Male fruit flies learn to avoid interspecific courtship
Male fruit flies learn to avoid interspecific courtship
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DOI：
10.1093/beheco/arh068
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发表时间：
2004-07-01
影响因子：
2.4
通讯作者：
Dukas, R
中科院分区：
文献类型：
--
作者：
Dukas, R
实验数据表明，理论模型通常假设，许多果蝇（果蝇属）的雄性在寻找配偶时至少部分是不加选择的，而且大多数是雌性进行选择性配偶选择，这可能导致早期的物种形成。雄性D.然而，在求偶的背景下，黑腹果蝇提出了一种可能性，即最初不加选择的雄性随着经验的积累变得更加有选择性。我通过比较雄性D的求偶行为来测试这种可能性。melanogaster在求偶方面的经验，D.模拟人和没有经验的男性我发现，与没有经验的雄性相比，有经验的雄性对D有追求。模拟果蝇雌性对雌性果蝇的求偶行为显著降低。simulans。然而，两种雄性处理都显示出与雌性D几乎相同的求偶持续时间。黑腹菌这些结果表明，雄性果蝇适应性地完善他们的求偶行为的经验，并建议男性的贡献比通常假设的更大的竞争性交配和初期的物种形成。
Experimental data suggest, and theoretical models typically assume, that males of many fruit flies (Drosophila spp) are at least partially indiscriminate while searching for mates, and that it is mostly the females who exert selective mate choice, which can lead to incipient speciation. Evidence on learning by male D. melanogaster in the context of courtship, however, raises the possibility that the initially indiscriminate males become more selective with experience. I tested this possibility by comparing the courtship behavior of male D. melanogaster experienced at courting females of the closely related species, D. simulans, and inexperienced males. I found that compared with the inexperienced males, the males experienced with courting D. simulans females showed significantly lower courtship toward female D. simulans. Both male treatments, however, showed virtually identical courtship durations with female D. melanogaster. These results indicate that male fruit flies adaptively refine their courtship behavior with experience and suggest that the males contribute more to assortative mating and incipient speciation than is commonly assumed.