Nature2014-06-24 4:59 PM

雄性果蝇会改变求偶声音 Dynamic sensory cues shape song structure in Drosophila


很多动物的雄性都会发出有一定规律的求偶声音,来提高它们与雌性的繁殖成功率,所以叫声结构的变化一直被看做是有害的“噪音”。雄性果蝇也使用求偶声音(是由翅膀振动产生的),Mala Murthy及同事对这些信号的模式(规律)进行了研究。他们发现,雄性会根据视觉输入和自身运动感觉输入信号来调整它们声音的规律(由两个交替的声音模式组成)。雌性对这些努力很敏感,并会根据它们的行为状态和声音特点来改变其行走速度。这些结果与认为求偶声音有一个固定模式这样一个被普遍接受的假设相矛盾,同时也将果蝇确立为用于研究复杂社会环境中快速决策方式的一个有希望的实验模型。


The generation of acoustic communication signals is widespread across the animal kingdom, and males of many species, including Drosophilidae, produce patterned courtship songs to increase their chance of success with a female. For some animals, song structure can vary considerably from one rendition to the next; neural noise within pattern generating circuits is widely assumed to be the primary source of such variability, and statistical models that incorporate neural noise are successful at reproducing the full variation present in natural songs. In direct contrast, here we demonstrate that much of the pattern variability in Drosophila courtship song can be explained by taking into account the dynamic sensory experience of the male. In particular, using a quantitative behavioural assay combined with computational modelling, we find that males use fast modulations in visual and self-motion signals to pattern their songs, a relationship that we show is evolutionarily conserved. Using neural circuit manipulations, we also identify the pathways involved in song patterning choices and show that females are sensitive to song features. Our data not only demonstrate that Drosophila song production is not a fixed action pattern, but establish Drosophila as a valuable new model for studies of rapid decision-making under both social and naturalistic conditions.






Nature Magazine

0 Following 27 Fans 0 Projects 626 Articles


Meristems encompass stem/progenitor cells that sustain postembryonic growth of all plant organs. How meristems are activated and sustained by nutrient

Read More

Transcription of ribosomal RNA by RNA polymerase (Pol) I initiates ribosome biogenesis and regulates eukaryotic cell growth. The crystal structure of P

Read More

Abstract The effect of anthropogenic aerosols on cloud droplet concentrations and radiative properties is the source of one of the largest uncertainti

Read More

Abstract Ecological and societal disruptions by modern climate change are critically determined by the time frame over which climates shift beyond his

Read More

Abstract Evidence from Greenland ice cores shows that year-to-year temperature variability was probably higher in some past cold periods, but there is

Read More

Abstract The land and ocean act as a sink for fossil-fuel emissions, thereby slowing the rise of atmospheric carbon dioxide concentrations1. Although t

Read More

论文摘要 人们已经非常清楚生物多样性对初级生产力等生态系统功能有一个积极影响,但它对植物凋落物的多样性和分解植物凋落物的生物的多样性的影响却不是很清楚。Stephan H?ttenschwiler及同事对从亚北极到热带、包括水生生态系统和陆地生态系统在内的五个地点所进行的并行操纵实验中的凋落物多样性进

Read More

论文摘要 FANTOM5 (即“哺乳动物基因组-5的功能注解”) 是一个大型国际合作项目的第5大阶段,其目标是分析定义每个人类细胞类型的转录调控网络。本期Nature上的两篇Articles论文发表了该项目的一些最新结果。第一篇论文利用FANTOM5项目组的组织和原代细胞样本来定义整个人体中活性的、在

Read More

论文摘要 有证据表明,血管 (尤其是它们的内皮细胞) 控制器官的生长、平衡和再生。在本期Nature上发表的两篇论文中,Ralf Adams及同事证明,骨头血管含有专门支持骨成熟和再生的内皮细胞。Anjali Kusumbe等人在小鼠骨骼系统内识别出一个在介导骨生长中起关键作用的毛细血管亚型。这些血管

Read More

论文摘要 CD4 T细胞(携带能够识别被病毒感染的细胞表面上的CD4抗原的受体的辅助T细胞)的丧失是艾滋病发病的根源。在这项研究中,Warner Greene等人识别出静止的淋巴CD4 T细胞在HIV感染过程中被耗尽的机制。利用保持了天然淋巴环境的人淋巴组织的体外培养,本文作者发现,失败的病毒复制触发

Read More