What explains rare and conspicuous colours in a snail? A test of time-series data against models of drift, migration or selection

@inproceedings{Johannesson2017WhatER,
  title={What explains rare and conspicuous colours in a snail? A test of time-series data against models of drift, migration or selection},
  author={Karen Johannesson and Roger K Butlin},
  booktitle={Heredity},
  year={2017}
}
It is intriguing that conspicuous colour morphs of a prey species may be maintained at low frequencies alongside cryptic morphs. Negative frequency-dependent selection by predators using search images (‘apostatic selection’) is often suggested without rejecting alternative explanations. Using a maximum likelihood approach we fitted predictions from models of genetic drift, migration, constant selection, heterozygote advantage or negative frequency-dependent selection to time-series data of… CONTINUE READING