光周期对豆天蛾滞育后生物学特性的影响
Effect of post-diapause photoperiod on the biological characteristics of Clanis bilineata tsingtauica Mell
郭明明，李晓峰，赵雪君，陆明星，樊继伟
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DOI：10.7679/j.issn.2095-1353.2023.016
作者单位：连云港市农业科学院，江苏徐淮地区连云港农业科学研究所 连云港 222000
中文关键词：豆天蛾；光周期；滞育；生物学特性
英文关键词：Clanis bilineata tsingtauica Mell; photoperiod; diapause; biological characteristics
中文摘要：
【目的】 豆天蛾Clanis bilineata tsingtauica Mell的滞育特性严重影响其幼虫的高效饲养。为探明光周期对豆天蛾滞育解除的影响。【方法】 以刚被诱导滞育的豆天蛾老熟幼虫为虫源，设置光周期为L0∶D24、L8∶D16、L12∶D12和L16∶D8 4个处理，分析不同光周期处理间豆天蛾滞育后生物学特性的差异。【结果】 光周期对豆天蛾滞育解除后各生物学特性有不同程度影响。随着光照时长逐渐增加，豆天蛾滞育持续时间和蛹期显著缩短（P˂0.05）；而化蛹率、蛹重和蛹长呈下降趋势，其中豆天蛾化蛹率在处理间存在显著性差异（P˂0.05）。豆天蛾羽化率和成虫寿命在处理间没有显著差异，但单雌产卵量在长光照处理下显著减少（P˂0.05）。【结论】 长光照L16∶D8条件有利于缩短豆天蛾滞育持续时间和蛹期，但是也会造成化蛹率、蛹重及单雌产卵量等指标下降。
英文摘要：
[Objectives] To determine the effect of post-diapause photoperiod on the biological characteristics of Clanis bilineata tsingtauica Mell. [Methods] Mature larvae were induced to diapause early and randomly assigned to one of four photoperiod treatment groups (L0∶D24、L8∶D16, L12∶D12 and L16∶D8). Several biological characteristics of each treatment group were then measured and compared. [Results] Post-diapause photoperiod affected different biological characteristics of C. bilineata tsingtauica to different degrees. Exposure to longer day-length significantly reduced the pupation rate, the duration of the diapause and pupal stage and the oviposition rate (P<0.05). Longer day-length also tended to reduce pupal weight and pupal length. Photoperiod had, however, no significant effect on emergence rate or adult longevity. [Conclusion] A longer photoperiod of L16∶D8 reduced the pupation rate, pupal weight, oviposition rate, and the duration of the diapause and pupal stage of C. bilineata tsingtauica.