Mating dynamics in a nematode with three sexes and its evolutionary implications.
Mating dynamics in a nematode with three sexes and its evolutionary implications.
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DOI：
10.1038/srep17676
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发表时间：
2015-12-03
影响因子：
4.6
通讯作者：
Pires-daSilva A
中科院分区：
文献类型：
--
作者：
Chaudhuri J;Bose N;Tandonnet S;Adams S;Zuco G;Kache V;Parihar M;von Reuss SH;Schroeder FC;Pires-daSilva A
线虫有不同的繁殖策略，这使它们成为比较研究的理想对象，以解决交配系统如何进化。在这里，我们介绍了自由生活的线虫Rhabditis sp.的性别比例和交配动态。SB347，其中雄性、雌性和两性共存。这三种性别都是通过自交和异交产生的，雌性往往在母亲的后代中出现得更早。雄性更喜欢与雌性交配，而不是两性的，我们的结果表明，这与雌性特有的性信息素ASCR#1和ASCR#9的产生有关。我们讨论了这一系统与寄生线虫之间的相似之处，寄生线虫在单亲和双亲繁殖之间交替。
Nematodes have diverse reproductive strategies, which make them ideal subjects for comparative studies to address how mating systems evolve. Here we present the sex ratios and mating dynamics of the free-living nematode Rhabditis sp. SB347, in which males, females and hermaphrodites co-exist. The three sexes are produced by both selfing and outcrossing, and females tend to appear early in a mother’s progeny. Males prefer mating with females over hermaphrodites, which our results suggest is related to the female-specific production of the sex pheromones ascr#1 and ascr#9. We discuss the parallels between this system and that of parasitic nematodes that exhibit alternation between uniparental and biparental reproduction.