Comparison of the Chemical Compositions of the Cuticle and Dufour's Gland of Two Solitary Bee Species from Laboratory and Field Conditions

Journal of Chemical Ecology
Theresa L Pitts-SingerWilliam P Kemp

Abstract

Species-specific biochemistry, morphology, and function of the Dufour's gland have been investigated for social bees and some non-social bee families. Most of the solitary bees previously examined are ground-nesting bees that use Dufour's gland secretions to line brood chambers. This study examines the chemistry of the cuticle and Dufour's gland of cavity-nesting Megachile rotundata and Osmia lignaria, which are species managed for crop pollination. Glandular and cuticular lipid compositions were characterized and compared to each other and according to the nesting experience of adult females. Major lipid classes found were hydrocarbons, free fatty acids, and wax esters. Many components were common to the cuticle and Dufour's glands of each species, yet not identical in number or relative composition. Wax esters and fatty acids were more prevalent in Dufour's glands of M. rotundata than on cuticles. Wax esters were more abundant on cuticles of O. lignaria than in Dufour's glands. In both species, fatty acids were more prevalent in glands of field-collected females compared to any other sample type. Chemical profiles of cuticles and glands were distinct from each other, and, for O. lignaria, profiles of laboratory-maintained bee...Continue Reading

References

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Mar 21, 2009·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·James S BucknerWilliam P Kemp
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Citations

Jun 8, 2018·Journal of Chemical Ecology·Stephen J MartinFalko P Drijfhout
May 8, 2018·International Journal of Molecular Sciences·Kristian PetersNicole M van Dam
Feb 4, 2021·Scientific Reports·Nathan T DerstineEtya Amsalem

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Methods Mentioned

BETA
PCA
dissections

Software Mentioned

MASS
R
SAS

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