Age-correlated changes and juvenile hormone III regulation of the syllable period specific responses of the L3 auditory interneurons in the cricket, Acheta domesticus

John Henley, Jodie Greenwood, John Stout, Gordon Atkins

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

1. L3 is an auditory interneuron in the prothoracic ganglion of the cricket, Acheta domesticus. The degree of syllable period (SP) specific decrement to model calling songs is age-specific in L3. In response to calling songs having 50 ms SPs, L3s in old females (23-28 days) exhibit less response decrement than those in young (4 days) females (Figs. 1, 2). 2. Two to 4 days after juvenile hormone III (JHIII) application to old females, L3s respond in a decrementing manner similar to those of young females. The changes in the SP selectivity of L3 by age and JHIII application, correlate well with changes that have been demonstrated to occur in the selectivity of phonotaxis under similar conditions (Fig. 3). 3. The threshold of L3 does not change with age, while changes in L3's decrement result from decreased excitation in old females in response to the first syllable of a chirp (Figs. 4, 5). 4. Injection of patterned current pulses (which reproduce the temporal pattern of the calling song) do not elicit decrement (Fig. 6). 5. Age-related changes in selectivity to SP of the calling song occurs above and below L3s threshold (Fig. 7).

Original languageEnglish (US)
Pages (from-to)373-378
Number of pages6
JournalJournal of Comparative Physiology A
Volume170
Issue number3
DOIs
StatePublished - Mar 1 1992

Keywords

  • Audition
  • Behavioral correlates
  • Hormonal control
  • Identified neurons
  • Orthoptera

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Animal Science and Zoology
  • Behavioral Neuroscience

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