Premating isolation is determined by larval-rearing substrates in cactophilic Drosophila mojavensis. V. Deep geographic variation in epicuticular hydrocarbons among isolated populations

The American Naturalist
William J Etges, M A Ahrens

Abstract

Adult epicuticular hydrocarbon variation of 14 geographically isolated populations of cactophilic Drosophila mojavensis was assessed to further investigate mechanisms of sexual isolation. Hydrocarbon transfer experiments demonstrated that these compounds are part of the mate recognition system in this species. Sixteen of the 23 epicuticular hydrocarbon components studied differed in amounts between males and females, and 13 differed in quantity between the geographic regions encompassing Baja California and mainland Mexico (Sonora and Sinaloa). Eight hydrocarbon components, seven of which differed in quantity between sexes, showed significant sex-by-region interactions, indicating region-specific sex reversals in hydrocarbon quantities. Such regional variation in epicuticular hydrocarbon profiles suggests that these hydrocarbon differences have also evolved in D. mojavensis since this species invaded mainland Sonora and Sinaloa from Baja California by switching host plants, in addition to a number of key genetic, behavioral, and life-history characters.

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Citations

May 3, 2005·Journal of Theoretical Biology·John A Byers
Oct 15, 2003·Behavioural Processes·Kevin M.C. O'Dell
Jun 28, 2011·BMC Evolutionary Biology·Cássia C de OliveiraWilliam J Etges
May 28, 2004·BMC Genetics·Regina StatenMohamed A F Noor
Dec 24, 2013·Genetica·Akanksha Singh, Bashisth N Singh
Oct 29, 2013·Annual Review of Entomology·Sean P Mullen, Kerry L Shaw
Nov 29, 2015·Molecular Ecology·William J EtgesAllen G Gibbs
Nov 18, 2011·The American Naturalist·Russell Bonduriansky
Oct 11, 2014·Evolution; International Journal of Organic Evolution·Jackson H JenningsAnneli Hoikkala
Mar 11, 2006·Evolution; International Journal of Organic Evolution·Jerry A CoyneEmilio Rolán-Alvarez
May 12, 2007·Evolution; International Journal of Organic Evolution·William J EtgesMichael G Ritchie
Aug 5, 2010·Evolution; International Journal of Organic Evolution·William J EtgesMichael G Ritchie
Jul 3, 2013·Evolution; International Journal of Organic Evolution·Gilbert SmithMichael G Ritchie
Jan 24, 2014·Ecology and Evolution·Angela McGaughranRalf J Sommer
Sep 12, 2009·Evolution; International Journal of Organic Evolution·Jackson H Jennings, William J Etges
Dec 3, 2014·Molecular Ecology·William J EtgesShripad Tuljapurkar
Oct 13, 2009·Evolution; International Journal of Organic Evolution·Lucia Kwan, Howard D Rundle
Jul 25, 2020·Science Advances·Mohammed A KhallafMarkus Knaden
Sep 17, 2020·Science Advances·Mohammed A KhallafMarkus Knaden

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