七星瓢虫基础研究现状

七星瓢虫对蚜虫等农林业中的重要害虫有较强的控制作用,利用七星瓢虫进行控害的生物防治技术正在逐步推广。本文就七星瓢虫的生物学特性、捕食、对农药的反应以及人工饲养等方面进行综述:七星瓢虫幼虫随龄期增长逐渐出现黄斑,温湿度对生长发育影响较大,以成虫越冬,有滞育现象。七星瓢虫捕食性强,捕食对象较多,包括多种蚜虫、木虱、蚧虫、粉虱、蓟马、网蝽等,其捕食功能反应模型主要为HollingⅡ型,捕食效应受温度、光周期及其猎物密度与自身密度影响。七星瓢虫对农药有一定的选择性,农药对七星瓢虫捕食行为及其生长发育有一定的影响,并会导致其抗药性的产生。目前,七星瓢虫的饲养以昆虫材料为主,辅以人工饲料,采用低温储存,以卵卡作为商品出售。七星瓢虫的基础研究可为今后大规模运用于田间提供参考。

Basic research status of Coccinella septempunctata

Coccinella septempunctata has a strong control effect on aphids and other important pests in agriculture and forestry. The biological control technology of C. septempunctata has already been used in the field. In this paper, the biological characteristics, predation, response to pesticides and artificial rearing of C. septempunctata were reviewed. The larvae of C. septempunctata gradually appeared macular with the growth of instar, temperature and humidity had great influence on its growth and development. It overwinters as adults and exhibits adiapause. C. septempunctata is highly predatory and eats many prey, including aphids, psylla, scale insects, white flies, thrips, net bugs, etc. Its predatory functional response model is mainly Holling II, and its predation effect is affected by temperature, photoperiod, prey density and its own density. C. septempunctata has certain selectivity to pesticides. Its predatory behavior, growth and development are affected by pesticides, causing the development of pesticide resistance. At present, C. septempunctata is mainly raised with insect materials, supplemented by artificial feed, stored at low temperature, and sold with egg cards. The basic research on the application of C. septempunctata would provide a reference for large-scale application in the field in the future.