| 巢湖太湖新银鱼寄生虫调查和食物组成 |
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| 引用本文： | 刘恩生,鲍传和,伍昌俊,王树荣,李洪远,杨启超.巢湖太湖新银鱼寄生虫调查和食物组成[J].淡水渔业,2009,39(1). |
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| 作者姓名： | 刘恩生 鲍传和 伍昌俊 王树荣 李洪远 杨启超 |
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| 作者单位： | 1. 安徽农业大学动物科技学院,合肥,230036
2. 巢湖渔业管理局,安徽巢湖,238080 |
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| 基金项目： | 巢湖渔业管理局基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 于2006年11月和2007年8月、9月、11月在巢湖5个采样点分别进行了4次调查,研究了太湖新银鱼(Neosalanx tangkahkeii taihuensis Chen)的寄生虫种类、感染率、感染强度、食物组成等指标。结果显示:巢湖的太湖新银鱼感染的寄生虫是双线绦虫,感染率8月份为(57.14±53.45)%,9月份为(66.67±47.76)%,两月平均感染率为(65.22±48.15)%;感染强度8月份为(0.71±0.76)个/尾,9月份为(1.59±1.80)个/尾,两月平均感染强度为(1.46±1.71)个/尾。桡足类是太湖新银鱼的主要食物,在8月份食物中平均个数组成比例为(66.32±11.85)%,出现率为100%;在9月份食物中平均个数组成比例为(57.86±31.00)%,出现率为87.18%。
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| 关 键 词： | 巢湖 太湖新银鱼(Neosalanx tangkahkeii taihuensis Chen) 双线绦虫(Digramma Cholodkowsky) 食物组成 桡足类 |
Investigation on the Parasite of Neosalanx tangkahkeii taihuensis Chen in Lake Chaohu |
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| LIU Ens-heng,BAO Chuan-he,WU Chang-jun,WANG Shu-rong,LI Hong-yuan,YANG Qi-chao.Investigation on the Parasite of Neosalanx tangkahkeii taihuensis Chen in Lake Chaohu[J].Freshwater Fisheries,2009,39(1). |
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| Authors: | LIU Ens-heng BAO Chuan-he WU Chang-jun WANG Shu-rong LI Hong-yuan YANG Qi-chao |
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| Institution: | LIU En-sheng1,BAO Chuan-he1,WU Chang-jun2,WANG Shu-rong2,LI Hong-yuan2,YANG Qi-chao1(1.Anhui Agricultural University,Hefei 230036,2.Lake Chaohu Fishery Administer Bureau of Anhui Province,Caohu,Anhui 238080) |
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| Abstract: | For the purpose of analyzing the reasons of the decrease of ice fish catches,the parasite species,the infected rate,the infected intensity and the diet content of Neosalanx tangkahkeii taihuensis Chen were studied during November in 2006 and from August to November in 2007.Results were as follows:the parasite belonged to Digramma Cholodkowsky;the infected rate reached(57.14±53.45)% in August and(66.67±47.76)% in November;the average infected rate was(65.22±48.15)%;the infected intensity reached(0.71±0.76)individuals per individual fish in August and(1.59±1.80) per individual fish in November.N.tangkahkeii taihuensis Chen mainly fed on Copepoda which accounted for(66.32±11.85)% of individual composition in August and(57.86±31.00)% in November.The apperance rate of Copepoda in the fish diet was 100% in August and 87.18% in November. |
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| Keywords: | Lake Chaohu Neosalanx tangkahkeii taihuensis Chen Digramma Cholodkowsky diet content Copepoda |
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