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Dietary resource partitioning among sympatric New Zealand and Australian fur seals
The age and sex groups in this study employ dramatically different strategies to maximise their survival and reproductive success and consequently the prey that they utilise reflect their different physiological constraints and metabolic requirements. Expand
Entanglement of Australian sea lions and New Zealand fur seals in lost fishing gear and other marine debris before and after Government and industry attempts to reduce the problem.
It is found that entanglement rates did not decrease in recent years, and remedies such as education programs and government incentives that may reduce entanglements are discussed. Expand
Inter-sexual differences in New Zealand fur seal diving behaviour
In lactating females, foraging trip duration was significantly, positively correlated to the number of dives h -1 and negatively correlated with the mean dive duration at night, which indicates that females on longer trips invested relatively more time searching for prey patches, which they utilised on relatively short duration dives. Expand
Spatial separation of foraging habitats among New Zealand fur seals
Results from this study suggest that smaller seals cannot efficiently utilise prey in the same habitats as larger seals because smaller seals do not have the capacity to spend enough time underwater at the greater depths. Expand
Blue whale habitat selection and within-season distribution in a regional upwelling system off southern Australia
Analyzing sightings from aerial surveys over 6 upwelling seasons to assess within-season patterns of blue whale habitat selection, distribution, and relative abundance found that whales selected significantly higher SSC in the central and eastern zones than the western zone, where relative abundance was extremely variable. Expand
A risk-assessment approach to evaluating the significance of seal bycatch in two Australian fisheries
A common issue faced by fisheries and marine protected species managers is how to estimate the potential impacts of bycatch and identify appropriate options for mitigation, in the absence ofExpand
Dietary analysis of regurgitates and stomach samples from free-living Australian sea lions
Dietary remains recovered from Australian sea lion digestive tracts and regurgitate samples from Seal Bay were used to identify prey species consumed and octopus contributed 40% of the biomass in the samples, giant cuttlefish contributed 30% and ommastrephid squids contributed 14% biomass. Expand
The ontogeny of diving behaviour in New Zealand fur seal pups (Arctocephalus forsteri)
In general, pups dived successively deeper between June and September, and the aver- age number of dives per day, dive frequency, and vertical distance travelled increased, and several measures of diving perfor- mance also increased. Expand
The otoliths used in this book were taken from fish in southeastern Australia, but the broad similarities in the fish assemblages ensure that this guide will also be a useful reference forExpand