不同叶位杨树叶片对杨扇舟蛾发育和繁殖的影响

Effects of Different Positions of Leaves from Poplar Branches on Development and Reproduction of Clostera anachoreta

[目的]明确杨扇舟蛾对杨树不同叶位叶片的取食选择性及其发育和繁殖适合度的影响。[方法]以1年生杨树枝条的第1、3、5、7叶位叶片室内饲养杨扇舟蛾初孵幼虫至化蛹,观测其对杨扇舟蛾幼虫发育和繁殖适合度的影响。[结果]不同叶位叶片对杨扇舟蛾幼虫历期(27℃下14 d)、蛹历期(6 d)和产卵前期(17 d)无明显影响,但对存活率曲线、蛹质量和单雌产卵量具有显著影响,第3叶位叶片饲养的杨扇舟蛾具有较高的存活率、较小的蛹重和较低的繁殖力。[结论]试验结果为阐释杨扇舟蛾发生的机理和有效控制杨扇舟蛾提供了理论依据。

[ Objective ] The aim was to understand feeding selectivity of Clostera anachoreta to different positions of leaves from poplar branches and its effects on development and reproduction. [ Method] Through rearing newly hatched larvae to pupation by the lth, 3th, 5th, 7th leaf position of 1 year old poplar branches, and effects of different positions of leaves on development and reproduction of Clostera anachoreta were studied. [ Result] The leaves of different leaf position had made no significant differences to the developmental duration of larvae （27 ℃, 14 d） , pupa duration （6 d） , and pre-oviposition period （17 d） of Clostera anachoreta. But it had significant effect on survival curve, pupal mass and egg number per female. And larvae reared with the leaves of 3th leaf position showed the higher survival rate, smaller pupa weight and smaller fecundity. [ Conclusion] The results provide theoretical basis for occurrence mechanism and control of Clostera anachoreta.