Effect of aestivation on long bone mechanical properties in the green-striped burrowing frog, Cyclorana alboguttata

Hudson, N. J., Bennett, M. B. and Franklin, C. E. (2004) Effect of aestivation on long bone mechanical properties in the green-striped burrowing frog, Cyclorana alboguttata. Journal of Experimental Biology, 207 3: 475-482. doi:10.1242/jeb.00787

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Author Hudson, N. J.
Bennett, M. B.
Franklin, C. E.
Title Effect of aestivation on long bone mechanical properties in the green-striped burrowing frog, Cyclorana alboguttata
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
Publication date 2004-01-01
Sub-type Article (original research)
DOI 10.1242/jeb.00787
Open Access Status File (Publisher version)
Volume 207
Issue 3
Start page 475
End page 482
Total pages 8
Editor A. A. Biewener
M. Burrows
H. Hoppeler
P. L. Lutz
N. Nelson
S. F. Perry
Place of publication Cambridge
Publisher Company of Biologists Ltd
Language eng
Subject C1
780105 Biological sciences
270601 Animal Physiology - Biophysics
270604 Comparative Physiology
Abstract The green-striped burrowing frog, Cyclorana alboguttata, survives extended drought periods by burrowing underground and aestivating. These frogs remain immobile within cocoons of shed skin and mucus during aestivation and emerge from their burrows upon heavy rains to feed and reproduce. Extended periods of immobilisation in mammals typically result in bone remodelling and a decrease in bone strength. We examined the effect of aestivation and, hence, prolonged immobilisation on cross-sectional area, histology and bending strength in the femur and tibiolibula of C alboguttata. Frogs were aestivated in soil for three and nine months and were compared with control animals that remained active, were fed and had a continual supply of water. Compared with the controls, long bone size, anatomy and bending strength remained unchanged, indicating an absence of disuse osteoporosis. This preservation of bone tissue properties enables C. alboguttata to compress the active portions of their life history into unpredictable windows of opportunity, whenever heavy rains occur.
Keyword Osteoporosis
Disuse
Immobilisation
Anuran
Aestivation
Cyclorana Alboguttata
Alligator-mississippiensis
Metabolic Depression
Myotis-lucifugus
Iguana-iguana
Muscle
Performance
Neobatrachus
Hibernation
Locomotion
Strength
Biology
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 13:06:11 EST