中国媒介生物学及控制杂志

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孑孓的龄期对武昌罗索线虫感染率的影响

王国秀; 徐迎焱   

  1. 华中师范大学生物系 武汉430070
  • 出版日期:1995-08-20 发布日期:1995-08-20

Effect of Culex pipiens quinquefasciatus(Diptera:Culicidae)Age on lnfection Rate of Romanomermis wuchangensis(Nematoda:Mermithidae)

Wang Guo-Xiu Xu Ying-yan   

  1. Department of Bilogy,Central China Normal University ,Wuhan,430070
  • Online:1995-08-20 Published:1995-08-20

摘要: 在同一温度条件上,武昌罗索线虫寄生前期幼虫对致乏库蚊不同龄期幼虫的感染率均不相同。笔者分别对致乏库蚁Ⅰ、Ⅱ、Ⅲ、Ⅳ龄孑孓及蛹在26±1℃条件下进行48h感染实验,感染率分别是58.5%,78%、63.5%和13.5%,以Ⅱ龄孑孓感染率最高,而蛹几乎不被感染。孑孓的龄期对寄生后期幼线虫雌、雄性比无明显规律性影响。

关键词: 昆虫线虫, 致乏库蚊, 生物防治

Abstract: First,second,third,fourth-instar Iarvae and pupae of Culex pipiens quinquefasciatus were infected with Romanomermis wuchangensis and reared at 26±1℃.The average infection rate was 58.5%,78%,63.5%,and 13.5% respectively.The results showed that the infection rate of second-instar larvae was the highest.Theparasites were not found in pupae.The age of the host did not influence the sex ratio of the nematode.