短时高低温胁迫对南亚实蝇生长发育及繁殖的影响

南亚实蝇Bactroceratau(Walker)是一种重要的入侵性农业害虫.主要分布在我国云南、广东、四川和河南等地,南亚实蝇的为害严重降低了蔬菜和水果的品质.短时极端温度是影响南亚实蝇种群的重要因子.为了明确短时高低温对南亚实蝇的影响,通过选择12 h的短时低温(-4、0、4、8℃)及12 h的短时高温(34、38...

Effects of short-term high and low temperature on the development and reproduction of Bactrocera tau (Walker)

Bactrocera tau(Walker)is an important agricultural invasive insect pest.It is mainly distributed in Yunnan,Guangdong,Sichuan and Henan provinces of China.The serious damage of B.tau can reduce the quality of vegetables and fruits.The short-term extreme temperature is an important factor affecting the population of B.tau.In order to determine the effect of short-term high and low temperature on the growth,development and reproduction of B.tau,the effects of short-term low temperature(-4,0,4,8℃)for 12 hours and short-term high temperature(34,38,42,46℃)for 12 hours were studied under laboratory conditions.The results showed that the survival rates of all stages gradually decreased with the increase and decrease of the treatment temperature after short-term high and low temperature treatments.The developmental period,preoviposition period,single female oviposition,longevity and the sex ratio of offspring were significantly affected by the treatments.The developmental period,sex ratio and preoviposition period gradually increased with increasing/decreasing temperature;the longevity of male and female adults initially increased and then decreased,while the single female oviposition gradually decreased with increasing treatment temperature.Meanwhile,their longevity gradually decreased and the single female oviposition increased and then decreased with decreasing treatment temperature.Overall,the short-term high and low temperature had negative effects on the growth,development and reproduction of B.tau.This could slightly promote the reproduction of females in a certain range of short-term low temperature(8℃).