Fecal steroid analysis of female giraffe (Giraffa camelopardalis) reproductive condition and the impact of endocrine status on daily time budgets
Gestation and lactation can impose substantial energetic costs on female mammals. We developed a non-invasive means to determine reproductive condition in female giraffe using fecal steroid analysis. Giraffe may be especially challenged during their reproductive cycle because of two characteristics: they are impregnated while lactating and they do not breed seasonally. We studied the social […]
Enriching the lives of bears in zoos
Bears have a long history in captivity and, in recent times, various enrichment techniques have been developed to stimulate the complex behavioural repertoire of these species. Enrichment strategies, where possible, should allow for an expression of natural behaviours observed in the wild. Enclosure design is critically important and enrichment should not be used to compensate […]
Responses of Javan Gibbon (Hylobates moloch) Groups in Submontane Forest to Monthly Variation in Food Availability: Evidence for Variation on a Fine Spatial Scale
Primates tend to prefer specific plant foods, and primate home ranges may contain only a subset of food species present in an area. Thus, primate feeding strategies should be sensitive to the phenology of specific species encountered within the home range in addition to responding to larger scale phenomena such as seasonal changes in rainfall […]
Tadpole nutritional ecology and digestive physiology: Implications for captive rearing of larval anurans
The adaptive tadpole stage allows anurans to exploit food resources in two vastly different environments, and the transition from aquatic larvae to terrestrial carnivores is both dramatic and complex. As seen in many other members of the freshwater aquatic community, the nutritional requirements and characteristic feeding strategies of anuran larvae (tadpoles) are extremely diverse, ranging […]