Peripheral androgen action helps modulate vocal production in a suboscine passerine

The Auk
Matthew J FuxjagerB A Schlinger

Abstract

Androgenic activation of intracellular androgen receptors (AR) influences avian vocal production, though this has largely been investigated at the level of the brain. We investigated the influence of predominantly peripheral AR on vocal output in wild Golden-collared Manakins (Manacus vitellinus). In this suboscine species, males court females by performing acrobatic displays and by producing relatively simple chee-poo vocalizations. To assess whether peripheral AR influences the acoustic structure of these vocal signals, we treated reproductively active adult males with the peripherally selective antiandrogen bicalutamide and then measured phonation performance. Inhibiting AR outside of the central nervous system increased the duration of the chee note and decreased the fundamental frequency of the poo note. This treatment caused no discernable change to chee-poo frequency modulation or entropy. Our results show that activation of peripheral AR mediates note-specific changes to temporal and pitch characteristics of the Golden-collared Manakin's main sexual call. Thus, our study provides one of the first demonstrations that androgenic action originating outside of the brain and likely on musculoskeletal targets can modulate avi...Continue Reading

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Citations

Jun 14, 2016·Frontiers in Zoology·Matthew J FuxjagerBarney A Schlinger
Oct 11, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Lisa A Mangiamele, Matthew J Fuxjager
Oct 14, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Matthew J FuxjagerBarney A Schlinger
Jul 9, 2020·Proceedings. Biological Sciences·Heather E Watts
Oct 25, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·D Ashley Monks, Melissa M Holmes
Aug 1, 2020·Neuroscience and Biobehavioral Reviews·Gregory F Ball, Jacques Balthazart
Apr 23, 2021·Integrative and Comparative Biology·Barney A Schlinger, Ioana Chiver
May 20, 2021·Integrative and Comparative Biology·Sarah M SmithLisa A Mangiamele

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Software Mentioned

BICAL
Sound Analysis Pro
Audacity Audio Editor
Praat Phonetics

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