新害虫枇杷潜蛾的生物学特性及控制研究(英文)

Biology and Control of Loquat Shoot Borer,Lyonetia eriobotryae(Lepidoptera:Lyonetiidae),An Invasive Pest of loquat in Yunnan

2005，2006年对枇杷潜蛾（Lyonetia eriobotryae）的生物学特性进行了研究，结果发现其在云南终年发生，全年的高峰发生期在7～10月，冬季发育缓慢但不越冬；枇杷潜蛾天黑后开始产卵，雌成虫用产卵器刺破新梢嫩叶下表皮将卵产于叶肉及表皮之间，卵单产，2～4d后开始孵化并在叶肉内取食，从梢尖到术质部较为坚硬的部分都是其蛀食范围，老熟幼虫出梢后吐丝下垂在叶片下作“H”型茧化蛹：在15～30℃条件下卵、幼虫、蛹、成虫的发育历期分别为2～4d，17～26d，5～12d，3～10d，完成1代需要27～52d。药剂实验表明90％杀虫丹、20％灭扫利对枇杷潜蛾具有很高的防效，开始施药适期为4～5月。比较全面的研究了枇杷潜蛾的生物学特性，并给出了在当地比较可行的防治方案。

Bionomics, nature of damage, seasonality and efficacy of insecticides in controlling loquat shoot borer, Lyonetia eriobotryae, an invasive pest were investigated through field experiments in Mengzi County, Yunnan Province, China. Insect laid eggs just underneath the epidermis of loquat leaves and after 2 ~ 4 days, the newly hatched larvae mined the leaves before reaching shoot where it bored into the cortex until full grown and ready for pupation. As a result of larval feeding, the shoot wilted and failed to bear flowers and fruits. Full-grown larvae came out of wilted shoot and pupated in a silken cocoon on the surface of lower leaves. Under room conditions within temperature range of 15 to 30 ℃, egg, larval, and pupal periods lasted 2 -4, 17 - 26, and 5 - 12 days, respectively. The longevity of adults was 3 - 10 days. One generation was completed in 27 - 52 days depending upon temperature. Pest damage and population abundance reached the peak during July to October. A sex pheromone of Lyonetia clerkella also attracted L. eriobotryae males. Monosultap and fenpropathrin applied at the interval of 8 -10 days could give an adequate control to the pest for 2 - 3 weeks.