01955nas a2200169   4500008004100000245011900041210006900160520135600229653001501585653002701600653001401627653001601641653001701657100003301674700003701707856004101744       2021                        eng d00aThe Acoustic behavior of the Brazilian Caatinga big rodent is incongruent to its actual position in Hidrochaerinae0 aAcoustic behavior of the Brazilian Caatinga big rodent is incong3 a<p>Our knowledge about the acoustic behavior of Caviinae species drove us to investigate Kerodon rupestris&rsquo;s (Caviidae: Hydrochoerinae) repertoire. This species is endemic to Caatinga and states as vulnerable in the Brazilian list of endangered species. We recorded sounds uttered by individuals from Santa Luzia, State of Para&iacute;ba, Brazil. We promoted interactions among 13 animals during intra and intersexual pairing sessions, under undisturbed interactions in captivity, and in free-living conditions. We found a repertoire of 13 call types, most of them (all except three) shared with Cavia and only five possibly shared also with Hydrochoerus: (1) Close contact and cohesion: tonal and noisy contact calls, tweet, slow-whistle; (2) Social regulation (incitement, subordination or auto-defense): whine, peep-squeak, yelp; (3) Offensive aggression and status display: roar, snort, and teeth-chattering (4) Warning or intimidation: alarm-whistle, drrr, and drumming; (5) Courtship: purr and slow-whistle. The similarity of Kerodon signals to Hydrochoerinae species, despite the ecological differences, needs to be understood in comparative phylogenetic studies tracing back the origin of the courtship display in Caviidae. Thus, future research should focus on playback studies to test signals&#39; biological function hypothesis.</p>
10aalarm call10aHystricognathi rodents10asemi-arid10asocial life10avocalization1 aAlencar-Jr, Raimundo, Novaes1 aMonticellia, Patrícia, Ferreira  uhttps://bio.acousti.ca/fr/node/58447