摘要
在敏感的虫龄内,松毛虫对短光周的反应,随着幼虫发育进度的不同而不同。初龄对短光周最敏感,2龄开始减弱,到4龄时,幼虫基本上就丧失了对短光周的反应。在脱皮时,幼虫对短光周刺激的反应较明显,在两次脱皮之间,幼虫的反应较弱。短光周处理时间越长,幼虫在3～4龄时进入滞育的比率也越高,这可能与昆虫体内保幼激素含量的变化有关。
The response of photoperiodic diapause of Dendrolimus spp. varies with the larval development during its sensitive stages. The larvae have the strongest sensitivity to short photoperiods in the first instar and start to decrease in the second instar, and almost lost the sensitivity in the fourth instar. The larvae show higher sensitivity to shortday cycles in moulting stage. The longer the treatment received by larvae, the higher the ratio of diapause for the larvae in the third and fourth instars. The relationship between the photoperiodic reaction and the content of juvenile hormone is discussed.
出处
《林业科学研究》
CSCD
北大核心
1991年第1期69-71,共3页
Forest Research
关键词
松毛虫
光周滞育
保幼激素
种群动态
Dendrolimus spp.
photoperiodic diapause
juvenile hormone
