VERTICAL ESTIMATES OF SURVIVORSHIP OF LARVAE AND PUPAE OF ANOPHELES-GAMBIAE GILES COMPLEX IN BARINGO DISTRICT, KENYA

被引:12
作者
ANIEDU, I [1 ]
MUTINGA, MJ [1 ]
MUTERO, CM [1 ]
机构
[1] INT CTR INSECT PHYSIOL & ECOL,POB 30772,NAIROBI,KENYA
来源
INSECT SCIENCE AND ITS APPLICATION | 1993年 / 14卷 / 01期
关键词
MOSQUITOS; ANOPHELES-GAMBIAE; SURVIVORSHIP; LIFE TABLES;
D O I
10.1017/S1742758400013370
中图分类号
Q96 [昆虫学];
学科分类号
摘要
The stage-specific and age-specific survivorship of the immature gambiae Giles s.l. were studied in Baringo District Kenya, using vertical life-table methods. Survivorship from first instar to adult emergence was 0.085, giving a mortality of 91.5% during the rainy season. However, survivorship dropped to zero (100% mortality) in the dry season. Mortality was most severe in the first and second instars in all cases. Mean life expectancy increased significantly for larvae that survived beyond the first 3 days of life. Suspected predators of mosquito pre-imagines in the breeding sites were collected and counted. From their large numbers and diversity it was inferred that predation was probably an important mortality factor.
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页码:39 / 48
页数:10
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