【摘要】 长突毛瓢虫以成虫在植物枯叶、土缝等处越冬,翌年4月了蛰活动,在慈菇、荷藕、红萍等水生植物上捕食蚜虫,在扬州一年可完成11～12代。长突毛瓢虫对猎物有一定的选择性,偏嗜水生植物上的蚜虫,日捕食蚜量最大为66头,捕食功能与蚜虫密度关系符合Holling Ⅱ型,捕食功能与瓢虫密度符合Beddington模型。寻找效应随寄主密度和自身密度的增加而呈双曲面下降。更多还原

【Abstract】 Results of the field observations in Yangzhou showed that S. yamato could complete 11-12 generations in a year. Adult overwintered in ground crevices and leaf litter until the following April. Aphids, mainly Rhopalosiphum nymphacae, on aquatic plants were the, preferred prey by the predator. tfJBachadult cold prey on a maximum of 66 aphids per day. The correlation between the functional response of the predator and the prey density was found to be Holling Ⅱ.type. The average adult daily feeding and prey density were fitted with BeddihgtonModel.更多还原