温度对底比斯釉姬小蜂的影响

Effects of Temperature on Chrysocharis pentheus of Vegetable Leafminer

研究了温度对美洲斑潜蝇 (LirimyzasativaeBlanchard)的寄生蜂底比斯釉姬小蜂 (ChrysocharispentheusWalker)主要生命参数的影响 ,结果表明 :在 14～ 34℃的温度范围内 ,底比斯釉姬小蜂各虫态的发育历期随温度的升高而缩短 ,用最优法求得底比斯釉姬小蜂卵、幼虫和蛹的发育起点温度分别为 10 0 6、10 2 9和 8 5 6℃、有效积温为 38 35、5 5 39和 135 6 9日度 .温度对寄生蜂蛹的体长、雌蜂的大小无明显影响 ,但高温和低温对各虫态的存活率影响较大 ,温度升高 ,寄生蜂成虫的寿命缩短 .内禀增长率在 30℃以下随温度的升高而加大 ,超过 30℃则随温度的升高而降低 .

The effects of temperature on Chrysocharis pentheus (Walker), a parameter of vegetable leafminer were studied. The results showed that at the range of 14～34 ℃, the developmental durations of Chrysocharis pentheus decreased with the temperature increasing. The low threshold temperatures of development of C. pentheus eggs, larvae and pupae were 10.06, 10.29 and 8.56 ℃, respectively. The effective accumulated temperature of C. pentheus for egg, larva and pupa stage were 38.35 , 55.39 and 135.69 day degrees. There were no effective influence of temperature on the length of pupae and size of female adults of the parasitoid. However the survival rate of C. pentheus was affected by high and low temperature.