (10 species). The fish catch was dominated by warm water species and warm temperate species, including few cold temperate species. The proportion of species ecotypes in fish catch varied with survey time, e.g., warm water species dominated the catch in March 2007 and warm temperate species dominated the catch in September 2006. The majority of species were small鄄sized pelagic (e.g., Engraulis japonicus, Setipinna taty) and low鄄valued demersal species (e. g., Lophius litulon, Liparis tanakai) ,

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