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Title: Age-related changes in cuticular hydrocarbon bouquet and same-sex sexual behavior of mason bee males (Osmia bicornis and O. cornuta) (Dataset)
Author(s): Seidelmann, Karsten
Issue Date: 2023-09-29
Type: Dataset
Language: English
Subjects: cuticular hydrocarbons
sex-specific bouquets
mistaken identity
courtship inhibiting pheromone
Abstract: Finding a mate is the central task in the lives of many male insects. In many solitary bees, sexual competition between males is high due to monandry and a pronounced male-biased sex ratio. Males searching for females will inspect and mount any object of suitable size and habitus. Species, sex, and reproductive status are encoded in the bee’s bouquet of cuticular hydrocarbons (CHCs) and can only be identified at a short distance from the object encountered. In two species of mason bees, this CHC-based system for recognizing newly emerged, virgin females is not error-free. Newly emerged individuals of both sexes carry similar CHC bouquets, facilitating the confusion of newly emerged males with newly emerged, virgin females. Misidentification leads to same-sex sexual behavior by males seeking a mate. However, individuals of both sexes modify their CHC bouquet sex-specifically within a few days. The changes in the bouquet prevent further sexual harassment. In addition, within three days of emergence, males begin to release species-specific carboxylic acid esters, which may act as courtship-inhibiting pheromones to extend the range of their sex-specific scent tag. Due to the pronounced protandry of both species, SSB is restricted to the early flight season, when females are not yet present, and imposes no apparent cost on the two males involved.
Open Access: Open access publication
License: (CC BY-NC 3.0 DE) Creative Commons Attribution NonCommercial 3.0 Germany(CC BY-NC 3.0 DE) Creative Commons Attribution NonCommercial 3.0 Germany
Appears in Collections:Institut für Biologie

Files in This Item:
File Description SizeFormat 
Compound-List.txtDocumentation file3.58 kBTextView/Open
Description.rtfDocumentation file56.99 kBRTFView/Open
Method_bicornis.txtDocumentation file44.4 kBTextView/Open
Method_cornuta.txtDocumentation file59.35 kBTextView/Open
Osmia-bicornis_CHC.txtData file20.23 kBTextView/Open
Osmia-bicornis_male-esters.txtData file2.3 kBTextView/Open
Osmia-cornuta_CHC.txtData file17.91 kBTextView/Open
Osmia-cornuta_male-esters.txtData file2.72 kBTextView/Open
README.txtDocumentation file2.21 kBTextView/Open