Vergleichende Untersuchung der Bürzeldrüsenlipide von Möwen. Zusammensetzung der Bürzellipide der Lachmöwe (Larus ridibundus), Heringsmöwe (Larus fuscus) und Silbermöwe (Larus argentatus)

The uropygial gland fats from the black-headed, the lesser black-backed and the herring gull, investigated by GLC/MS-combination technique, are shown to be complex mixtures of ester waxes. Among the wax acids octanoic acid is the main component, followed by homologous series of 2-methyl-, 2,6-, 2,8-, 2,10- and 2,12-dimethyl- as well as 2,4,8-, 2,6,8-, 2,6,10- and 2,6,12-trimethyl substituted fatty acids with chain lengths from C₈-C₁₅. As alcoholic components homologous series of primary alkanols without and with methyl-substitution in 2-, 4-, 2,6-, 2,8-, 2,10-, 2,12-, 2,6,10- and 2,6,12-position and chain lengths from C₁₁-C₁₈ could be detected.