Covariance among premating, post-copulatory and viability fitness components in Drosophila melanogaster and their influence on paternity measurement

Journal of Evolutionary Biology
Elizabeth M Droge-YoungScott Pitnick

Abstract

In polyandrous mating systems, male fitness depends on success in premating, post-copulatory and offspring viability episodes of selection. We tracked male success across all of these episodes simultaneously, using transgenic Drosophila melanogaster with ubiquitously expressed green fluorescent protein (i.e. GFP) in a series of competitive and noncompetitive matings. This approach permitted us to track paternity-specific viability over all life stages and to distinguish true competitive fertilization success from differential early offspring viability. Relationships between episodes of selection were generally not present when paternity was measured in eggs; however, positive correlations between sperm competitive success and offspring viability became significant when paternity was measured in adult offspring. Additionally, we found a significant male × female interaction on hatching success and a lack of repeatability of offspring viability across a focal male's matings, which may underlay the limited number of correlations found between episodes of selection.

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Citations

Nov 23, 2013·Proceedings. Biological Sciences·Jonathan P EvansNeil J Gemmell
Jan 15, 2014·Evolution; International Journal of Organic Evolution·Benjamin PélissiéPatrice David
Oct 21, 2014·Evolution; International Journal of Organic Evolution·Greta Bocedi, Jane M Reid
Nov 6, 2013·Journal of Insect Physiology·Outi Ala-HonkolaScott Pitnick
Nov 27, 2014·The Journal of Heredity·Michael ReinhartAnthony C Fiumera
Jun 28, 2016·Evolution; International Journal of Organic Evolution·Alessandro DevigiliAndrea Pilastro
Apr 11, 2017·Evolution; International Journal of Organic Evolution·Stefan LüpoldWen Bo Liao
Aug 30, 2019·Journal of Evolutionary Biology·Susanne ZajitschekMollie K Manier
May 11, 2013·The Journal of Experimental Biology·Hannah Ritchie, Dustin J Marshall

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