Drosophila melanogaster males respond differently at the behavioural and genome-wide levels to Drosophila melanogaster and Drosophila simulans females
Drosophila melanogaster males respond differently at the behavioural and genome-wide levels to Drosophila melanogaster and Drosophila simulans females
复制标题
DOI：
10.1111/j.1420-9101.2009.01834.x
复制
发表时间：
2009-11-01
影响因子：
2.1
通讯作者：
Carney, G. E.
中科院分区：
文献类型：
--
作者：
Ellis, L. L.;Carney, G. E.
黑腹果蝇与拟果蝇同域生存，两个物种之间的交配产生不能生育的杂交后代的频率很低。进化理论预测，雌性会选择配偶，因此雄性应该根据雌性的暗示改变自己的行为。我们证明了D. melanogaster雄性迅速减少对D. simulans女性求偶水平降低5分钟内暴露于一个异性的女性，和整体求偶显着低于求偶对同种女性。为了了解配偶选择过程中分子水平的变化，我们对D. melanogaster雄性向异种D.结果发现，与对照组相比，9个基因的表达发生了变化。相比之下，男性法院同种女性改变至少35个位点的表达。同种求偶引起的变化可能调节神经系统功能，以加强正同种信号，抑制对异种信号的反应。
Drosophila melanogaster are found in sympatry with Drosophila simulans, and matings between the species produce nonfertile hybrid offspring at low frequency. Evolutionary theory predicts that females choose mates, so males should alter their behaviour in response to female cues. We show that D. melanogaster males quickly decrease courtship towards D. simulans females. Courtship levels are reduced within 5 min of exposure to a heterospecific female, and overall courtship is significantly lower than courtship towards conspecific females. To understand changes at the molecular level during mate choice, we performed microarray analysis on D. melanogaster males that courted heterospecific D. simulans females and found nine genes have altered expression compared with controls. In contrast, males that court conspecific females alter expression of at least 35 loci. The changes elicited by conspecific courtship likely modulate nervous system function to reinforce positive conspecific signals and dampen the response to heterospecific signals.