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Intraspecific Geographic Variation of Fragrances Acquiredby Orchid Bees in Native and Introduced Populations

Show simple item record R. Ramirez, Santiago Eltz, Thomas Fritzsch, Falko Pemberton, Robert G. Pringle, Elizabeth D. Tsutsui, Neil 2016-10-31T16:56:06Z 2016-10-31T16:56:06Z 2010-07-16
dc.identifier.citation Harvard Style es_CR
dc.identifier.other doi:10.1007/s10886-010-9821-3
dc.description.abstract Male orchid bees collect volatiles, from bothfloral and non-floral sources, that they expose as phero-mone analogues (perfumes) during courtship display. Thechemical profile of these perfumes, which includes terpenesand aromatic compounds, is both species-specific anddivergent among closely related lineages. Thus, fragrancecomposition is thought to play an important role inprezygotic reproductive isolation in euglossine bees. How-ever, because orchid bees acquire fragrances entirely fromexogenous sources, the chemical composition of maleperfumes is prone to variation due to environmentalheterogeneity across habitats. We used Gas Chromatog-raphy/Mass Spectrometry (GC/MS) to characterize theperfumes of 114 individuals of the green orchid bee(Euglossaaff.viridissima) sampled from five nativepopulations in Mesoamerica and two naturalized popula-tions in the southeastern United States. We recorded a totalof 292 fragrance compounds from hind-leg extracts, andfound that overall perfume composition was different foreach population. We detected a pronounced chemicaldissimilarity between native (Mesoamerica) and naturalized(U.S.) populations that was driven both by proportionaldifferences of common compounds as well as the presenceof a few chemicals unique to each population group. Despitethese differences, our data also revealed remarkable qualita-tive consistency in the presence of several major fragrancecompounds across distant populations from dissimilar hab-itats. In addition, we demonstrate that naturalized bees areattracted to and collect large quantities of triclopyr 2-butoxyethyl ester, the active ingredient of several commer-cially available herbicides. By comparing incidence valuesand consistency indices across populations, we identifyputative functional compounds that may play an importantrole in courtship signaling in this species of orchid bee es_CR
dc.description.sponsorship Thisresearch was partly supported by USDA grant NRI-CGP-2008-35302-04680 to NDT es_CR
dc.language.iso en_US es_CR
dc.publisher J Chem Ecol es_CR
dc.relation.ispartofseries 36;pages 873-884
dc.subject Hymenoptera.Monoterpenes.Sesquiterpenes.Pheromone evolution.Euglossini.Invasive species.Orchids.Bees.Triclopyr BEE es_CR
dc.title Intraspecific Geographic Variation of Fragrances Acquiredby Orchid Bees in Native and Introduced Populations es_CR
dc.type Article es_CR

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