赤眼蜂及其寄主卵低温贮存时间对赤眼蜂繁殖的影响  

Effects of Low Temperature Storage Time of Trichogramma sp.and Its Host-eggs on Reproduction of Trichogramma sp.

作　　者：潘雪红[1] 黄诚华[1] 魏吉利[1] 商显坤[1] 

机构地区：[1]中国农业科学院甘蔗研究中心/广西甘蔗研究所,南宁530007

出　　处：《湖北农业科学》2011年第20期4194-4196,共3页Hubei Agricultural Sciences

基　　金：现代农业产业技术体系建设专项(nycytx-024-01-07);广西农业科学院基金(2007006);广西甘蔗研究所基本科研业务专项(G2009009)

摘　　要：试验比较米蛾卵在4℃(±1℃)低温贮存不同时间后,对赤眼蜂寄生的影响以及赤眼蜂中期幼虫经低温后的表现。结果表明,米蛾卵低温贮存时间越长赤眼蜂对其寄生量越少,米蛾卵经低温贮存15 d,其被寄生量低于新鲜米蛾卵被寄生量的50%;赤眼蜂低温贮存时间越长,其羽化率越低,低温贮存25 d平均羽化率均低于50%。可以认为,在进行赤眼蜂人工生产时,米蛾卵低温贮存时间不宜超过15 d、赤眼蜂低温贮存不宜超过20 d。In order to raise and to apply Trichogramma better,its middle-larvae and host-rice moth eggs were stored in the 4 ℃（±1 ℃） cold conditions.And the parasitizing capacity of Trichogramma on rice moth eggs of different storage time and the behavior of Trichogramma after stored in low temperature were compared.The results showed that the longer rice moth eggs were stored in low temperature,the parasitizing capacity of Trichogramma on them were less.When rice moth eggs were refrigerated for more than 15 days,the parasitizing capacity were less than 50% on fresh eggs.Longer Trichogramma was refrigerated,the emergence rate was less.When middle-larvae of Trichogramma were refrigerated for 25 days,the emergence rate was less than 50%.It could be thought that when in production of Trichogramma,the low-temperature storage time of rice moth eggs and Trichogramma would be no more than 15 days and 20 days respectively.

关 键 词：赤眼蜂 低温 寄生量 羽化率 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]