Intraspecific geographic variation of fragrances acquired by orchid bees in native and introduced populations.

Journal of Chemical Ecology
Santiago R RamírezNeil D Tsutsui

Abstract

Male orchid bees collect volatiles, from both floral and non-floral sources, that they expose as pheromone analogues (perfumes) during courtship display. The chemical profile of these perfumes, which includes terpenes and aromatic compounds, is both species-specific and divergent among closely related lineages. Thus, fragrance composition is thought to play an important role in prezygotic reproductive isolation in euglossine bees. However, because orchid bees acquire fragrances entirely from exogenous sources, the chemical composition of male perfumes is prone to variation due to environmental heterogeneity across habitats. We used Gas Chromatography/Mass Spectrometry (GC/MS) to characterize the perfumes of 114 individuals of the green orchid bee (Euglossa aff. viridissima) sampled from five native populations in Mesoamerica and two naturalized populations in the southeastern United States. We recorded a total of 292 fragrance compounds from hind-leg extracts, and found that overall perfume composition was different for each population. We detected a pronounced chemical dissimilarity between native (Mesoamerica) and naturalized (U.S.) populations that was driven both by proportional differences of common compounds as well as th...Continue Reading

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Citations

Feb 14, 2012·Journal of Chemical Ecology·Dong-Hwan ChoeNeil D Tsutsui
Nov 18, 2015·Journal of Chemical Ecology·Tamara PokornyThomas Eltz
Jun 1, 2016·Annals of Botany·Molly C Hetherington-Rauth, Santiago R Ramírez
Sep 2, 2016·Ecology Letters·Marjorie G WeberSantiago R Ramírez
Feb 7, 2019·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·T EltzT Mende
Aug 16, 2018·Current Zoology·Laurel R YoheUNKNOWN Handling editor: Rebecca Fuller
Feb 3, 2021·Biology Letters·E Dale BroderRobin M Tinghitella
Mar 20, 2021·Archives of Sexual Behavior·Jaroslava Varella ValentovaMarco Antonio Correa Varella

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Methods Mentioned

BETA
dissection
dissecting
MDS

Software Mentioned

primer
Chemstation
ANOSIM
vegan
SIMPER
ecodist
R

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