Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK.
J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2021 Jul;207(4):533-552. doi: 10.1007/s00359-021-01495-1. Epub 2021 Jun 7.
Although crickets move their front wings for sound production, the abdominal ganglia house the network of the singing central pattern generator. We compared the effects of specific lesions to the connectives of the abdominal ganglion chain on calling song activity in four different species of crickets, generating very different pulse patterns in their calling songs. In all species, singing activity was abolished after the connectives between the metathoracic ganglion complex and the first abdominal ganglion A3 were severed. The song structure was lost and males generated only single sound pulses when connectives between A3 and A4 were cut. Severing connectives between A4 and A5 had no effect in the trilling species, it led to an extension of chirps in a chirping species and to a loss of the phrase structure in two Teleogryllus species. Cutting the connectives between A5 and A6 caused no or minor changes in singing activity. In spite of the species-specific pulse patterns of calling songs, our data indicate a conserved organisation of the calling song motor pattern generating network. The generation of pulses is controlled by ganglia A3 and A4 while A4 and A5 provide the timing information for the chirp and/or phrase structure of the song.
虽然蟋蟀通过前翅运动产生声音，但发声的中央模式发生器的网络位于腹部神经节中。我们比较了对腹部神经节链的连接物进行特定损伤对四种不同蟋蟀的鸣叫声活动的影响，这四种蟋蟀的鸣叫声产生了非常不同的脉冲模式。在所有物种中，当切断胸神经节复合体和第一腹神经节 A3 之间的连接物后，鸣叫声活动就会被废除。当切断 A3 和 A4 之间的连接物时，鸣叫声结构丢失，雄性只产生单个声音脉冲。在颤翅种类中，切断 A4 和 A5 之间的连接物没有影响，但在鸣叫声种类中导致啁啾延长，在两种 Teleogryllus 种类中导致短语结构丢失。切断 A5 和 A6 之间的连接物对鸣叫声活动没有或只有较小的影响。尽管鸣叫声具有特定于物种的脉冲模式，但我们的数据表明，鸣叫声运动模式生成网络的组织是保守的。脉冲的产生由 A3 和 A4 神经节控制，而 A4 和 A5 为啁啾和/或短语结构提供定时信息。
