Biological traits of wild-caught populations of Aedes aegypti in dengue endemic and non-endemic regions of Kenya

IF 1.4 3区农林科学 Q2 ENTOMOLOGY

Journal of Vector Ecology Pub Date : 2021-06-01 DOI:10.52707/1081-1710-46.1.19

C. Wanjiku, D. Tchouassi, C. Sole, C. Pirk, B. Torto

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引用次数: 0

Abstract

ABSTRACT: Variation in vector traits can modulate local scale differences in pathogen transmission. Here, we compared seasonal variation in the wing length (proxy for body size) and energy reserves of adult wild-caught Aedes aegypti populations from a dengue endemic (Kilifi) and non-endemic (Isiolo) area of Kenya. Vector sampling in the dengue endemic site was conducted during the dry and wet seasons. In the non-endemic area, it was limited to the dry season which characterizes this ecology where sporadic or no rainfall is commonplace during the year. We found variation by site in the body size of both sexes, with an overall smaller size of Ae. aegypti populations collected from Isiolo than those from Kilifi. Our results show that although total carbohydrates and lipids levels were highest in both sexes during the dry season, they were two-fold higher in males than females. However, we found weak correlations between body size and energy reserves for both sexes, with body size being more sensitive in identifying differences at a population level. These results provide insights into the determinants of the vectoring potential of Ae. aegypti populations in dengue endemic and non-endemic ecologies in Kenya.

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肯尼亚登革热流行区和非流行区野生埃及伊蚊种群的生物学特性

摘要:媒介性状的变化可以调节病原体传播的地方尺度差异。在这里，我们比较了肯尼亚登革热流行地区(Kilifi)和非流行地区(Isiolo)野生捕获的成年埃及伊蚊种群的翅膀长度(代表体型)和能量储备的季节性变化。在旱季和雨季对登革热流行地点进行了媒介取样。在非流行地区，它仅限于干旱季节，这是该生态系统的特征，在那里，一年中零星或没有降雨是司空见惯的。我们发现，不同性别的伊蚊体型在不同部位存在差异，伊蚊体型总体较小。从伊西奥洛收集的埃及伊蚊数量比从基利菲收集的多。我们的研究结果表明，尽管在旱季两性的总碳水化合物和脂质水平最高，但雄性的碳水化合物和脂质水平是雌性的两倍。然而，我们发现两性的体型和能量储备之间存在微弱的相关性，体型在识别群体水平上的差异方面更为敏感。这些结果为Ae矢量势的决定因素提供了见解。肯尼亚登革热流行和非流行生态中的埃及伊蚊种群。

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来源期刊

Journal of Vector Ecology 生物-昆虫学

CiteScore

2.60

自引率

5.90%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Vector Ecology is an international journal published by the Society for Vector Ecology. It is concerned with all aspects of the biology, ecology, and control of arthropod and vertebrate vectors and the interrelationships between the vectors and the agents of disease that they transmit. The journal publishes original research articles and scientific notes, as well as comprehensive reviews of vector biology based on presentations at Society meetings. All papers are reviewed by at least two qualified scientists who recommend their suitability for publication. Acceptance of manuscripts is based on their scientific merit and is the final decision of the editor, but these decisions may be appealed to the editorial board. The journal began publishing in 1974 and now publishes on-line only.