The reproduction performance of captive owl monkeys, a breed used exte
nsively in biomedical research, was observed at the Battelle Primate F
acility (BPF). The colony grew through captive breeding, imports from
the Peruvian Primatological Project, and others to a peak size of 730.
It included seven karyotypes of Aotus sp. Results showed that owl mon
keys can breed successfully in a laboratory in numbers sufficient to s
ustain modest research programs. Reproductive success increases when p
airs are compatible, of the same karyotype, and stabilized; however, m
ated pairs of different karyotype are also productive. Under condition
s of controlled lighting and heating, owl monkeys at BPF showed no bir
th peak nor birth season.