【摘要】 按 Service(1973)的方法调查分析了湖南怀化地区中华按蚊和三带喙库蚊幼期在稻田中的自然存活率。中华按蚊在6—8月份的发育历期从Ⅰ龄到蛹分别为3.375,3.583,3.500,5.750,2.083天,合计18.291天;三带喙库蚊为1.375,2.125,2.063,4.100,2.125天,合计11.788天.从1龄幼虫到成虫的成虫率,中华按蚊为0.06,三带喙库蚊为0.013。幼期的环境致死强度,中华按蚊为1.225,三带喙库蚊为1.903。更多还原

【Abstract】 Stage-specific life tables were coastructed for the immatures of Anopheles sinensis Wiedemann,1828 and Culex tritaeniorhynahus Giles, 1901 collected from ricefields in suburbs Huaihua,Hunan Province during late June to early July and late July to early August,respectively.The mean durations for first to fourth instar of larvae and pupae are: 3.375, 3.583,3.500,5,750,and 2.083 days for An.sinensis,and 1.375,2.125, 2.063,4.100,and 2:125 days for Cx.tritaeniorhynchu,respectively.The survival rates for these two.species are 0.06 and o.013,and the killing powers for them are 1.225 and 1.903,respectively.更多还原