The association between the phytoplankton, Rhopalosolen species (Chlorophyta; Chlorophyceae), and Anopheles gambiae sensu lato (Diptera: Culicidae) larval abundance in western Kenya
The association between the phytoplankton, Rhopalosolen species (Chlorophyta; Chlorophyceae), and Anopheles gambiae sensu lato (Diptera: Culicidae) larval abundance in western Kenya
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DOI：
10.1007/s11284-005-0131-0
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发表时间：
2006-05-01
影响因子：
2
通讯作者：
Yan, Guiyun
中科院分区：
文献类型：
--
作者：
Tuno, Nobuko;Githeko, Andrew K.;Yan, Guiyun
藻类是非洲疟疾病媒冈比亚按蚊Giles和阿拉伯按蚊Patton（广义冈比亚按蚊）幼虫和其他浮游动物的重要食物来源，但关于短暂水体中琼脂植物群的经验证据仍然很少。2002年7月至11月，对肯尼亚西部自然水生生境中的动物进行了采样，以研究决定A. gambiae sl幼虫丰度与单细胞表生绿色藻类Rhopalosolen物种（绿藻门;绿藻科）一起对五种浓度最高的第三和第四龄幼虫和蛹（以下称为老年幼虫）进行采样。典范对应分析表明，Rhopalosolen物种的存在是最重要的决定因素的动物组合。老阶段A. gambiae sl幼虫的密度与Rhopalosolen种类的存在呈正相关，而一、二龄的密度与Rhopalosolen种类的存在呈正相关。gambiae sl没有。尽管幼虫密度较高，但具有Rhopalosolen sp.的水体产生了较大的蚊子。我们证明，水体的生产力的疟疾病媒幼虫可以在大小上有所不同，这取决于琼脂植物群。我们讨论浮游植物作为蚊子幼虫种群的调节器。
Algae are important food resources of the larvae of the African malaria vectors, Anopheles gambiae Giles and Anopheles arabiensis Patton (Anopheles gambiae sensu lato), and other zooplankton, but empirical evidence remains meager about the agal flora in ephemeral water bodies. The animals present in natural aquatic habitats in western Kenya were sampled from July to November 2002 to study abiotic and biotic environmental factors determining A. gambiae sl larval abundance. The five highest concentrations of third and fourth instars and pupae (hereafter referred to as old-stage larvae) were sampled in conjunction with the unicellular epizoic green algae, Rhopalosolen species (Chlorophyta; Chlorophyceae). Canonical correspondence analysis revealed that the presence of Rhopalosolen species was the most important determinant of the animal assemblage. The density of old-stage A. gambiae sl larvae was positively correlated with the presence of Rhopalosolen species, but the density of first and second instars of A. gambiae sl was not. The water bodies with Rhopalosolen sp. yielded larger mosquitoes in spite of the higher density of larvae. We demonstrated that the productivity of water bodies in terms of the larvae of malaria vectors can differ in magnitude depending on the agal flora. We discuss phytoplankton as a regulator of mosquito larval populations.