AbstractStudies were conducted to document the oviposition biology of female white pine weevil, Pissodes strobi Peck. Data were recorded on female fecundity and daily feeding and oviposition activities. In addition, we compared fecundity of 1- and 2-year-old females. Female white pine weevils laid a mean ± SE total number of 132.3 ± 7.5 eggs (range 40–344 eggs) during an average oviposition period of 5.8 ± 0.4 weeks. It is during the first 5 weeks that white pine weevils lay the most eggs, with an egg-laying peak in the second week of the oviposition period. For a few females, egg production did not cease until the 22nd week. There was no difference between the number of eggs laid in the photophase and in the scotophase, but higher numbers of feeding punctures were observed during the night than during the day. The oviposition and feeding results for 2-year-old female white pine weevils were similar to those for 1-year-old females. This information contributes to the management of white pine weevils by providing a better understanding of some of the mechanisms of its population dynamics.
摘要 研究记录了白松象鼻虫(Pissodes strobi Peck)雌虫的产卵生物学特性。我们记录了雌虫的受精率以及每天的取食和产卵活动。此外,我们还比较了 1 岁和 2 岁雌虫的繁殖力。在平均 5.8 ± 0.4 周的产卵期内,白松象鼻虫雌虫产卵总数为 132.3 ± 7.5 个卵(范围为 40-344 个卵),平均值为 ± SE。白松象鼻虫在前 5 周产卵最多,产卵高峰期在产卵期的第二周。少数雌虫直到第 22 周才停止产卵。光照期和暗光期的产卵量没有差异,但夜间观察到的取食穿孔数量高于白天。2龄白松象鼻虫雌虫的产卵和取食结果与1龄雌虫相似。这些信息有助于更好地了解白松象鼻虫种群动态的一些机制,从而有助于白松象鼻虫的管理。