Chemical composition of precloacal secretions of Liolaemus lizards

Citation
Ca. Escobar et al., Chemical composition of precloacal secretions of Liolaemus lizards, J CHEM ECOL, 27(8), 2001, pp. 1677-1690
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF CHEMICAL ECOLOGY
ISSN journal
0098-0331 → ACNP
Volume
27
Issue
8
Year of publication
2001
Pages
1677 - 1690
Database
ISI
SICI code
0098-0331(200108)27:8<1677:CCOPSO>2.0.ZU;2-0
Abstract
Interspecific chemical variation of precloacal pore secretions of Liolaemus lizards was characterized in 20 species, and intraspecific chemical variat ion was characterized using nine individuals of L. bellii. The latitude (Ch ile, 18 degrees to 33 degrees South latitude) and altitude (100 to 4350 m.a .s.l.) of the capture sites were recorded, as well as the number of precloa cal pores of each lizard. Secretions were analyzed by GC-MS. A total of 49 compounds were found distributed among the 20 species of Liolaemus. Differe nt chemical patterns occurred at intra- and interspecific levels. Compounds belonged to three main families: n-alkanes, long chain carboxylic acids, a nd steroids. Cholesterol and five carboxylic acids (tetradecanoic, hexadeca noic, hexadecenoic, octadecanoic, and Z-9-octadecenoic) appeared in all spe cies. The number of precloacal pores correlated positively with altitude an d negatively with latitude, suggesting that lizards produce more secretions under harsh environments.