Evaporative water loss in nine insular populations of the Lizard Anolis cristatellus group in the British Virgin Islands

Razi Dmi'el, Gad Perry, James Lazell

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

We studied water loss in eight insular populations of the lizard Anolis cristatellus wileyae and in one population of A. ernestwilliamsi in the British Virgin Islands. We found a strong negative correlation between habitat aridity and total and cutaneous water loss rate (ranging from 1.5-10.3 mg g-1 h-1) and a strong positive correlation between habitat aridity and integument resistance to water loss (28.5-199.0 s cm-1). Water loss and integumentary resistance of A. ernestwilliamsi were similar to what would be predicted for A. cristatellus living in the same habitat. The Guana Island population of A, cristatellus was significantly different from all other populations. We believe two processes are responsible; phenotypic plasticity explains most of the observed variability, but genetic differentiation may be responsible for the distinction of lizards from Guana.

Original languageEnglish
Pages (from-to)111-116
Number of pages6
JournalBiotropica
Volume29
Issue number1
DOIs
StatePublished - 1997

Keywords

  • A. Ernestwilliamsi
  • Anolis cristatcllus
  • Evaporative water loss
  • Habitat aridity
  • Sauria

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