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Pollinator attracting odour signals in sexually deceptive orchids of the Ophrys fusca group

Title data

Stökl, Johannes ; Paulus, Hannes F. ; Dafni, Amots ; Schulz, Christoph ; Francke, Wittko ; Ayasse, Manfred:
Pollinator attracting odour signals in sexually deceptive orchids of the Ophrys fusca group.
In: Plant Systematics and Evolution. Vol. 254 (2005) Issue 1/2 . - pp. 105-120.
ISSN 1615-6110
DOI: https://doi.org/10.1007/s00606-005-0330-8

Abstract in another language

We investigated patterns of volatiles of several allopatric and sympatric species of the Ophrys fusca group and one species of the O. mammosa/sphegodes group pollinated by either Andrena nigroaenea or A. flavipes, using electrophysiology (gas chromatography coupled with electroantennography; GC-EAD) and chemical analyses. We found 52 GC-EAD active compounds, mainly saturated and unsaturated hydrocarbons with chain lengths of 21 to 31, aldehydes, an ester, and an acid. Based on the relative proportions of all GC-EAD active compounds, the investigated species were compared using various statistical methods (ANOVA, principle component analyses, discriminant function analyses and cluster analyses). Our results show that Ophrys species with the same pollinator – independent of their phylogenetic relationship–use the same volatiles for pollinator attraction. Differences between the species mainly involve different quantitative patterns of volatiles. Our results are in congruence with previous studies that showed different odour bouquets to be responsible for the specific attraction of different pollinators and that alkanes and alkenes are most important for pollinator attraction.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER147462
Keywords: Pollination by sexual deception; pollinator attraction; floral odour; GC-EAD; Orchidaceae; Andrena; Ophrys
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology II - Evolutionary Animal Ecology > Chair Animal Ecology II - Evolutionary Animal Ecology - Univ.-Prof. Dr. Sandra Steiger
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: No
DDC Subjects: 500 Science
Date Deposited: 16 Apr 2019 07:52
Last Modified: 16 Apr 2019 07:52
URI: https://eref.uni-bayreuth.de/id/eprint/48415