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Sea lions

Total body oxygen stores and physiological diving capacity of California sea lions as a function of sex and age

Total body oxygen stores and physiological diving capacity of California sea lions as a function of sex and age

... concentrations, sea lions were particularly delayed as sub-adult animals (4–5 years old) possessed Mb concentrations only 83% of adult ...California sea lions during environmental ...

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Vocal identity and species recognition in male Australian sea lions,
Neophoca cinerea

Vocal identity and species recognition in male Australian sea lions, Neophoca cinerea

... (seals, sea lions, fur seals and walrus) mother–pup vocal recognition has been clearly identified as an important component of mother–offspring relations and call structure is complex and individually ...

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Feeding kinematics and performance of basal otariid pinnipeds, Steller sea lions and northern fur seals: implications for the evolution of mammalian feeding

Feeding kinematics and performance of basal otariid pinnipeds, Steller sea lions and northern fur seals: implications for the evolution of mammalian feeding

... Steller sea lions also exhibited some striking behavior both in water and on ...Steller sea lions were not as exaggerated as observed in northern fur ...

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Insights from venous oxygen profiles: oxygen utilization and management in diving California sea lions

Insights from venous oxygen profiles: oxygen utilization and management in diving California sea lions

... muscle early in the dive, the high variability in profile shape later in the dive, especially in shorter dives, may partially be explained by different patterns of muscle blood flow during diving as suggested in emperor ...

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Responses of Australian sea lions, Neophoca cinerea, to anthropogenic activities in the Perth metropolitan area, Western Australia

Responses of Australian sea lions, Neophoca cinerea, to anthropogenic activities in the Perth metropolitan area, Western Australia

... Arctocephalus pusillus have shown increased levels of aggression among themselves when exposed to higher sound levels (Tripovich et al., 2012). In contrast, similar behavioural changes as a response to noise were not ...

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Predicting metabolic rate from heart rate in juvenile Steller sea lions
Eumetopias jubatus

Predicting metabolic rate from heart rate in juvenile Steller sea lions Eumetopias jubatus

... California sea lions (Butler et ...California sea lions, doubly labelled water turnover overestimated metabolic rate by as much as ...Steller sea lions in the ...

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Foraging behaviour indicates marginal marine habitat for New Zealand sea lions: remnant versus recolonising populations

Foraging behaviour indicates marginal marine habitat for New Zealand sea lions: remnant versus recolonising populations

... Zealand sea lions currently focuses on reduc- ing the bycatch rate in squid fisheries but does not take into consideration the impact of resource competition with fisheries (Chilvers ...of sea ...

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Metabolic costs of foraging and the management of O2 and
CO2 stores in Steller sea lions

Metabolic costs of foraging and the management of O2 and CO2 stores in Steller sea lions

... California sea lions (Hurley and Costa, ...the sea lions we used swam freely and would have expended more energy while ...California sea lions (Hurley and Costa, ...

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Deep diving sea lions exhibit extreme bradycardia in long duration dives

Deep diving sea lions exhibit extreme bradycardia in long duration dives

... between sea lions and across the deployment because of masking of the signal from muscle artefact and possible movement of the ...five sea lions, ~100 dives (93–116 dives) were processed and ...

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The effects of water temperature on the energetic costs of juvenile and adult California sea lions (Zalophus californianus): the importance of skeletal muscle thermogenesis for thermal balance

The effects of water temperature on the energetic costs of juvenile and adult California sea lions (Zalophus californianus): the importance of skeletal muscle thermogenesis for thermal balance

... The authors wish to thank the Brookfield Zoo (Brookfield, IL, USA) and Sea World (San Diego, CA, USA) for the use of their sea lions, as well as support of the research. We thank B. Long, T. Kendall, ...

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Foraging behaviour of juvenile female New Zealand sea lions (Phocarctos hookeri) in contrasting environments

Foraging behaviour of juvenile female New Zealand sea lions (Phocarctos hookeri) in contrasting environments

... NZ sea lions by modeling populations exploiting optimal ...NZ sea lion at AI is the commercial arrow squid trawl fishery, both through mortality from bycatch and potential resource competition ...NZ ...

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Standard metabolic rate at the surface and during trained submersions in adult California sea lions (Zalophus californianus)

Standard metabolic rate at the surface and during trained submersions in adult California sea lions (Zalophus californianus)

... and sea lions as there are considerable differences between the diving abilities and behavior of phocids (true seals) and otariids (fur seals and sea lions) (Costa, 1992; Williams et ...

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Flipper stroke rate and venous oxygen levels in free ranging California sea lions

Flipper stroke rate and venous oxygen levels in free ranging California sea lions

... California sea lion [ Zalophus californianus (Lesson 1828)] is an ideal model with which to investigate the effect of muscle workload (flipper stroke rate) on the depletion of blood oxygen stores during ...

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Foraging energetics and diving behavior of lactating New Zealand sea lions, Phocarctos hookeri

Foraging energetics and diving behavior of lactating New Zealand sea lions, Phocarctos hookeri

... Zealand sea lions would have a reduced diving metabolic rate and that this would result in a correspondingly lower at-sea ...Zealand sea lions was ...Australian sea lions ...

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Foraging locations of female New Zealand sea lions (Phocarctos hookeri) from a declining colony

Foraging locations of female New Zealand sea lions (Phocarctos hookeri) from a declining colony

... NZ sea lions from Figure of Eight Island, Carnley Harbour, Auckland Islands, from January to April (the NZ sea lion breeding season) ...NZ sea lions seen suckling a pup were captured ...

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Physiological constraints and energetic costs of diving behaviour in marine mammals : a review of studies using trained Steller sea lions diving in the open ocean

Physiological constraints and energetic costs of diving behaviour in marine mammals : a review of studies using trained Steller sea lions diving in the open ocean

... decided to study the diving metabolism of trained Steller sea lions Eumetopias.. jubatus, away from the confines—and security—of a traditional laboratory or.[r] ...

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Heart rate regulation in diving sea lions: the vagus nerve rules

Heart rate regulation in diving sea lions: the vagus nerve rules

... diving sea lions are typical of those of sea lions swimming in a flume at ≤ 50% maximal oxygen consumption, we postulate that any exercise modulation of heart rate during dives occurs ...

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Serum profiling by MALDI-TOF mass spectrometry as a diagnostic tool for domoic acid toxicosis in California sea lions

Serum profiling by MALDI-TOF mass spectrometry as a diagnostic tool for domoic acid toxicosis in California sea lions

... living sea lions with acute DAT and stranded sea lions without DAT has not been ...classify sea lions afflicted with DAT with 50% sensitivity and 93% specificity which equates to ...

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Variability in haul-out behaviour by male Australian sea lions Neophoca cinerea in the Perth metropolitan area, Western Australia

Variability in haul-out behaviour by male Australian sea lions Neophoca cinerea in the Perth metropolitan area, Western Australia

... N. cinerea decreased in numbers in the present study when tidal height increased. While this pattern was similar to that reported for Steller sea lions E. ju- batus on islands off Alaska, tide level did not ...

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Hydrodynamic drag in steller sea lions (Eumetopias jubatus)

Hydrodynamic drag in steller sea lions (Eumetopias jubatus)

... Steller sea lions utilize the same propulsion mode as other otariids, but their performance differs somewhat from California sea lions because of their larger ...Steller sea ...

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