Bioacoustics of Lagothrix lagothricha poeppigii

Breeding. Copulation of Poeppig’s Woolly Monkey is often preceded by solicitations from the female who uses a click (or “tooth chatter”) vocalization when 10 m or less from the male. The male sometimes answers the female in the same way, which sometimes continues through mating. Males may ignore solicitations from females. Nineteen of 44 mounts recorded were performed by adult males, 24 by subadult males, and one by a male of undetermined maturity. The average mount lasts c.4 minutes, based on 25 mounts. Multiple males often mate with a single female during her period of receptivity on the same day or on separate days. Male Poeppig’s Woolly Monkeys are very tolerant of each another, but other adult females often harassed a copulating pair, sometimes interrupting them. Stereotyped scent marking using chest and anogenital areas is performed by males and females and seems to be associated with mating, although its role is not well understood. A single young is born after a gestation of ¢.225 days.