摘要
多异瓢虫在山东省德州地区一年发生４代，部分个体５代，以成虫在杂草丛内、残枝落叶及土块下越冬。在自然变温下，卵、幼虫、预蛹、蛹、成虫产卵前期和全世代的发育始点和有效积温分别为１８．８±０．５２℃和１５．０日度、１６．９７±０．０３℃和７３．３日度、１５．９７±０．０１℃和１０．２３日度、１５．４７±０．０５℃和２３．０５日度、１７．６±０．０４℃和３４．１日度、１８．２±０．１０℃和１７０．３日度。据Ｈｏｌｉｎｇ圆盘方程测定，１─４龄幼虫和产卵前期成虫日最大捕食棉蚜量依次力６．７头、３６．４头、７７．５头、８１．３头和６８．０头。
Adonia variegata Goeze is an important natural enemy of aphids and some smallinsect pests.The results of observation and investigation are as follows:it has four or fivegenerations a year and overwinters with adults in Dezhou Prefecture of Shandong.Undervarious natural temperature,the developmental zero and effective cumulative temperature ateach development stage were:egg stage 18.8±0.52℃,15.0 day-degrees;larva stage 16.97±0.03℃,73.3 day-degrees;prepupa stage 15.97±0.01℃,10.23 day-degrees;pupastage 15.47±0.05℃,23.05 day-degrees;preoviposition stage 17.6±0.04℃,34.1 day-degrees;one generation 18.2±0.10℃,170.3 day-degrees。According to calculation byusing Holling's disc equation(1959),the maximum of preying cotton aphids of 1-4 instarlarva and adult were 6.7,36.4,77.5,81.3 and 68.0 per day,respectively.
出处
《华东昆虫学报》
1995年第2期70-74,共5页
Entomological Journal of East China
关键词
多异瓢虫
成虫
幼虫
有效积温
棉蚜
落叶
越冬
捕食
草丛
产卵
Adonia variegata Goeze,biology,developmental zero,effectivecumulative temperature, preying amount
