Tachykinin-expressing neurons control male-specific aggressive arousal in Drosophila.

Tachykinin-expressing neurons control male-specific aggressive arousal in Drosophila.
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DOI:
10.1016/j.cell.2013.11.045
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发表时间:
2014-01-16
期刊:
影响因子:
64.5
通讯作者:
Anderson DJ
Anderson DJ
中科院分区:
生物学1区
文献类型:
--
作者:
Asahina K;Watanabe K;Duistermars BJ;Hoopfer E;González CR;Eyjólfsdóttir EA;Perona P;Anderson DJ

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Males of most species are more aggressive than females, but the neural mechanisms underlying this dimorphism are not clear. Here, we identify a neuron and a gene that control the higher level of aggression characteristic ofDrosophila melanogastermales. Males, but not females, contain a small cluster of FruM+neurons that express the neuropeptide tachykinin (Tk). Activation and silencing of these neurons increased and decreased, respectively, intermale aggression without affecting male-female courtship behavior. Mutations in bothTkand a candidate receptor,Takr86C, suppressed the effect of neuronal activation, whereas overexpression ofTkpotentiated it.Tkneuron activation overcame reduced aggressiveness caused by eliminating a variety of sensory or contextual cues, suggesting that it promotes aggressive arousal or motivation. Tachykinin/Substance P has been implicated in aggression in mammals, including humans. Thus, the higher aggressiveness ofDrosophilamales reflects the sexually dimorphic expression of a neuropeptide that controls agonistic behaviors across phylogeny.
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