广州地区灰白蚕蛾生物学特性及种群动态

Biology and Population Dynamics of Ocinara variana in Guangzhou

灰白蚕蛾(Ocinara variana)是榕属(Ficus)植物的重要害虫,在广州地区每年发生6代。在室温条件下(25～27℃),卵、幼虫、蛹、成虫的历期分别为3～4d、12～15d、3～5d、和3～5d;雌虫产卵量约为30～400粒/雌,平均产卵量约为200粒/雌;种群数量一年有两个发生的高峰期,分别出现在4～5月和9～10月。

Ocinara variana is one of important pests on Ficus plants in southern China. It has 6 generations a year in Guangzhou. At 25-27℃, the developmental durations of egg, larvae, pupa and adult were 3-4, 12-15, 3-5, 3-5 days, respectively. The average fecundity of the moth was 200 eggs per female, ranging from 30 to 400 eggs per female. Two peaks of population dynamics occurred each year. in spring （from April to May） and fall （from September to October） respecfively.