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Comment
. 2008 Mar 18;105(11):E14; author reply E15.
doi: 10.1073/pnas.0800915105. Epub 2008 Mar 6.

Hibernation can also cause high delta15N values in cave bears: a response to Richards et al

Comment

Hibernation can also cause high delta15N values in cave bears: a response to Richards et al

Aurora Grandal d'Anglade et al. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The authors declare no conflict of interest.

Comment on

References

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    1. Fernández D, Vila M, Grandal A. Stable isotopes data (delta 13C, delta 15N) from the cave bear (Ursus spelaeus): A new approach to its palaeoenvironment and dormancy. Proc R Soc Biol Sci B. 2001;268:1159–1164. - PMC - PubMed
    1. Barboza PS, Farley SD, Robbins CT. Whole-body urea cycling and protein turnover during hyperphagia and dormancy in growing bears (U. americanus and U. arctos). Can J Zool. 1997;75:2129–2136.
    1. McGee ME, et al. Decreased bone turnover with balanced resorption and formation prevent cortical bone loss during disuse (hibernation) in grizzly bears (Ursus arctos horribilis). Bone. 2008;42:396–404. - PMC - PubMed
    1. Lennox AL, Goodship AE. Polar bears (Ursus maritimus), the most evolutionary advanced hibernators, avoid significant bone loss during hibernation. Comp Biochem Physiol A. 2008 doi: 10.1016/j.cbpa.2007.11.012. - DOI - PubMed

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