Is re-feeding efficiency compromised by prolonged starvation during aestivation in the green striped burrowing frog, Cyclorana alboguttata?
Article first published online: 24 NOV 2003
© 2003 Wiley-Liss, Inc.
Journal of Experimental Zoology Part A: Comparative Experimental Biology
Volume 300A, Issue 2, pages 126–132, 1 December 2003
How to Cite
Cramp, R. L. and Franklin, C. E. (2003), Is re-feeding efficiency compromised by prolonged starvation during aestivation in the green striped burrowing frog, Cyclorana alboguttata?. J. Exp. Zool., 300A: 126–132. doi: 10.1002/jez.a.10272
- Issue published online: 24 NOV 2003
- Article first published online: 24 NOV 2003
- Manuscript Accepted: 17 MAR 2003
- Manuscript Received: 4 JUN 2002
- Australian Research Council. Grant Number: 98/ARCL052G98
- University of Queensland Post-Graduate Student Research Grant
We examined several morphological parameters of the gastrointestinal tract, digesta passage rates, and nutrient assimilation efficiencies of Green-striped Burrowing frogs (Cyclorana alboguttata) following prolonged fasting during three months of aestivation and compared these with frogs that had been continuously fed. Whole animal digesta passage rates were significantly reduced following three months aestivation as a result of a decreased digesta evacuation rate from the stomach. Furthermore, food was selectively retained in the small intestine for an increased time following three months of aestivation. Overall digestibility of food and nitrogen, carbon, and energy extraction efficiencies were not significantly different from control values following three months of aestivation. These findings suggest that C. alboguttata employs reduced digesta passage rates so as to maximize nutrient assimilation efficiency following prolonged food deprivation during aestivation. J. Exp. Zool. 300A:126–132, 2003. © 2003 Wiley-Liss, Inc.