Strohm, Erhard and Herzner, Gudrun and Kaltenpoth, Martin and Boland, Wilhelm and Schreier, Peter and Geiselhardt, Sven and Peschke, Klaus and Schmitt, Thomas (2008) The chemistry of the postpharyngeal gland of female European beewolves. JOURNAL OF CHEMICAL ECOLOGY, 34 (5). pp. 575-583. ISSN 0098-0331,
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Females of the European beewolf, Philanthus triangulum, possess a large glove-shaped gland in the head, the postpharyngeal gland (PPG). They apply the content of the PPG to their prey, paralyzed honeybees, where it delays fungal infestation. Here, we describe the chemical composition of the gland by using combined GC-MS, GC-FTIR, and derivatization. The PPG of beewolves contains mainly long-chain unsaturated hydrocarbons (C23-C33), lower amounts of saturated hydrocarbons (C14-C33), and minor amounts of methyl-branched hydrocarbons (C17-C31). Additionally, the hexane-soluble gland content is comprised of small amounts of an unsaturated C25 alcohol, an unknown sesquiterpene, an octadecenylmethylester, and several long-chain saturated (C25, C27) and unsaturated (C23-C27) ketones, some of which have not yet been reported as natural products. Surprisingly, we found a dimorphism with regard to the major component of the PPG with some females having (Z)-9-pentacosene, whereas others have (Z)-9-heptacosene as their predominant component. The biological relevance of the compounds for the prevention of fungal growth on the prey and the significance of the chemical dimorphism are discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRIANGULUM F HYMENOPTERA; ANT CATAGLYPHIS-NIGER; PHILANTHUS-TRIANGULUM; CUTICULAR HYDROCARBONS; SOLITARY WASP; SEX-PHEROMONE; NESTMATE RECOGNITION; INSECT HYDROCARBONS; PARENTAL INVESTMENT; SPHECID WASP; antifungal; crabronidae; GC-FTIR; hymenoptera; Philanthus triangulum; postpharyngeal gland; PPG; Sphecidae |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie > Evolutionary Ecology (Prof. Dr. Erhard Strohm) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Nov 2020 10:04 |
| Last Modified: | 03 Nov 2020 10:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/30962 |
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