Vitamin D metabolism in polar vertebrates

1. Studies of serum 25-hydroxy-vitamin D (25-OHD) in the Antarctic have been undertaken in husky dog, seal and penguin and compared to man. 2. Husky dogs showed a reversal of the expected seasonal variation of serum 25-OHD with maxima in June when the hours of bright sunshine and amount of u.v.-B ra...

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Bibliographic Details
Published in:Comparative Biochemistry and Physiology Part B: Comparative Biochemistry
Main Authors: Griffiths, Paul, Fairney, Angela
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier 1988
Subjects:
Antarctic
The Antarctic
Weddell
Antarc*
Crabeater Seals
Weddell Seals
Online Access:http://nora.nerc.ac.uk/id/eprint/521629/
https://doi.org/10.1016/0305-0491(88)90014-4
Description
Summary:1. Studies of serum 25-hydroxy-vitamin D (25-OHD) in the Antarctic have been undertaken in husky dog, seal and penguin and compared to man. 2. Husky dogs showed a reversal of the expected seasonal variation of serum 25-OHD with maxima in June when the hours of bright sunshine and amount of u.v.-B radiation were lowest. li3. Values for random serum 25-OHD values in seals showed large interspecies differences, the values for Weddell seals being significantly greater than for Crabeater seals (P < 0.01). 3. Penguin sera showed low concentrations of serum 25-OHD with no evidence of a response to prolonged exposure to sunlight.

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