% pubman genre = article
@article{item_3470838,
title = {{Population-specific call order in chimpanzee greeting vocal sequences}},
author = {Girard-Buttoz, C{\'e}dric and Bortolato, Tatiana and Laporte, Marion and Grampp, Mathilde and Zuberb{\"u}hler, Klaus and Wittig, Roman M. and Crockford, Catherine},
language = {eng},
issn = {25890042},
doi = {10.1016/j.isci.2022.104851},
year = {2022},
abstract = {{Primates rarely learn new vocalizations, but they can learn to use their vocaliza- {\textless}br{\textgreater}{\textless}br{\textgreater}tions in different contexts. Such {\textquoteleft}{\textquoteleft}vocal usage learning,{\textquoteright}{\textquoteright} particularly in vocal {\textless}br{\textgreater}{\textless}br{\textgreater}sequences, is a hallmark of human language, but remains understudied in non-hu- {\textless}br{\textgreater}{\textless}br{\textgreater}man primates. We assess usage learning in four wild chimpanzee communities of {\textless}br{\textgreater}{\textless}br{\textgreater}Ta{\i} {\textless}br{\textgreater}{\textless}br{\textgreater} {\textless}br{\textgreater}{\textless}br{\textgreater}{\textasciidieresis} and Budongo Forests by investigating population differences in call ordering {\textless}br{\textgreater}{\textless}br{\textgreater}of a greeting vocal sequence. Whilst in all groups, these sequences consisted of {\textless}br{\textgreater}{\textless}br{\textgreater}pant-hoots (long-distance contact call) and pant-grunts (short-distance submis- {\textless}br{\textgreater}{\textless}br{\textgreater}sive call), the order of the two calls differed across populations. Ta{\i}{\textasciidieresis} chimpanzees {\textless}br{\textgreater}{\textless}br{\textgreater}consistently commenced greetings with pant-hoots, whereas Budongo chimpan- {\textless}br{\textgreater}{\textless}br{\textgreater}zees started with pant-grunts. We discuss different hypotheses to explain this {\textless}br{\textgreater}{\textless}br{\textgreater}pattern and conclude that higher intra-group aggression in Budongo may have {\textless}br{\textgreater}{\textless}br{\textgreater}led to a local pattern of individuals signaling submission first. This highlights {\textless}br{\textgreater}{\textless}br{\textgreater}how within-species variation in social dynamics may lead to flexibility in call order {\textless}br{\textgreater}{\textless}br{\textgreater}production, possibly acquired via usage learning}},
journal = {{iScience}},
volume = {25},
number = {9},
eid = {104851},
}