McGill University
Ph.D. candidate
Supervisor: Andrew Hendry
Rowan Barrett
Rowan Barrett, McGill University
Start: 2012-09-01
End: 2016-05-01
Personal page

Project

Parallelism in ecological speciation of Threespine Stickleback (Gasterosteus aculeatus)
I am interested in the predictability of the evolution of new species (speciation) through natural selection. A great way to explore this question is through the use of naturally-replicated, parallel divergences, such as those found in populations of threespine stickleback (Gasterosteus aculeatus) on Vancouver Island. In multiple, independent watersheds, this species has split into two very different ecomorphs: a more benthic stream form, and a more limnetic lake form. By studying the degree to which the replicate populations have followed the same evolutionary path, I hope to better characterize determinism in natural selection and speciation.

Keywords

ecological speciation, evolutionary genetics, divergent selection

Publications

1- Slipping through the Cracks: The Taxonomic Impediment Conceals the Origin and Dispersal of Haminoea japonica, an Invasive Species with Impacts to Human Health
Dieta Hanson, Samantha Cooke, Yayoi Hirano, Manuel A. E. Malaquias, Fabio Crocetta, �ngel Valdés
2013 PLoS ONE

2- Cryptic diversity ofMelanochlamyssea slugs (Gastropoda, Aglajidae) in the North Pacific
Cooke, Samantha, Dieta Hanson, Yayoi Hirano, Elysse Ornelas-Gatdula, Terrence M. Gosliner, Alexey V. Chernyshev, Ángel Valdés
2014 Zoologica Scripta

3- BIOFILM GRAZING IN A HIGHER VERTEBRATE: THE WESTERN SANDPIPER,CALIDRIS MAURI
Kuwae, Tomohiro, Peter G. Beninger, Priscilla Decottignies, Kimberley J. Mathot, Dieta R. Lund, Robert W. Elner
2008 Ecology

4- Sediment in Stomach Contents of Western Sandpipers and Dunlin Provide Evidence of Biofilm Feeding
Mathot, Kimberley J., Dieta R. Lund, Robert W. Elner
2010 Waterbirds

5- Population genetics of Haminoea (Haloa) japonica Pilsbry, 1895, a widespread non-indigenous sea slug (Mollusca: Opisthobranchia) in North America and Europe
Hanson, Dieta, Yayoi Hirano, Ángel Valdés
2012 Biological Invasions

6- Molecular divergence between two sympatric species of Dondice (Mollusca: Nudibranchia) with distinct feeding specializations
Gonzalez, Luis, Dieta Hanson, Ángel Valdés
2013 Journal of the Marine Biological Association of the United Kingdom