M
Michael A. Castellini
Researcher at University of Alaska Fairbanks
Publications - 79
Citations - 4365
Michael A. Castellini is an academic researcher from University of Alaska Fairbanks. The author has contributed to research in topics: Leptonychotes weddellii & Population. The author has an hindex of 36, co-authored 77 publications receiving 4214 citations. Previous affiliations of Michael A. Castellini include Scripps Institution of Oceanography & University of California, San Diego.
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Aerobic and anaerobic metabolism during voluntary diving in Weddell seals: Evidence of preferred pathways from blood chemsitry and behavior
TL;DR: Post-dive arterial lactic acid concentrations were at no time different from resting levels unless the previous dive exceeded 20 to 25 min, while blood gases were in the normal mammalian range, but based upon resting apneic values may drop to remarkably low levels during prolonged dives.
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Aerobic diving limits of immature Weddell seals
TL;DR: The peak post-dive blood LA concentration relative to dive duration demonstrate that there is a positive relationship between aerobic dive limit (ADL) and body size, and the calculation of the ADL from available oxygen stores correlates well with the lactate/endurance curve intercept.
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The biochemistry of natural fasting at its limits.
TL;DR: It appears, at least for penguins and seals, that the duration of the fast may be limited by changes that occur in biochemical regulation near the end of theFasts in these animals are closely interrelated.
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Buffering capacity of vertebrate muscle: Correlations with potentials for anaerobic function
TL;DR: The results indicate that muscle intracellular buffering capacity is especially critical in locomotory muscles which must function under conditions where circulatory perfusion is inadequate to rapidly remove the acidic end-products such as lactic acid that are produced by anaerobic glycolysis.
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The diet of Weddell seals in McMurdo Sound, Antarctica as determined from scat collections and stable isotope analysis
TL;DR: Stable isotope and dive data analyses indicated that while most seals foraged predominantly on pelagic fish and squid, some juveniles concentrated on shallow benthic Trematomus spp.