Thermoregulation in Beluga (Delphinapterus leucas) and Killer (Orcinus orca) Whales

@article{Kasting1989ThermoregulationIB,
  title={Thermoregulation in Beluga (Delphinapterus leucas) and Killer (Orcinus orca) Whales},
  author={Norman W. Kasting and Shelley A. L. Adderley and Tammy Safford and K. Gilbey Hewlett},
  journal={Physiological Zoology},
  year={1989},
  volume={62},
  pages={687 - 701}
}
Thermoregulatory variables were measured in captive beluga and killer whales to confirm earlier work on smaller cetaceans. Whales had body temperatures within mammalian range and maintained a skin-water temperature difference of about 2° C. Heat-loss coefficients were less than that reported for humans. Thermal conductance may be greater than or equal to small cetaceans and humans. The larger killer whales had smaller surface-area-to-volume ratios than the belugas, as expected. However, the… 

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Estimates of resting metabolic rates and relative changes in total energy intake can be used to parameterize bioenergetic models needed to estimate the ecological impacts and energetic requirements of Pacific white-sided dolphins in the wild, which will have conservation implications.

Energy requirements of Pacific white-sided dolphins (Lagenorhynchus obliquidens) as predicted by a bioenergetic model

These high energetic requirements of Pacific white-sided dolphins may indicate a reliance of dolphins on energy-rich prey, which has implications for fisheries management and conservation of marine mammals.

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Comparing this broad thermal neutral zone to the average sea surface temperatures potentially encountered during annual migrations indicates wild fur seals can likely exploit a large geographic area without added thermal metabolic costs.

Blubber Deposition During Ontogeny in Free-Ranging Bottlenose Dolphins: Balancing Disparate Roles of Insulation and Locomotion

Balancing energetic demands of thermoregulation and locomotion may limit the flexibility of yearlings to adjust blubber deposition in response to fluctuating water temperatures.

Comparative Respiratory Physiology in Cetaceans

Breath-by-breath respirometry data provide enhanced understanding of the respiratory physiology of cetaceans and are useful to provide proxies of lung function to better understand lung health or physiological limitations.

Scaling of insulation in seals and whales

Scaling of morphological variables that influence total insulation in eight species of marine mammals ranging in average size from 35 to 30000 kg are described and total heat loss and the partitioning of heat loss through the body surface and appendages are calculated.

Gas exchange and heart rate in the harbour porpoise, Phocoena phocoena

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