变温和光周期对加州新小绥螨性别分化及繁殖的影响

本研究以朱砂叶螨为猎物，研究了在23℃/13℃、26℃/16℃、29℃/19℃、32℃/22℃和35℃/25℃五个变温和14L：10D、12L：12D和10L：14D三个光周期共15个组合对加州新小绥螨性比分化及繁殖的影响。明确32℃/22℃的变温与光周期14L：10D组合的雌性比最高，为78.38%。其次为32℃/22℃的变温和光周期10L：14D的组合，为77.32%；32℃/22℃的变温和光周期10L：14D组合的每雌平均产卵量最高为91.12，显著高于32℃/22℃的变温和光周期14L：10D的每雌平均产卵量43.55。32℃/22℃的变温和光周期10L：14D组合利于加州新小绥螨种群发展。该研究结果为规模繁育加州新小绥螨，实现种群快速增长提供了重要理论依据。

Effects of Fluctuating Temperature and Photoperiod on Sex Differentiation and Reproduction of Neoseiulus californicus (Parasitiformes:Phytoseiidae)

With Tetranychus cinnabarinus as the prey, sex differentiation and reproduction of Neoseiulus californicus were examined under combinations of 5 fluctuating temperatures (23/13, 26/16, 29/19, 32/22, and 35/25℃, temperatures in photophase/scotophase) and 3 photoperiods (14L:10D, 12L:12D, 10L:14D). A significant higher female rate (78.4%) was detected at the condition of 32/22℃ and 14L:10D. The second higher female rate (77.3%) was observed from the combination of 32/22℃ and 10L:14D. However, the highest fecundity (91.1 eggs/female) occurred in the combination of 32/22℃ and 10L:14D, which is significantly higher than that (43.55) in the combination of 32/ 22℃ and 14L:10D. In conclusion, the combination of 32/22℃ and 10L:14D is most beneficial to the reproduction of N. californicus. This finding serves to support the mass breeding of N. californicus.