Functional organization of the tympanal organ of the flour moth, Ephestia kuehniella
1976; Elsevier BV; Volume: 22; Issue: 9 Linguagem: Inglês
10.1016/0022-1910(76)90105-0
ISSN1879-1611
AutoresMartha Denis Marrero Pérez, Р. Д. Жантиев,
Tópico(s)Physiological and biochemical adaptations
ResumoData about electrical recordings from the tympanic organ of the flour moth, Ephestia kuehniella, to acoustic stimuli is presented. The stimuli had a frequency that ranged from 5 to 100 kHz, with minimal intensities of 40 to 50 db (Odb = 0.0002 dynes/cm2) and maximal up to 110 db. The tympanic organ of E. kuehniella responded in the whole range of frequencies used and showed two sensitivity maxima, one at 20 kHz and the other at 60 kHz. It responded from 45 to 110 db. The electrical activity of the tympanic nerve consisted of a spontaneous discharge of a type B cell and a tonic discharge in response to acoustic stimulation, produced by four acoustic sense cells, called A1, A2, A3, and A4. All these acoustic sense cells respond in the whole frequency range used and they differ in the heights of their action potentials and in their sensitivity to acoustic stimuli. The possible biological significance of hearing in pyralid moths is discussed.
Referência(s)