Genetic variation in “first” male effects on egg laying and remating by femaleDrosophila melanogaster |
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Authors: | Philip M Service Russell E Vossbrink |
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Institution: | (1) Department of Biological Sciences, University, Box 5640, Northern Arizona, 86011 Flagstaff, Arizona |
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Abstract: | MaleDrosophila melanogaster from lines artificially selected to have divergent life histories were tested to determine if they differed, in their effects
on female reproductive behavior. During the first 5 days after mating, males from short-generation populations caused females
to lay eggs at a faster rate than did males from long-generation populations. This faster oviposition rate resulted in greater
numbers of adult progeny produced by short-generation males. During the period 6–21 days after mating, long-generation males
fathered more adult progeny. Females that were first mated to short-generation males were more likely to remate than were
females first mated to long-generation males. Rematings were interrupted in order to prevent transfer of second-male accessory
fluid and sperm. Females that were first mated to long-generation males produced more progeny after interrupted matings than
did females that were first mated to short-generation males. |
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Keywords: | Drosophila melanogaster egg laying remating sperm competition |
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