Multiple paternity in different populations of the sailfin molly, Poecilia latipinna

In: Animal Biology
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  • 1 1University of Potsdam, Institute of Biochemistry and Biology, Unit of Evolutionary Biology & Systematic Zoology, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
  • | 2 2Department of Zoology, University of Oklahoma, 730 Van Vleet Oval, Norman, OK 73019, USA
  • | 3 3Department of Biology, North Carolina State University, 127 David Clark Labs, Raleigh, NC 27695-7617, USA
  • | 4 4Department of Ecology & Evolution, University of Frankfurt, Siesmayerstrasse 70a, 60054 Frankfurt am Main, Germany
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Rates of multiple paternities were investigated in the sailfin molly (Poecilia latipinna), using eight microsatellite loci. Genotyping was performed for offspring and mothers in 40 broods from four allopatric populations from the south-eastern U.S.A. along a geographic stretch of 1200 km in west-east direction and approximately 200 km from north to south. No significant differences regarding rates of multiple paternities were found between populations despite sample populations stemming from ecologically divergent habitats. Even the most conservative statistical approach revealed a minimum of 70% of the broods being sired by at least two males, with an average of 1.80-2.95 putative fathers per brood. Within broods, one male typically sired far more offspring than would be expected under an assumed equal probability of all detected males siring offspring.

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