Beyond Nature and Nurture: Phenotypic Plasticity in Blood-Feeding Behavior of Anopheles gambiae s.s. When Humans Are Not Readily Accessible
Beyond Nature and Nurture: Phenotypic Plasticity in Blood-Feeding Behavior of Anopheles gambiae s.s. When Humans Are Not Readily Accessible
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DOI：
10.4269/ajtmh.2009.09-0124
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发表时间：
2009-12-01
影响因子：
3.3
通讯作者：
Thomas, Frederic
中科院分区：
文献类型：
--
作者：
Lefevre, Thierry;Gouagna, Louis-Clement;Thomas, Frederic
为了测试宿主可及性油吸血行为的影响，我们评估了冈比亚按蚊在布基纳法索波波-迪乌拉索附近的水稻种植区的宿主觅食行为序列的两个阶段的寄生度，在那里，由于多年来普遍使用（大部分是非浸渍的）蚊帐，人类不容易接近。首先，通过鉴定室内休息样品的血餐来源来评估失去选择的模式。固有的主机的喜好，然后决定了两个气味诱饵进入陷阱，并排设置在一个选择安排，释放人类或小牛的气味。油人摄食比例约为40%，而被困安人摄食比例为88%。冈比亚“选择”了人饵诱捕器，这表明尽管对人类气味的诱捕器进入反应更强，但宿主选择的嗜动物模式。这一悖论可以解释为该种群的可塑性取食策略的进化。这是因为更容易获得现成的东道国，尽管不太受欢迎。
To test for the effects of host accessibility oil blood-feeding behavior, we assessed degrees of anthropophily of the malaria mosquito Anopheles gambiae at two stages of the behavioral sequence of host foraging in a rice growing area near Bobo-Dioulasso, Burkina Faso, where humans are not readily accessible because of years of generalized use of (mostly non-impregnated) bed nets. First, patterns of lost selection were assessed by the identification of the blood meal origin of indoor-resting samples. Inherent host preferences were then determined by two odor-baited entry traps, set side by side in a choice arrangement, releasing either human or calf odor. The proportion of feeds taken oil humans was around 40%, whereas 88% of trapped An. gambiae "chose" the human-baited trap, indicating a zoophilic pattern of host selection despite a stronger trap entry response with human odor. This paradox can be interpreted as the evolution of a plastic strategy of feeding behavior in this field population of An. gambiae because of the greater accessibility of readily available, although less-preferred, hosts.