不同地区克氏原螯虾性选择研究  

Sexual Selection of Different Geographic Populations of Procambarus clarkii

作　　者：宋亮[1,2] 韩晓磊[2] 章旭 曹昆[2] 张品 叶元土[1] 徐建荣[2] 

机构地区：[1]苏州大学基础医学与生物科学学院,江苏苏州215123 [2]常熟理工学院生物与食品工程学院,江苏常熟215500

出　　处：《湖北农业科学》2013年第1期155-158,共4页Hubei Agricultural Sciences

基　　金：江苏省海洋与渔业局水产三项工程项目(P2009-19;PJ2011-58);江苏省高校科研成果产业化推进项目(JHZD07-032)

摘　　要：利用体外标记法对来自宁波(NB)、南通(NT)、古里(GL)、大义(DY)和白茆(BM)地区克氏原螯虾(Procambarus clarkii)的性选择行为进行研究。试验中共记录到220对交配虾,其中异地交配的克氏原螯虾186对,占总数的84.55%(P<0.01)。交配虾中雌雄虾体重差在5 g以下和体长差在0～1 cm间的交配对数分别占总数的64.09%和85.00%(P<0.01)。结果表明,克氏原螯虾更趋向于选择异地虾进行交配以减少近亲繁殖,提高其种群的遗传多样性,并且选择个体大小与自身相当的虾完成交配以增加交配的成功率。In vitro labeling was used to detect the sexual selection of five populations of Procambarus clarkii from Ningbo(NB),Nantong(NT),Guli(GL),Dayi(DY) and Baimao(BM).The experiment observed 220 groups of mating redswamp crayfish,including 186 groups that male and female were from different geographic populations,the ratio was 84.55%(P&lt;0.01).The ratio of the weight difference below 5 g and length from 0 to 1 cm respectively were 64.09% and 85.00%(P&lt;0.01) in 220 groups.The results indicated that there was a tendency of P.clarkii choosing different geographic population for spouse to reduce inbreeding and improve genetic diversity of populations;and choosing some populations that had the similar size for spouse to increase the ratio of mating success.

关 键 词：克氏原螯虾(Procambarus clarkii) 性选择 遗传多样性 

分 类 号：S[农业科学]