昆虫学报 ›› 2017, Vol. 60 ›› Issue (5): 553-561.doi: 10.16380/j.kcxb.2017.05.007

• 研究论文 • 上一篇    下一篇

母代越冬经历对中华通草蛉子代发育与繁殖的影响

陈珍珍#, 刘力源#, 刘韶业, 郭奇奇, 许永玉*   

  1. (山东农业大学植物保护学院, 山东泰安 271018)
  • 出版日期:2017-05-20 发布日期:2017-05-20

 Effects of maternal overwintering experience on offspring development and reproduction in Chrysoperla sinica (Neuroptera: Chrysopidae)

CHEN Zhen-Zhen#, LIU Li-Yuan#, LIU Shao-Ye, GUO Qi-Qi, XU Yong-Yu*   

  1. (College of Plant Protection, Shandong Agricultural University, Tai′an, Shandong 271018, China)
  • Online:2017-05-20 Published:2017-05-20

摘要: 【目的】为探究母代越冬经历对中华通草蛉Chrysoperla sinica子代生长发育、滞育诱导和繁殖能力的影响,【方法】采用年龄-龄期两性生命表方法研究了越冬初期(11月份)、越冬中期(1月份)和越冬末期(3月份)中华通草蛉自然越冬成虫其子代种群在25℃、光周期15L∶9D和9L∶15D条件下的生长发育及种群动态变化。【结果】长光周期(15L∶9D)下不同越冬时期对中华通草蛉子代的成虫前期并没有显著性影响,但越冬中期的子代成虫历期显著短于其他两个越冬时期;产卵前期以越冬中期子代显著高于其他两个越冬时期;单雌平均产卵量则以越冬末期显著高于越冬初期和越冬中期;内禀增长率、周限增长率和净增殖率均以越冬末期子代最高;平均世代周期以越冬中期子代最长。短光周期(9L∶15D)下中华通草蛉子代成虫历期以越冬末期最长,越冬初期次之,越冬中期最短;子代产卵前期以越冬初期最长,越冬中期次之,越冬末期最短;产卵历期以越冬末期最长;单雌平均产卵量以越冬末期最高;子代生命表参数变化趋势与长光照处理一致;子代种群存活率以越冬末期最高,越冬初期次之,越冬中期最低。【结论】相比越冬初期和越冬中期,越冬末期中华通草蛉子代种群表现出较强的增殖能力;短光周期可诱导中华通草蛉成虫滞育,产卵前期的长短可代表滞育深度,母代越冬经历对子代种群滞育诱导有一定的削减作用,母代越冬时间越长,削减作用越明显。

关键词: 中华通草蛉, 母代经历, 越冬时期, 光周期, 子代发育, 年龄-龄期两性生命表

Abstract: 【Aim】 This study aims to investigate the effects of maternal overwintering experience on offspring growth and development, diapause induction and reproductive capability in the green lacewing, Chrysoperla sinica. 【Methods】 The age-stage two-sex life table method was used to study the development and population dynamic change of C. sinica offsprings in the early overwintering stage (November), mid overwintering stage (January) and late overwintering stage (March) at 25℃ under two photoperiod regimes (15L∶9D and 9L∶15D). 【Results】 The pre-adult period of C. sinica offspring under long photoperiod (15L∶9D) had no significant differences between different overwintering periods, but the adult duration was significantly shorter in the mid overwintering stage than in the other two overwintering stages. The pre-oviposition duration of offspring under long photoperiod was significantly longer in the mid overwintering stage than in the other two overwintering stages, and the fecundity was significantly higher in the late overwintering stage than in the other two overwintering stages. The intrinsic rate (r), the finite rate of increase (λ) and the net reproduction rate (R0) of offspring population under long photoperiod were the highest in the late overwintering period, and the mean generation time was significantly longer in the mid overwintering stage than in the other two overwintering stages. The adult duration under short photoperiod (9L∶15D) was significantly longer in the late overwintering stage than in the other two overwintering stages. The pre-oviposition duration of offspring under short photoperiod was the longest in the early overwintering stage, moderate in the mid overwintering stage and the shortest in the late overwintering stage. The longest oviposition period and the highest fecundity were found in the late overwintering stage under short photoperiod. The change trends of the population parameters under short photoperiod were the same as those under long photoperiod. The survival rate of C. sinica offspring under short photoperiod was the highest in the late overwintering stage, moderate in the early overwintering stage and the lowest in the mid overwintering stage. 【Conclusion】 The offspring of C. sinica has the highest reproductive capability in the late overwintering stage among the three overwintering stages. Short photophase could induce adult diapause, and the pre-oviposition length may represent the depth of diapause. The maternal overwintering experience can weaken the induction of offspring diapause, and the longer the maternal overwintering time, the more obvious the reduction.

Key words: Chrysoperla sinica; maternal experience, overwintering stage, photoperiod, offspring development, age-stage two sex life table