Journal of Chemical Ecology

, Volume 29, Issue 3, pp 629–638

Chemical Composition of Precloacal Secretions of Two Liolaemus fabiani Populations: Are They Different?

Authors

  • Claudio M. Escobar
    • Departamento de Ciencias Ecológicas, Facultad de CienciasUniversidad de Chile
  • Carlos A. Escobar
    • Facultad de Ecología y Recursos NaturalesUniversidad Nacional Andrés Bello
    • Departamento de Ciencias Ecológicas, Facultad de CienciasUniversidad de Chile
  • Hermann M. Niemeyer
    • Departamento de Ciencias Ecológicas, Facultad de CienciasUniversidad de Chile
Article

DOI: 10.1023/A:1022858919037

Cite this article as:
Escobar, C.M., Escobar, C.A., Labra, A. et al. J Chem Ecol (2003) 29: 629. doi:10.1023/A:1022858919037

Abstract

The chemical composition of secretions of precloacal pores from two populations of the lizard Liolaemus fabiani (Puilar and Punta-Brava) were compared. This is an endemic species from the Atacama Salt Flat (26°46'S 68°14'W; 2400 m) in northern Chile, restricted to the internal lakes of the salt flat. Interpopulational differences in the chemical composition of the secretions were expected considering that populations have genetic differences and are subject to different thermal conditions. By using GC-MS, a total of 44 compounds were found belonging to three categories: n-alkanes, long-chain carboxylic acids, and steroids. Six compounds were found in all the individuals studied: tetradecanoic, pentadecanoic, hexadecanoic, hexadecenoic, octadecanoic, and octadecenoic acids. The secretions of both populations had similar types and proportions of the different compounds, except for cholesterol and hexanoic acid, which were more abundant in the Puilar population. These differences can be ascribed to the different environmental conditions to which populations are subjected. The adaptive meaning of these differences is discussed.

Precloacal secretion lizard Liolaemus fabiani

Copyright information

© Plenum Publishing Corporation 2003