红点唇瓢虫生物学特性及其捕食功能的研究

本文报道了2005-2006年在福建省的沿海平潭等地，通过室内饲养、室外观察和林间调查，进行了红点唇瓢虫的生物学特性及其对松突圆蚧捕食功能的初步研究结果。红点唇瓢虫在福建省一年发生4代，世代高度重叠，以2—4代成虫越冬。成虫寿命较长，可达3个多月；且适应性强，能够在松林内建立较稳定的群落；每年5—8月为其活动高峰期，与松突圆蚧大发生期相一致；其对松突圆蚧有较强的捕食能力，应用Holling—Ⅱ圆盘方程进行拟合捕食量方程，得到红点唇瓢虫成虫的日极限捕食量为55．84头／日。

STUDY ON THE BIOLOGICAL CHARACTERISTIC AND PREDATION OF CHILOCORUS KUWANAE SILVESTRI

The paper reported the result of the preliminary study on the biological characteristic and pridation of Chilocorus kuwahae Silvestri by raising in lab and observing in wild in Pingtan, Fujian from.2005 to 2006. in Fujian, this ladybeetle has four generations a year with high overlaps between generations. The over wintering stage is adult. The adult ladybeetle has long life, that is more than 3 months, and high compatibility, can establish stable community in wild. Its activity peak is May to August, that is the same to the energe time of Hemiberlesia pitysophila Takagi. Chilocorus kuwanae Silvestri can strongly control Heraiberlesia pitysophila Takagi, its equation of the predation can be described by Holling 11 mode. The daily maximum predation of Chilocorus kuwanae Silvestri is 55.84 per day.