摘要
本文报道了黄斑盘瓢虫的有效积温。其卵、幼虫、蛹与全世代的发育起点温度分别为12.4,8.9,11.8与9.9℃;有效积温分别为41.1、138.8,53.6与243.3日度。其发育速率受猎物的影响,捕食苹果蚜的幼虫和蛹期合计平均10.4天,食大豆蚜的11.9天,食洋槐蚜的13.9天。成虫食最占全世代总食置的92％。该虫在江淮地区一年发生5～6代,以成虫越冬。每雌产卵213～1290粒。对寄主有明显的季节跟随现象。
Laboratory studies and field observations on the life history and predation efficacy of Coelophore saucia on aphids were carried out from 1980 to 1987 in Yangzhou. C. saucia had 5-6 generations a year, overwintered in the adult stage. The accumulative development temperature and the initiating temperature for the development of egg, larva, pupa and a complete life cycle (egg-adult) was found to be 41.1 day-degrees (DD) and 12.4℃, 138.8DD and 8.9℃, 53.6DD and 11.8℃, and 243.3 DD and 9.9℃, respectively. The developmental rate varied with different prey the predator consumed. The duration of larval and pupal stage was 10.4 days when preying on Aphis pomi, 11.9 days on A. glycines, and 13.9 days on A. robiniae. Predation by the adult stage accounted for 92% of the total predation in a generation. The fecundity was 213-1290 eggs per female adult. The occurrence of the predator's population was found to be synchronized with the phenology of the prey.
