PSYCH 3T03 Chapter Notes - Chapter 6: Gerridae, Coevolution
13 Apr 2018
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Article 6: antagonistic coevolution between the sexes in a group of insects. Studied e ects of male and female armament (clasping and anti-clasping) morphologies) on outcome of antagonistic mating interactions. Assessed independent e ects of both species-speci c level of arms escalation and small imbalances in amount of arms between sexes (i. e. the consequences of sexual arms race) Evolutionary change in balance of armament between sexes (not species-speci c level of escalation) resulted in evolutionary change in outcome of sexually antagonistic interactions (e. g. mating rate) Thus, plot coevolutionary trajectory to show exaggeration in male arms that enhance persistence and in female arms that enhance resistance- if coevolutionary trajectory re ects balance of arms, evolutionary deviation away from line should a ect interactions. : hypothesis = females becoming more armed results in greater ability to resist and thus, promote decline in costly matings (i. e. pre-mating struggles) Wednesday, february 28, 2018: tested four behavioural traits .
