希威社 姐妹花
高慧良，黄六一，李 龙，任一平，徐宾铎，唐衍力，刘长东，程 晖 （中国海洋大学水产学院，山东 青岛 266003）
摘记：须子网是黄河口海区诳骗较广的陷坑类网具之一。为养护和处置黄河口海区渔业资源，对该海域春季和夏令须子网渔获物构成进行分析。2013年5月和2014年8月对东营黄河口海区进行了3次导陷插网网具须子网的渔获物造访，接收相对垂死性指数（IRI）、种类丰富度指数和Sorensen 通常性通盘对造访数据进行了分析。效果表示，春季和夏令须子网拿获渔获物认为45种；春季和夏令渔获物上风种（IRI>1000）永诀为7种和9种，共同上风种为2种；春季和夏令渔获种类的Sorensen通常性通盘Ss为0.39，该海域春季和夏令的渔获物丰富度指数(R)、Shannon-Wiener各种性指数(H)、均匀度指数(J) 永诀为15.81和2.91、0.51 和11.26、2.17 和0.43；春季和夏令平均每网渔获量和余数永诀为55.04 kg和8 766尾、50.56 kg和3390尾。造访效果标明，春季生物群落上风采较夏令上风高，使用须子网，其渔获物构成羼杂、渔获幼体构成比例较高，旷日永久不利于资源的繁衍保护，对黄河口渔业资源顺心较为严重。调研效果可为我国黄河口海区渔具处置以及渔业资源的可执续发展与处置提供科学参考。
枢纽词：须子网；渔获物构成；生物各种性；黄河口海域
天水在线Analysis on the catch composition of XuZi net at Yellow River estuary in spring and summer
GAO Huiliang， HUANG Liuyi， LI Long， REN Yiping， TANG Yanli， LIU Changdong， CHENG Hui (Fisheries College， Ocean University of China， Qingdao 266003， China)
Abstract: XuZi net is one kind of the trap nets that are widely used in Yellow River estuary area. For the better conservation and management of fishery resources in Yellow River estuary area， the species compositions of catches with XuZi nets in spring and summer were analyzed. Based on the data obtained from three investigations into the catch composition of Yellow River estuary with XuZi nets in May 2013 and August 2014， indices of Sorensen similarity (SS)， species richness (R)， Shannon2-Wiener diversity (H)， evenness (J) and index of relative importance (IRI) were calculated. The results showed that there were altogether 45 species in the catches of spring and summer; the numbers of dominant species (IRI>1 000) in spring and summer were respectively 7 and 9， with 2 species in common; the Sorensen similarity coefficient between the catch compositions of spring and summer was 0.39; the indices of R， H and J of the catches were respectively 15.81， 2.91， and 0.51 in spring and 11.26， 2.17， and 0.43 in summer; and the average catch biomass and catch weight were 8766 ind/net and 55.04 kg/net in spring， and 3390 ind/net and 50.56 kg/net in summer. The results showed that the biodiversity level in spring was higher than that of summer， and in spring， the catch composition of XuZi net was complex and with a high percentage of young individuals， which would exert adverse effects on fishery resources protection in the long run. The data provided a scientific reference for fishing gear management and sustainable fishery development in Yellow River estuary area.
Key words: XuZi net; composition of catches; biodiversity; Yellow River estuary希威社 姐妹花