孟氏隐唇瓢虫和台毛艳瓢虫对茶椰圆蚧的捕食作用

Predation of Cryptolaemus montrouzieri and Pharoscymnus taoi to Aspidiotus destructor

本文首次报道，孟氏隐唇瓢虫和台毛艳瓢虫是茶椰圆蚧的重要捕食性天敌。１９９８-１９９９年我们研究了这两种瓢虫的生活习性及其对茶椰圆蚧二龄若虫的捕食作用。这两种瓢虫成虫对茶椰圆蚧二龄若虫的功能反应均可用 ＨｏｌｌｉｎｇⅡ型模型模拟。孟氏隐唇瓢虫的模型参数为：ａ’＝１．１３０２，Ｔｈ＝０．００９３，ｍａｘＮａ＝１０７.６２３３；台毛艳瓢虫的模型参数为：ａ’＝１．０００５，Ｔｈ＝０．０１２６，ｍａｘＮａ＝７９．３７４１。温度对孟氏隐唇瓢虫捕食作用的影响大于对台毛艳瓢虫的影响。个体间相互干扰对捕食作用的影响，孟氏隐唇瓢虫大于台毛艳瓢虫。孟氏隐唇瓢虫干扰反应模拟模型参数为：Ｑ＝０．４０４５，ｍ＝０．４３５９；台毛艳瓢虫干扰反应模拟模型参数为：Ｑ＝０．３３３５，ｍ＝０．４０４２．

The ladybirds Cryptolaemus montrouzieri Mulsant and Pharoscymnus taoi Sasaji were firstly reported as the important enemies of Aspidiotus destructor Signoret in this paper. During 1998-1999 ,we studied on the habits of these two ladybirds and their predation to Aspidiotus de- structor. It was suggested that both these functional responses of the two ladybirds to the 2nd in- star nymph of Aspidiotus destructor be mocked by Holling's Ⅱ type. The parameters of Crypto- laemus montrouzieri Mulsant were α'＝ 1. 1302, Th = 0. 0093, maxNa = 107. 6233, and that of Pharoscymnus taoi Sasaji were a' = 1. 0005, Th = 0. 0126, maxNa = 79. 3741. The effect of tem- perature on the functional response of Cryptolaemus montrouzieri Mulsant to Aspidiotus destructor was stronger than that of Pharoscymnus taoi Sasaji. The influence to predation of Cryptolaemus montrouzieri Mulsant was stronger than that of Pharoscymnus taoi Sasaji. The parameters of in- teractive response of Cryptolaemus montrouzieri Mulsant were Q = 0. 4045, m = 0. 4359,and that of Pharoscymnus taoi Sasaji were Q= 0. 3335,m= 0. 4042.