光照时间对双尾新小绥螨生长发育及种群参数的影响
Effects of different photoperiods on the development and population parameters of Neoseiulus bicaudus Wainstein
张燕南** 李永涛 蒋珏瑛琪 苏 杰 郭丹丹 张建萍***
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DOI：10.7679/j.issn.2095-1353.2016.006
作者单位：石河子大学农学院, 石河子 832000
中文关键词：光照，捕食螨，害螨，发育历期，生命参数
英文关键词：photoperiods, predatory mites, spider mite, development, life parameters
中文摘要：
为了进一步明确光照时间对双尾新小绥螨Neoseiulus bicaudus Wainstein生长发育的影响。【方法】 在实验室恒温条件下，采用生命表研究方法，研究在不同光照时间下，双尾新小绥螨捕食土耳其斯坦叶螨的生长发育情况。【结果】 双尾新小绥螨在不同光照时间段下均能完成世代周期。在光照时数小于12 h时，从卵发育至成螨的各个发育阶段所需时间均呈缩短趋势，当光照时数大于16 h后各个发育阶段所需的时间又呈增长趋势。产卵期在12L︰12D光照时数下最长为20.74 d，且同其他光照条件均存在显著性差异（P<0.05）。产卵后期、寿命、总产卵量均表现在16L︰8D光照时数下最长，分别为11.93 d、31.05 d和42.4粒。 双尾新小绥螨种群的净增值率（R0）在16L︰8D时达到最大值33.88，在8L︰16D时最低为14.97。【结论】 光照时间在12~16 h范围内最适合双尾新小绥螨生长发育。
英文摘要：
To study the development and reproduction of N. bicaudus. [Methods] The effects of different photoperiods on the development and reproduction of N. bicaudus feeding on T. turkestani, were measured and compared. [Results] N. bicaudus successfully completed its development under all five photoperiods. Developmental duration decreased under photoperiods < 12 h, but increased under photoperiods > 16 h. The oviposition period (20.74 d) was significantly longer under a photoperiod of 12 h (P<0.05). The post-oviposition period, life span and total fecundity were longest under a photoperiod of 16L︰8D (11.93 d, 31.05 d and 42.4 eggs/female, respectively). Photoperiod had no significant effect on the offspring sex ratio. The net reproductive rate (R0) was highest (33.88) under a photoperiod of 16L︰8D, and shortest (14.97) under one of 8L︰16D. [Conclusion] The optimum photoperiod for the development and reproduction of N. bicaudus preying on T. turkestani are between 12 and 16 h.