夏季西北太平洋公海秋刀鱼渔场浮游动物数量分布初步研究.pdfVIP

第17卷第1期 上 海 水 产 大 学 学 报 Vol_17．No．1 2008年1月 JOURNAL OF SHANGHAI FISHERIES UNIVERSITY Jan．．2o08 文章编号：1004—7271(2008)01—0118—05 · 研究简报· 夏季西北太平洋公海秋刀鱼渔场 浮游动物数量分布初步研究 朱清澄，马伟冈9，刘 昊，夏 辉，刘 瑜 (上海水产大学海洋学院，上海 200090) 摘 要：根据2005年7月一10月在北太平洋150。E一158。56 E、42。34 N一46。25 N进行秋刀鱼资源探捕所获 得的浮游动物样本资料的分析、鉴定，在15个站点的海洋浮游动物样本中，测得甲壳纲的桡足类、端足类、糠 虾类、磷虾类，毛颚类、腔肠动物以及被囊动物等的代表种。其中桡足类占绝对优势，隶属于1目4科5属8 种。总浮游生物量分布范围为136～1 848 mg／m ，均值为865．6 mg／m 。 关键词：浮游动物；数量分布；北太平洋；秋刀鱼；渔场 中图分类号：S 932．2 文献标识码：A Study on distribution of zooplankton in Pacific saury (Cololabis saira)fishing ground of the North Pacific Ocean in summer ZHU Qing—cheng，MA Wei—gang，LIU Hao，XIA Hui，LIU Yu (Marine College of Shanghai Fisheries University，Shanghai 200090，China) Abstract：Zooplankton，the animal form of plankton，small floating or weakly swimming animals that are transported with the water currents，includes protozoa，small crustaceans，jellffish and woYnls．Zooplankton feed on phytoplankton，making them the second link in the marine food chain．Zooplankton then are eaten by kril1．fish and larger crustaceans．The investigation fishing of Pacific saury(Cololab~saira)resources was ca ed out in the North Pacific Ocean(150。E一158。56 E，42。34 N一46。25 N)from July to October，2005． Based on the sample analysis and identification of zooplankton samples，we have obtained representative species of Copepoda，Amphipoda，Mysidacea，Euphausiacea of Crustacea，Chaetognatha，Coelentera and Tunicata in the zooplankton samples among 15 sites．Copepoda were dominant absolutely，member of one order．four families．five clams and eight species．The quantitative distribution range of zooplankton is 136—1 848 mg／m ．the average value iS 865．6 m