Chemical signals in desert lizards: Are femoral gland secretions of male and female spiny-tailed lizards, Uromastyx aegyptia microlepis adapted to arid conditions?

José Martín, Aurora M. Castilla, Pilar López, Mohammed Al-Jaidah, Salman F. Al-Mohannadi, Ahmad Amer M Al-Hemaidi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Many lizards use femoral gland secretions in intraspecific chemical communication, but specific compounds have been identified in only a few species. Chemical composition of secretions may depend on phylogeny, but it may also evolve to maximize efficacy of signals in a given environment. In deserts, the extreme dry and hot environmental conditions are hostile for chemical signals and, therefore, we expected desert lizards to have secretions with highly stable compounds. Using GC-MS, we identified 74 lipophilic compounds in femoral secretions of male and female spiny-tailed lizards, Uromastyx aegyptia microlepis (Fam. Agamidae), from the Qatar desert. Compounds included mainly steroids and fatty acids, but also terpenoids, ketones, tocopherol, aldehydes and alcohols. We found differences between males and females; males had higher proportions of fatty acids and tocopherol, but lower proportions of ketones than females. Contrary to expectations, the most abundant compounds were not stable in the desert climatic conditions at the surface. However, secretions could be rather adapted to microclimatic conditions inside burrows where these lizards spend long periods of time. We suggest that in addition to phylogenetic and environmental characteristics, we should know the ecology of a lizard species before making generalizations on the potential characteristics of its chemical signals.

Original languageEnglish
Pages (from-to)192-198
Number of pages7
JournalJournal of Arid Environments
Volume127
DOIs
Publication statusPublished - 1 Apr 2016

Fingerprint

dry environmental conditions
thighs
lizard
secretion
lizards
deserts
desert
ketone
ketones
tocopherols
fatty acid
Qatar
Agamidae
fatty acids
phylogeny
steroid
aldehyde
burrow
burrows
terpenoids

Keywords

  • Femoral secretions
  • Intraspecific communication
  • Lizards
  • Qatar desert
  • Reptiles
  • Uromastyx

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Earth-Surface Processes

Cite this

Chemical signals in desert lizards : Are femoral gland secretions of male and female spiny-tailed lizards, Uromastyx aegyptia microlepis adapted to arid conditions? / Martín, José; Castilla, Aurora M.; López, Pilar; Al-Jaidah, Mohammed; Al-Mohannadi, Salman F.; Al-Hemaidi, Ahmad Amer M.

In: Journal of Arid Environments, Vol. 127, 01.04.2016, p. 192-198.

Research output: Contribution to journalArticle

Martín, José ; Castilla, Aurora M. ; López, Pilar ; Al-Jaidah, Mohammed ; Al-Mohannadi, Salman F. ; Al-Hemaidi, Ahmad Amer M. / Chemical signals in desert lizards : Are femoral gland secretions of male and female spiny-tailed lizards, Uromastyx aegyptia microlepis adapted to arid conditions?. In: Journal of Arid Environments. 2016 ; Vol. 127. pp. 192-198.
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