Effects of hormonal contraception on vocal patterns of captive southern yellow-cheeked gibbons (<i>Nomascus gabriellae</i>).

ABSTRACT: The effects of hormonal contraception in non-human primates have been studied predominantly in relation to reproductive physiology. To date, no study has investigated how hormonal contraception affects vocal patterns in non-human primates. As part of our long-term research into the vocal behavior of southern yellow-cheeked gibbons (Nomascus gabriellae) in zoos, we have managed to obtain vocal datasets from four adult contracepted (Nexplanon^® and Depo-Provera^®) females of this species. In addition, we also recorded coda vocalizations (i.e., male calls added after the completion of the great call) from three paired males who are partners of three of the four females studied. We quantified 11 acoustic features in the female great calls and five acoustic features i

SUBMITTER: Hradec M 

PROVIDER: S-EPMC12009915 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature