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Comparative analysis of cutaneous evaporative water loss in frogs demonstrates correlation with ecological habits

Young, Jeanne E., Christian, Keith A., Donnellan, Stephen, Tracy, Christopher R. and Parry, David L. (2005). Comparative analysis of cutaneous evaporative water loss in frogs demonstrates correlation with ecological habits. Physiological and Biochemical Zoology,78(5):847-856.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 38 times in Scopus Article | Citations
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IRMA ID 80801157xPUB40
Title Comparative analysis of cutaneous evaporative water loss in frogs demonstrates correlation with ecological habits
Author Young, Jeanne E.
Christian, Keith A.
Donnellan, Stephen
Tracy, Christopher R.
Parry, David L.
Journal Name Physiological and Biochemical Zoology
Publication Date 2005
Volume Number 78
Issue Number 5
ISSN 1537-5293   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-24744444941
Start Page 847
End Page 856
Total Pages 10
Place of Publication Chicago, IL, United States
Publisher The University of Chicago Press
Field of Research 0501 - Ecological Applications
0606 - Physiology
0608 - Zoology
0705 - Forestry Sciences
1116 - Medical Physiology
HERDC Category C1 - Journal Article (DEST)
Abstract Most frog species show little resistance to evaporative water loss (EWL), but some arboreal species are known to have very high resistances. We measured EWL and cutaneous resistance to evaporation (R-c) in 25 species of frogs from northern Australia, including 17 species in the family Hylidae, six species in the Myobatrachidae, and one each in the Bufonidae and the Microhylidae. These species display a variety of ecological habits, including aquatic, terrestrial, and arboreal specialisations, with the complete range of habits displayed within just the one hylid genus, Litoria. The 25 species measured in this study have resistances that range from to R-c = 63.1. These include low R c values indistinguishable from a free water surface to high values typical of waterproof anuran species. There was a strong correlation between ecological habit and R-o, even taking phylogenetic relationships into account; arboreal species had the highest resistance, aquatic species tended to have little or no resistance, and terrestrial species tended to have resistance between those of arboreal and aquatic frogs. For one species, Litoria rubella, we found no significant changes in EWL along a 1,500-km aridity gradient. This study represents the strongest evidence to date of a link between ecological habits.
Keywords secondary structure
nitrogen-excretion
litoria-caerulea
temperature
resistance
skin
amphibians
hyperolius
evolution
DOI http://dx.doi.org/10.1086/432152   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)


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