Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

Ecological and chemical correlates of cutaneous resistance to evaporative water loss for hylid frogs from the wet-dry tropics of Australia

Young, Jeanne Elise. (2006). Ecological and chemical correlates of cutaneous resistance to evaporative water loss for hylid frogs from the wet-dry tropics of Australia. PhD Thesis, Charles Darwin University.

Document type: Thesis
Citation counts: Google Scholar Search Google Scholar
Attached Files (Some files may be inaccessible until you login with your CDU eSpace credentials)
Name Description MIMEType Size Downloads
Download this reading Thesis_CDU_6541_Young_J.pdf PDF version generated by Student application/pdf 1002.31KB 402
Reading the attached file works best in Firefox, Chrome and IE 9 or later.

Author Young, Jeanne Elise.
Title Ecological and chemical correlates of cutaneous resistance to evaporative water loss for hylid frogs from the wet-dry tropics of Australia
Institution Charles Darwin University
Publication Date 2006
Thesis Type PhD
Subjects 0608 - Zoology
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 (Rc) in 25 species of frogs from northern Australia, including 17 species in the family Hylidae, six species in the Myobatrachidae, 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 Rc = 0 to 63.1. These include low values indistinguishable from a free water surface to high values typical of ‘waterproof’ anuran species. There was a strong correlation between ecological habit and Rc, 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 1500 km aridity gradient. This study represents the strongest evidence to date of a link between ecological habits and cutaneous resistance to water loss among species of frogs.
Additional Notes Please note that Appendix 1 is available in hard copy only.


© copyright

Every reasonable effort has been made to ensure that permission has been obtained for items included in CDU eSpace. If you believe that your rights have been infringed by this repository, please contact digitisation@cdu.edu.au.

 
Versions
Version Filter Type
Access Statistics: 128 Abstract Views, 402 File Downloads  -  Detailed Statistics
Created: Thu, 18 Sep 2008, 09:44:41 CST