Mate Choice
Natural Selection and Mating Preferences
Criticisms of the Evolutionary Perspective
Desirable Characteristics in Others
Relationship Growth
Close Relationships and Culture
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Updated: Jul 12, 2026

Assessing Differences in Sperm Competitive Ability in Drosophila
Published on: August 22, 2013
A Qvarnström1, T Pärt, B C Sheldon
1Department of Animal Ecology, Evolutionary Biology Centre, Uppsala University, Sweden. annaq@biomail.ucsd.edu
Female collared flycatchers show adaptive plasticity in mate preferences. Their preference for male forehead patch size varies seasonally, impacting reproductive success and investment.
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