摘要
首次在福建省南部发现一种为害西番莲的新害螨 ,形态学鉴定为卵形短须螨 (Brevipalpusobovatus Donnadieu) .1 991-1 992年在室内饲养该螨 ,共 8-9代 ,卵期 6.0 -2 5 .0 d,幼螨期 3 .0 -1 4.0 d,若螨 期 2 .0 -1 2 .0 d,若螨 期 5 .0 -2 1 .5 d,产卵前期 2 .0 -3 0 .0 d,以雌成螨越冬 ,其寿命超过 3 0 d,最长达 2个月 .该螨在西番莲上雌雄比大于 2 0 0 0∶ 1 ,主要为孤雌生殖 .调查表明 ,卵形短须螨分布在漳州地区的紫色、黄色种西番莲和新引进的无性系“台农 1号”上 ,主要为害植株成龄叶片 ,田间种群数量高峰期出现在 1 1月份 .
In 1991, Brevipalpus obovatus Donnadieu, a new species of mite, was first found damaging passionflower in Zhangzhou, south Fujian, China. It propagated 8-9 generations annually in laboratory in 1991-1992. Its egg stage ranged 6.0-25.0 days, larva stage 3.0-14.0 days, nymph Ⅰ stage 2.0-12.0 days, nymph Ⅱ stage 5.0-21.5 days, preoviposition stage 2.0-30.0 days, and the female adult longevity exceeded 30 days, longest up to 2 months while overwintering. The sex ratio of female to male was more than 2 000∶1 in passionflower, and reproducing by pathenogenesis mainly. It distributed generally in yellow or purple passionflower and a newly introduced clone 'Tainong No.1' in Zhangzhou. It distroyed mature leaves and the peak of its field population appeared in November. B.obovatus had never been found damaging passionflower elsewhere before.
出处
《福建农林大学学报(自然科学版)》
CSCD
北大核心
2002年第3期320-323,共4页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
关键词
卵形短须螨
西番莲
形态学
生活史
田间种群
数量
passionflower
Brevipalpus obovatus
morphology
life history
field population fluctuation