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8 results for “Australian fur seal”
Data set for paper on Australian fur seal prey capture and foraging efficiency
<p>Data set for paper on Australian fur seal prey capture and foraging efficiency</p>
Data from: Behavioural thermoregulation in the Australian fur seal (<em>Arctocephalus pusillus doriferus</em>)
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Data from: Analysis of Australian fur seal diet by pyrosequencing prey DNA in faeces
DNA-based techniques have proven useful for defining trophic links in a variety of ecosystems and recently developed sequencing technologies provide new opportunities for dietary studies. We investigated the diet of Australian fur seals (Arctocephalus pusillus doriferus) by pyrosequencing prey DNA from faeces collected at three breeding colonies across the seals' range. DNA from 270 faecal samples was amplified with four polymerase chain reaction primer sets and a blocking primer was used to limit amplification of fur seal DNA. Pooled amplicons from each colony were sequenced using the Roche GS-FLX platform, generating > 20 000 sequences. Software was developed to sort and group similar sequences. A total of 54 bony fish, 4 cartilaginous fish and 4 cephalopods were identified based on the most taxonomically informative amplicons sequenced (mitochondrial 16S). The prevalence of sequences from redbait (Emmelichthys nitidus) and jack mackerel (Trachurus declivis) confirm the importance of these species in the seals' diet. A third fish species, blue mackerel (Scomber australasicus), may be a more important prey species than previously recognised. There were major differences in the proportions of prey DNA recovered in faeces from different colonies, probably reflecting differences in prey availability. Parallel hard-part analysis identified largely the same main prey species as did the DNA-based technique, but with lower species diversity and no remains from cartilaginous prey. The pyrosequencing approach presented significantly expands the capabilities of DNA-based methods of dietary analysis and is suitable for large-scale diet investigations on a broad range of animals.
On following pages: 3. Juan Fernandez Fur Seal (Arctocephalus philippii); 4. Guadalupe Fur Seal (Arctocephalus townsend australis); 7. New Zealand Fur Seal (Arctocephalus forsteri); 8. Subantarctic Fur Seal (Arctocephalus tropicalis); 9. Afro-Australian); 5. Galapagos Fur Seal (Arctocephalus galapagoensis); 6. South American Fur Seal (Arctocephalus Fur Seal (Arctocephalus pusillus). in Otariidae
On following pages: 3. Juan Fernandez Fur Seal (Arctocephalus philippii); 4. Guadalupe Fur Seal (Arctocephalus townsend australis); 7. New Zealand Fur Seal (Arctocephalus forsteri); 8. Subantarctic Fur Seal (Arctocephalus tropicalis); 9. Afro-Australian); 5. Galapagos Fur Seal (Arctocephalus galapagoensis); 6. South American Fur Seal (Arctocephalus Fur Seal (Arctocephalus pusillus).
Data from: Analysis of Australian fur seal diet by pyrosequencing prey DNA in faeces
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Australian fur seal foraging consistency data
<p>Substantial variation in foraging strategies can exist within populations, even those typically regarded as generalists. Specialisations arise from the consistent exploitation of a narrow behavioural, spatial or dietary niche over time, which may reduce intra-specific competition and influence adaptability to environmental change. However, few studies have investigated whether behavioural consistency confers benefits at the individual and/or population level. While still recovering from commercial sealing over-exploitation, Australian fur seals (AUFS; <i>Arctocephalus pusillus doriferus</i>) represent the largest marine predator biomass in south-eastern Australia. During lactation, female AUFS adopt a central-place foraging strategy and are, thus, vulnerable to changes in prey availability. The present study investigated the population-level repeatability and individual consistency in foraging behaviour of 34 lactating female AUFS at a south-east Australian breeding colony between 2006 and 2019. Additionally, the influence of individual-level behavioural consistency on indices of foraging success and efficiency during benthic diving was determined. Low to moderate population-level repeatability was observed across foraging behaviours, with the greatest repeatability in the mean bearing and modal dive depth. Individual-level consistency was greatest for the proportion of benthic diving, total distance travelled and trip duration. Indices of benthic foraging success and efficiency were positively influenced by consistency in the proportion of benthic diving, trip duration and dive rate but not influenced by consistency in bearing to most distal point, dive depth or foraging site fidelity. The results of the present study provide evidence of the benefits of consistency for individuals, which may have flow-on effects at the population level.</p>
Australian fur seal foraging consistency data
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Estimating the cost of predator avoidance in Australian fur seals
<p>Raw accelerometer and dive depth data from11 adult female Australian fur seals from Kanowna Island, northern Bass Strait (south-eastern Australia) during their foraging trips to sea. Data used to calculate a Roll Index to assess vigilance behaviour while at sea (see paper for details).</p>
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Allen Brain Atlas
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.