摘要
作者通过整理１９９４年至１９９６年期间，在江西采集的２８２只淡水蚌的调查资料，发现寄生于淡水蚌内的螨主要有三种：丫纹蚌螨〈Ｕｎｉｏｎｉｃｏｌａ（Ｐａｒａｓｉｔａｔａｘ）ｙｐｓｉｌｏｐｈｏｒａ〉、弯弓蚌螨（Ｕｎｉｏｎｉ－ｃｏｌａ（Ｐａｒａｓｉｔａｔａｘ）ａｒｃｕｔａｔａ〉与今村蚌螨〈Ｕｎｉｏｎｉｃｏｌａ（Ｐｅｎｔａｔａｘ）ｉｍａｍｕｒａｉ〉．其中以寄生于背角无齿蚌〈Ａｎｏｄｏｎｔａｗｏｏｄｉａｎａ〉内的丫纹蚌螨分布密度（２．５３±０．２３）最大，寄生率（８０％）最高，其主要聚集于蚌的鳃表面，聚集密度为３．３６±０．５４，并且发现雌雄螨的聚集密度悬殊较大，雌雄螨的比例近似为６．５∶１．同时，本文还对丫纹蚌螨在背角无齿蚌内的分布型进行了研究，结果表明，其分布型（ｐ＞０．
freshwater bivalves were collected from Jiangxi in 1994 to 1996,Three species of mites were found in freshwater bivalves and were dominant,as following:Unionicola (Parasitatax) ypsilophora,Unionicola (Parasitatax) arcuata and Unionicola (Pentatax) imamurai.The density of Unionicola ypsilophora was maximm (2.53±0.23) in Anodonta woodiana,with a 80% level of parasitization;Unionicolid mites showed a preferred location with respect to the gill surface,with a mean density of 3.36±0.54 (mites/mussel);The density of female mites was significantly different from those of male,the sex ratio approached 6.5∶1 (female/male).And the paper deals with a distribution pattern of Unionicola ypsilophora in Anoodonta woodiata,distribution pattern of Unionicola ypsilophora in Anodonta woodiata,it was correlated with the Negative biomial distribution (P>0.05).
出处
《南昌大学学报（理科版）》
CAS
1996年第3期253-256,共4页
Journal of Nanchang University(Natural Science)
基金
江西省青年基金
关键词
蚌螨
优势种
分布型
生态学
unionicolid mites,Jiangxi Province,dominant,distribution pattern
