Seasonality, sociality, and reproduction: Long-term stressors of ring-tailed lemurs (Lemur catta)
Fecal glucocorticoid (fGC) concentrations are reliable, non-invasive indices of physiological stress that provide insight into an animal’s energetic and social demands. To better characterize the long-term stressors in adult members of a female-dominant, seasonally breeding species – the ring-tailed lemur (Lemur catta) – we first validated fecal samples against serum samples and then examined the […]
A comparison of activity patterns for captive Propithecus tattersalli and Propithecus coquereli
The activity patterns and social interactions of two species of captive sifaka were observed during a 2-year period. Allogrooming was not observed in golden-crowned sifaka and they spent significantly more time resting than the Coquerel’s sifaka. Females of both species were found to be dominant to males. The golden-crowned sifaka (Propithecus tattersalli) spent significantly less […]