摘要
针叶小爪螨Oligonychus ununguis(Jacobi)是危害板粟的重要害螨,本文研究了该螨的形态特征和主要生物学特性。发现该螨的发育历期随环境温度增高而缩短,温度降低则延长。经测定,非越冬卵的发育始点温度为11.34℃,卵期有效积温为877日度。平均单雌产卵量为40～45粒,产卵高峰期在雌成螨羽化后第4～8天。同时观察了该螨的寿命、性比和交尾活动及危害习性等。
Oligonychus ununguis (Jacobi) is an important insect pest of chestnut. Themorphological and principal biological characteristics were studied. The duration of devel-opment stage was negatively correlated with temperature. It was found that the tempera-ture for egg growth was 11,34℃ and the effective accumulated temperature of the egggrowth stage was 87.7 degree-days. The average egg number per female was 40~45. Thepeak of egg laying was on 4~8 days after hatching. At the same time, the life cycle, scx ra-tio, mating and damage activity were studied.
出处
《山东农业大学学报（自然科学版）》
CSCD
1990年第3期41-46,共6页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
针叶小爪螨
发育
生物学
板栗
Oligonychus ununguis(Jacobi)
temperature for development beginning
effective accumulated temperature
