Polyandry increases offspring viability and mother productivity but does not decrease mother survival in Drosophila pseudoobscura.

Proceedings of the National Academy of Sciences of the United States of America
Patricia Adair GowatyWyatt W Anderson

Abstract

Polyandrous mating is common, but the benefits for females of polyandry remain controversial. To test whether mating with multiple males affects female fitness, we compared lifetime components of fitness of three experimental sets of Drosophila pseudoobscura females: monogamous females allowed to copulate one time (MOC); monogamous females held with a male over her entire life and experiencing many copulations (MMC); and polyandrous females with a different male over each day of their lives and also experiencing many copulations (PMC). Consistent with previous studies in this species, females in treatments in which multiple copulations occurred, MMC and PMC, had offspring with significantly higher egg-to-adult survival (i.e., offspring viability) and higher numbers of adult offspring (i.e., productivity) than MOC females, showing that multiple inseminations enhance offspring and mother fitness. In addition, although MMC females laid significantly more eggs than polyandrous (PMC) females, percent egg-to-adult survival and number of adult offspring were higher for PMC than MMC females, showing that polyandrous mating enhances the fitness of females more than multiply mating with only one male. Inconsistent with the cost of reprod...Continue Reading

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Citations

Sep 24, 2013·Best Practice & Research. Clinical Endocrinology & Metabolism·Jennifer C Regan, Linda Partridge
Jan 5, 2011·Proceedings of the National Academy of Sciences of the United States of America·Peter R Grant, B Rosemary Grant
Oct 12, 2010·Proceedings. Biological Sciences·Clarissa M HouseAllen J Moore
Oct 7, 2011·Proceedings. Biological Sciences·Elise HuchardPeter M Kappeler
May 7, 2011·Biological Reviews of the Cambridge Philosophical Society·Rachel A SlatyerMichael D Jennions
Sep 18, 2012·BMC Evolutionary Biology·Miguel BarbosaAnne E Magurran
Sep 11, 2014·Journal of Insect Science·Linda C Hernández DuranLuz S Fuentes Quintero
May 23, 2012·PloS One·Zoe E SquiresDevi Stuart-Fox
Mar 7, 2012·Ecology and Evolution·Therese Ann Markow
Sep 29, 2011·The Journal of Animal Ecology·Mikael MokkonenSuzanne C Mills
May 6, 2015·Ecology and Evolution·Celine H FrèreMartin J Whiting
May 26, 2012·Fly·Therese A MarkowSergio Castrezana
Apr 23, 2016·PloS One·Peter SchausbergerAndreas Walzer
Apr 11, 2019·Journal of Evolutionary Biology·Andreas SutterNina Wedell
Nov 27, 2019·Evolution; International Journal of Organic Evolution·Adam P Geiger, Julia B Saltz
Dec 23, 2016·Biology Letters·Graziella IossaPaul E Eady

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