Multiple mating and reproductive skew in parental and introgressed females of the live-bearing fish Xiphophorus birchmanni.

ABSTRACT: Just as mating patterns can promote speciation or hybridization, the presence of hybridization can shape mating patterns within a population. In this study, we characterized patterns of multiple mating and reproductive skew in a naturally hybridizing swordtail fish species, Xiphophorus birchmanni. We quantified multiple mating using microsatellite markers to genotype embryos from 43 females collected from 2 wild populations. We also used a suite of single-nucleotide polymorphism markers to categorize females and their inferred mates as either parental X. birchmanni or as introgressed individuals, which carried alleles from a sister species, X. malinche. We found that parental and introgressed X. birchmanni females mated multiply with both parental and introgressed males. We found no differ

SUBMITTER: Paczolt KA 

PROVIDER: S-EPMC4357810 | biostudies-literature | 2015 Jan-Feb

REPOSITORIES: biostudies-literature