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Lipophilic compounds in femoral secretions of males and females of the El Hierro giant lizard Gallotia simonyi (Lacertidae)

AuthorsMartín Rueda, José ; Martínez-Silvestre, Albert; López Martínez, Pilar ; Ibáñez, Alejandro; Rodríguez-Domínguez, M.T.; Verdaguer, I.
Intersexual variations
Canary Islands
Femoral secretions
Gallotia simonyi
Issue DateAug-2015
CitationBiochemical Systematics and Ecology 61: 286-292 (2015)
Abstract© 2015 Elsevier Ltd. Many lizards use femoral gland secretions in reliable intraspecific communication. Based on mass spectra, obtained by GC-MS, we found 57 lipophilic compounds in femoral secretions of males and females of El Hierro giant lizards, Gallotia simonyi (fam. Lacertidae). Compounds included steroids (mainly cholesterol) and fatty acids ranging between n-C<inf>16</inf> and n-C<inf>22</inf> (mainly hexadecanoic and octadecanoic acids), followed by aldehydes, alcohols, ketones, squalene and waxy esters. There were important intersexual differences in the presence, abundance and number of compounds (more numerous in males). Males had higher proportions of the most odoriferous compounds (fatty acids and aldehydes), while females had higher proportions of more stable compounds (steroids, waxy alcohols, waxy esters and terpenoids). This suggests sexual differences in function of femoral secretions. In addition, some compounds could reflect the physiological state, allowing monitoring health of lizards from secretions samples, which is especially important given the critical conservation status of this lizard.
Identifiersdoi: 10.1016/j.bse.2015.06.027
issn: 0305-1978
Appears in Collections:(MNCN) Artículos
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