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首页> 外文期刊>Zoological Science >Courtship Patterns in the Drosophila montium Species Subgroup: Repeated Loss of Precopulatory Courtship?
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Courtship Patterns in the Drosophila montium Species Subgroup: Repeated Loss of Precopulatory Courtship?

机译：果蝇种亚组的求爱模式：交配前的求爱屡屡丧失？

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摘要

During precopulatory courtship, male Drosophila typically produce wing vibration to generate species-specific songs before mounting females. Three species in the lini clade of the montium species subgroup have been found to produce species-specific sine song only after mounting and during copulation. Here we investigated and analyzed the courtship behavior of 29 species in the montium subgroup from video and song recordings and measured the duration of wing vibration. We describe a great diversity of courtship behavior in the montium subgroup. The courtship patterns can be categorized into four types in the montium subgroup: 1) type P/C, species with both precopulatory and copulatory courtship, such as D. parvula and D. nikananu, 2) type P-/C, species with sporadic precopulatory and mainly copulatory courtship, such as D. auraria and D. triauraria. 3) type C, species with only copulatory courtship, such as D. tani and D. pectinifera, 4) type C-, species with only very brief copulatory courtship, such as D. rufa and D. asahinai. According to a phylogenetic tree based on sequences of mitochondrial COI and COII, and the nuclear Adh, both precopulatory courtship and copulatory courtship were present in the most basal species D. parvula. Each of two branches in the montium subgroup contains four types of courtship behavior. Type C is present in each sub-branch. These results suggest that the courtship behavior initially involved both precopulatory and copulatory courtship, but that subsequently precopulatory courtship has gradually been lost in the montium subgroup. We suggest reasons why precopulatory behavior might come to be lost in the montium subgroup.
机译：在交配前的求爱过程中，雄性果蝇通常会在雌性登上前产生翅膀振动，以产生特定物种的歌曲。已经发现，只有在坐骑和交配期间，三个属物种亚里尼进化枝中的三个物种才产生特定物种的正弦乐曲。在这里，我们从视频和歌曲记录中调查并分析了29个亚种在蒙太奇亚组中的求爱行为，并测量了机翼振动的持续时间。我们描述了在蒙蒂亚组中求爱行为的极大多样性。求爱模式可以分为以下四个类型：1）P / C类型，具有交配前和交配的物种，例如D. parvula和D. nikananu，2）P- / C类型，具有零星的物种交配前和主要是交配求偶，例如D. auraria和D. triauraria。 3）C型，只有交配性的物种，例如丹尼D. tani和D. pectinifera，4）C-型，只有交配性的物种非常短暂的物种，例如D. rufa和D. asahinai。根据基于线粒体COI和COII序列以及核Adh的系统发育树，在最基础的小种D. parvula中既存在交配求爱，又有交配求爱。 montium子组中的两个分支中的每个分支都包含四种求爱行为。类型C存在于每个子分支中。这些结果表明，求爱行为最初涉及交配前和交配后的恋爱，但后来交配前的求爱已逐渐在montium亚组中消失。我们提出了为什么在蒙皮亚组中可能失去早交行为的原因。

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