| Title: | "Enantioselective preference and high antennal sensitivity for (-)-Ipsdienol in scent-collecting male orchid bees, Euglossa cyanura" |
| Author(s): | Schorkopf DL; Mitko L; Eltz T; |
| Address: | "Department for Neurobiology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria" |
| DOI: | 10.1007/s10886-011-0010-9 |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "Male neotropical orchid bees (Euglossini) collect volatile chemicals from their environment, store them in tibial pouches, and later expose their 'perfumes' during a courtship display. Here, we showed that enantiomeric selectivity plays an important role in the choice of volatiles by male Euglossa cyanura in southern Mexico, and that behavioral selectivity is linked to antennal sensitivity. In field bioassays with equal concentrations of (+)-ipsdienol, (-)-ipsdienol, and racemate, males preferred the (-)-isomer to the racemate, while neglecting the (+)-isomer. Correspondingly, antennae of male E. cyanura showed larger electroantennographic responses to the (-)-isomer than to the (+)-isomer. In comparison, antennae of male Euglossa mixta, which are not attracted to any form of ipsdienol, showed lower electroantennographic responses to (-)-ipsdienol than did antennae of E. cyanura, and also did not differ in sensitivity with respect to the (+)- or (-)-isomers. We suggest that (-)-ipsdienol is an important component of perfume signals in male E. cyanura, which have undergone selection in favor of increased antennal sensitivity to that enantiomer" |
| Keywords: | "Acyclic Monoterpenes Animals Arthropod Antennae/*physiology Bees/*physiology Behavior, Animal Male Mexico Monoterpenes/*metabolism Octanols/*metabolism Pheromones/*metabolism Smell Stereoisomerism;" |
| Notes: | "MedlineSchorkopf, Dirk Louis P Mitko, Lukasz Eltz, Thomas eng 2011/08/25 J Chem Ecol. 2011 Sep; 37(9):953-60. doi: 10.1007/s10886-011-0010-9. Epub 2011 Aug 24" |
