作　　者： ; ; ; ; ;

机构地区： 华南农业大学资源环境学院昆虫学系

出　　处： 《应用生态学报》 2006年第7期1250-1253,共4页

摘　　要： 以米蛾卵为繁育寄主，组建了玉米螟赤眼蜂在26、29、32和35℃下的实验种群生命表，探讨了高温对玉米螟赤眼蜂生长和生殖的影响．结果表明，高温32℃-35℃对玉米螟赤眼蜂各虫态的生长发育有明显的抑制作用．卵．幼虫的存活率在26℃和29℃分别为94．2％和88．6％，32℃时下降至80．2％，而35℃时仅为53．2％，蛹的存活率也表现出相应的下降趋势．玉米螟赤眼蜂羽化后12h内的抱卵量、体长及卵粒大小随温度的升高而减少或变小．26℃时，玉米螟赤眼蜂羽化后0-12h的抱卵量为37．9粒，随着温度的升高，抱卵量急剧下降，29℃、32℃和35℃的抱卵量分别为29．6、21．6和13．7粒，在26℃及29℃时，所有雌蜂均能进行正常交配和产卵，32℃时有6．7％的个体不产卵，至35℃时，则有60％的个体不能进行正常的生殖活动。 In this paper, the life tables of laboratory Trichogramma ostriniae population reared on Corcyra cephalonica eggs at 26 ℃, 29 ℃, 32 ℃ and 35 ℃ were constructed, and the effects of high temperature on the development and reproduction of this population were analyzed. The results showed that high temperature （32 ℃ - 35 ℃ ） greatly affected the development of T. ostriniae. The egg-larva survival rate was 94. 2% at 26 ℃ and 88. 6% at 29 ℃, and decreased to 80. 1% at 32 ℃ and 53.2% at 35 ℃. The pupa survival rate also descended with the raise of temperature. The egg load and the body- and egg sizes of newly emerged female wasps were negatively responded to temperature. 12 h-old adult female had an egg load of 37.9, which was decreased with the raise of tempera- ture, and about 29.6, 21.6 and 13.7 mature eggs were found at 29 ℃, 32 ℃ and 35 ℃, respectively. All females could complete their normal copulation and oviposition at 26 ℃ and 29 ℃, but about 6.7% and 60% females could not reproduce at 32 ℃ and 35 ℃, respectively.

关 键 词： 玉米螟赤眼蜂 高温 繁殖力 生命表

领　　域： [生物学]