温度对美洲斑潜蝇发育、存活和繁殖的影响

探讨了在光照周期为14L?10D、R.H.为70%±5%的恒温(12～35℃)条件下美洲斑潜蝇的发育、繁殖和存活,求得美洲斑潜蝇世代的发育起点温度与有效积温分别为8.77℃和295.69日度,给出了温度与各虫态发育速率间的函数关系。20～27.5℃时存活率较高,死亡主要发生在蛹期,35℃下蛹不能羽化。成虫寿命随温度的升高而缩短;种群增长指数于27.5℃时达到最高。

Effect of temperature on development,survival and reproduction of Liriomyza sativae

This paper studied the development,survival and reproduction of vegetable leafminer (Liriomyza sativae) at eight constant temperatures (12,15,20,25,27.5,30,32.5 and 35℃) with 70%±5% R.H. and 14L?10Dphotoperiod.The initiative development temperature and the available accumulation temperature were estimated to be 8.77℃ and 295.69 day degrees,respectively.The regression equations of development rate with temperature at various immature stages were given.The survival rates at various immature stages were higher at 20～27.5℃.Most of the death occurred at pupal stage,and no pupae could emerge at 35℃.The longevity of the adult decreased with increasing temperature,and the population growth index reached a peak at 27.5℃.