温度对葡萄十星瓢萤叶甲交配行为的影响

在室内恒定条件下,测定了3种不同温度对葡萄十星瓢萤叶甲Oides decempunctata Billberg成虫的交配节律、交配次数和交配持续时间的影响,结果表明:(1)葡萄十星瓢萤叶甲成虫在白天各时间段均有发生,但只有25℃下才出现有交配的高峰(14:00和18:00),过低或过高的温度均无明显的高峰期出现.(2)每日平均交配次数随着温度的升高呈上升趋势,然而,每日耗费在交配中的总时长在25℃时达到最大(227.74 min),过低或过高的温度均使其受到抑制.(3)交配持续时间在22℃下最长(146.84 min),在28℃下最短(42.83 min),表现出随着温度的升高呈缩短的趋势.

Effects of Temperatures on Mating Behaviors of Grape Leaf Beetles,Oides decempunctata Billberg(Coleoptera: Chrysomelidae)

The Circadian copulation rhythm,number of mating and copulation duration of the grape leaf beetle,Oides decempunctata Billberg,under different temperature(22℃、25℃、28℃) were investigated in laboratory conditions.The results showed that(1) the mating occurred throughout the day time(7AM-19PM),however,the peaks of mating appeared at 14:00 PM and 18:00 PM only under 25℃,and the mating didn’t occur under lower(22℃) or higher(28℃) temperature;(2) the daily average number of mating increased with the increase in temperatures,while the total daily mating time achieved maximum in 25℃(227.74min),and the total daily mating time were restrained under lower(22℃) or higher(28℃) temperatures;(3) among 3 gradients of temperatures,the copulation duration was the longest under 22℃(146.84min),and the shortest under 28℃(42.83min),which showed the trends that the copulation duration was decreased with the increase in the temperature.