Evidence of Polyandry for Aedes aegypti in Semifield Enclosures
Evidence of Polyandry for Aedes aegypti in Semifield Enclosures
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DOI：
10.4269/ajtmh.2012.11-0225
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发表时间：
2012-04-01
影响因子：
3.3
通讯作者：
Harrington, Laura C.
中科院分区：
文献类型：
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作者：
Helinski, Michelle E. H.;Valerio, Laura;Harrington, Laura C.
雌性埃及伊蚊被认为主要是单性的（即一生中只交配一次），但交配频率的真实估计尚未在实验室外确定。评估 Ae 中的一妻多夫制。埃及伊蚊与野生蚊子的第一代后代，在墨西哥南部登革热流行地区，稳定同位素精液标记的雄性（N-15或C-13）被允许与未标记的雌性在半野外围栏（22.5 m(3)）中交配。平均而言，14% 的女性对这两个标签均呈阳性，表明她们接受了不止一名男性的精液。我们的结果提供了证据，证明 48 小时内多次交配的比例虽小，但可能很重要，并为未来对该物种的一妻多夫进行野外研究提供了一种方法。一妻多夫对于理解蚊子生态、进化和繁殖行为以及蚊子控制的遗传策略具有重要意义。
Female Aedes aegypti are assumed to be primarily monandrous (i.e., mate only once in their lifetime), but true estimates of mating frequency have not been determined outside the laboratory. To assess polyandry in Ae. aegypti with first-generation progeny from wild mosquitoes, stable isotope semen-labeled males (N-15 or C-13) were allowed to mate with unlabeled females in semi field enclosures (22.5 m(3)) in a dengue-endemic area in southern Mexico. On average, 14% of females were positive for both labels, indicating that they received semen from more than one male. Our results provide evidence of a small but potentially significant rate of multiple mating within a 48-hour period and provide an approach for future open-field studies of polyandry in this species. Polyandry has implications for understanding mosquito ecology, evolution, and reproductive behavior as well as genetic strategies for mosquito control.