小地老虎的交配行为和能力

在温度为(25±1)℃、相对湿度为70%±7%、光周期(L∶D)为14∶10h的条件下对小地老虎Agrotis ypsilon(Rottemberg)的交配行为和能力进行研究。结果表明:成虫在羽化后1d才进行交配。雄蛾和雌蛾都可以多次交配。交配能力受性比的影响很大,当1头雄蛾仅与1头雌蛾相处时,其交配能力低;当1头雄蛾与多于2头的雌蛾在一起时或1头雌蛾与多于2头的雄蛾在一起时,交配能力则显著增加。还讨论了该研究结果应用的可能性。

The mating behavior and ability of the black cutworm moth, Agrotis ypsilon

Mating behavior and ability of the black cutworm, Agrotis ypsilon (Rottemberg) were studied under the laboratory conditions (25±1℃, RH 70%±7%, L14∶D10). The results indicated that moths were not able to mate until one day later after emergence. All male and female moths observed can mate many times, and their mating ability was obviously influenced by the sex ratio. The ability was very low when one male was confined with only one female, but the ability increased significantly when one male was confined with more than two females, or one female confined with more than two males. The implication of the findings to control the back cutworm in fields was discussed.