Serum Retinol, alpha-tocopherol, and lipids in four species of adult captive pinnipeds
Abstract 10.1002/zoo.10075.abs The sera of adult aquarium-held pinnipeds from four species (family Phocidae: harbor seals (Phoca vitulina) and gray seals (Halichoerus grypus); family Otariidae: northern fur seals (Callorhinus ursinus) and California sea lions (Zalophus californianus)) were analyzed for vitamin A (retinol), vitamin E (α-tocopherol), total cholesterol, triglycerides, phospholipids, and fatty acids. Each subject animal was […]
Lateralised Swimming Behaviour in the California Sea Lion
Lateralised motor behaviour in the pinnipeds has been subject to little investigation. This study examined the swimming behaviour of seven zoo-housed California sea lions to determine whether they exhibited a directional bias in their motor behaviour. Data were collected on the direction of the animals’ swimming patterns from the point of entering a pool of […]
An Empirical Case Study Examining Effectiveness of Environmental Enrichment in Two Captive Australian Sea Lions (Neophoca cinerea)
This case study examined the effect of environmental enrichment on the activity budgets of a male and female Australian Sea Lion (Neophoca cinerea) housed together at Adelaide Zoo. Using non-food-related (intrinsic) and food-related (extrinsic) enrichment objects, the study conducted an ABABA (withdrawal) experimental design over a 30-day period (180 hr). The study expected extrinsically reinforcing […]