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

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 prot...

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Bibliographic Details
Published in:Journal of evolutionary biology 2012-08, Vol.25 (8), p.1555-1563
Main Authors: DROGE‐YOUNG, E. M., MANIER, M. K., LÜPOLD, S., BELOTE, J. M., PITNICK, S.
Format: Article
Language:English
Subjects:
Animal reproduction
Animals
Animals, Genetically Modified
Drosophila melanogaster - genetics
Drosophila melanogaster - physiology
Evolutionary biology
Female
Insects
Male
post‐copulatory sexual selection
Reproduction - physiology
reproductive traits
Sexual Behavior, Animal - physiology
sexual selection
sperm competition
Survival Analysis
viability selection
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Summary: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.
ISSN:1010-061X
1420-9101
DOI:10.1111/j.1420-9101.2012.02540.x