Inferring the strength of directional selection on armor plates in Lake Washington stickleback while accounting for migration and drift

Contemporary evolution allows us to investigate how natural selection drives phenotypic and genotypic evolution in nature. Recent advances in molecular genetics have identified causative genes underlying adaptive traits, enabling estimation of selection coefficients at these loci. However, estimating selection is challenging when populations receive migrants from genetically and phenotypically distinct populations. With genome-wide data now allowing estimation of migration rates and effective population sizes, these demographic parameters can be integrated into models for measuring selection. In Lake Washington, USA, the frequency of the completely plated morph of the threespine stickleback (Gasterosteus aculeatus) increased from 1957 to 2005, plausibly due to increased trout predation pressure caused by enhanced water clarity. Here, we estimated the selection coefficient at a major locus responsible for the plate morph using historical data, taking migration and genetic drift into cons..., , , # Data from: Inferring the strength of directional selection on armor plates in Lake Washington stickleback while accounting for migration and drift

In Lake Washington, USA, the frequency of the completely plated morph of the threespine stickleback (Gasterosteus aculeatus) increased from 1957 to 2005. Here, we sampled the stickleback in 2022 and investigated the temporal change in plate evolution together with previously published 2016 data.

#### General information

1. Title of Dataset: Inferring the strength of directional selection on armor plates in Lake Washington stickleback while accounting for migration and drift
2. Author Information

* Principal Investigator\
Name: Jun Kitano\
Institution: National Institute of Genetics\
Address: Mishima, Shizuoka, Japan\
Email: [[e-mail]](mailto:[e-mail])
* Data curation\
Name: Yo Yamasaki\
Institution: National Institute of Genetics\
Address: Mishima, Shizuoka, Japan\
Email: [[e-mail]](mailto:yam...,