The neuroethology of sound production in tiger moths (Lepidoptera, Arctiidae)

摘要: When stimulated either acoustically or tactually, certain species of arctiid moths rhythmically emit trains clicks from metathoracic tymbals. The purpose the experiments presented here was to determine location within central nervous system (CNS) proposed tymbal pattern generator (CPG) in Cycnia tenera. Motor neuron impulses that underlie activation were recorded extracellularly nerve while subjected selective severing suboesophageal, prothoracic, pterothoracic and abdominal ganglia connectives. output evoked by acoustic tactile stimulation originates a common CPG because spikes both cases are similar amplitude, waveform rhythmicity. Our results showed: (1) removal CNS posterior second neuromere had no effect, (2) head decreased responsiveness animal and, (3) connectives between prothoracic abolished responses stimuli diminished stimuli. We conclude although minimal circuitry sufficient for activating tymbals resides ganglion, cephalic required normal, particular, auditory-evoked operation CPG.