Larval habitat segregation between the molecular forms of the mosquito Anopheles gambiae in a rice field area of Burkina Faso, West Africa.
Larval habitat segregation between the molecular forms of the mosquito Anopheles gambiae in a rice field area of Burkina Faso, West Africa.
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DOI：
10.1111/j.1365-2915.2011.00957.x
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发表时间：
2012-03
影响因子：
1.9
通讯作者：
Simard F
中科院分区：
文献类型：
--
作者：
Gimonneau G;Pombi M;Choisy M;Morand S;Dabiré RK;Simard F
在西非，主要的非洲热带疟疾蚊子冈比亚按蚊的M和S分子形式之间的谱系分裂被认为是由生态分歧驱动的，主要发生在幼虫阶段。在这里，我们提出的证据栖息地隔离的两种分子形式和周围的灌溉稻田位于布基纳法索西部的潮湿大草原背景。从2009年6月至11月，对从稻田区中心到周围稀树草原的一系列繁殖地分布沿着的成蚊进行纵向采样。分析表明，这两种分子形式和它们的兄弟物种An。阿拉伯树在该地区并非随机分布。提取了一个主要的生态梯度，相对于稻田周长。M型与较大的繁殖场所有关，主要以稻田为代表，而S型和An。发现阿拉伯种依赖临时的、雨水充沛的繁殖地。这些结果支持幼虫栖息地分离的假设，并证实这两种形式有不同的幼虫栖息地的要求。种族隔离显然与人类永久栖息地及其支持的社区结构有关。
In West Africa, lineage splitting between the M and S molecular forms of the major Afro-tropical malaria mosquito, Anopheles gambiae is thought to be driven by ecological divergence, occurring mainly at the larval stage. Here, we present evidences for habitat segregation between the two molecular forms in and around irrigated rice-fields located within the humid savannahs background of western Burkina Faso. Longitudinal sampling of adult mosquitoes emerging from a range of breeding sites distributed along a transect extending from the heart of the rice-fields area into the surrounding savannahs was conducted from June to November 2009. Analysis revealed that the two molecular forms and their sibling species An. arabiensis are not randomly distributed in the area. A major ecological gradient was extracted, in relation to the rice-fields perimeter. The M form was associated with larger breeding sites, which were mainly represented by rice field paddies whereas the S form and An. arabiensis were found to depend upon temporary, rain-filled breeding sites. These results support hypotheses about larval habitat segregation and confirm that both forms have different larval habitat requirement. Segregation appears clearly linked to anthropogenic permanent habitats and the community structure they support.
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影响因子：
3
作者：
Fournet, Florence;Cussac, Maud;Dabire, Roch K.
通讯作者：
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影响因子：
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作者：
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DOI：
10.4269/ajtmh.2009.09-0124
发表时间：
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影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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