Roland Vergilino

Université de Montréal
Postdoctoral fellow candidate

Supervisor: Bernard Angers
Start: 2014-03-03
End: 2015-03-02
Personal page
Personal page 2

Project

Population genetics and origins of different biotypes of the Chrosomus eos-neogaeus complex
The northern redbelly dace (Chrosomus eos) and the finescale dace (Chrosomus neogaeus) may hybridize in North America. The hybrid lineages are known to reproduce by gynogenesis which is a particular type of parthenogenesis where the sperm of one of the parental species is needed to induce the development of the progeniture but the sperm genome is not always incorporated to the hybrid genome. Triploid hybrids and cytoplasmic hybrids (cybrids) may be produced when the sperm of one of the parental species enters the egg of an hybrid and its genome is added to the hybrid genome. While hybrids reproduce clonally, the cybrid biotype seems to reproduce sexually. Cybrids can be found in sympatry with one the parental species. Some studies have demonstrated that a particular drainage bassin may be "invaded" by a single clonal lineage and different clonal lineages have been described across North America. However few is know about the evolutionary origins of these different clonal lineages, especially in the Quebec region. There is a lack of knowledge of how is produced the cybrid biotype and how it interacts with the sympatric parental species. The purpose of my project is to study, using molecular markers, the population genetics processes underlying the production and the maintenance of the hybrid and cybrid biotypes in the Quebec region.

Publications

1- Cold adaptation in geographical populations of Drosophila melanogaster: phenotypic plasticity is more important than genetic variability
AYRINHAC, A., V. DEBAT, P. GIBERT, A.-G. KISTER, H. LEGOUT, B. MORETEAU, R. VERGILINO, J. R. DAVID
2004 Functional Ecology

2- Genome size evolution and polyploidy in the Daphnia pulex complex (Cladocera: Daphniidae)
VERGILINO, ROLAND, CLAUDE BELZILE, FRANCE DUFRESNE
2009 Biological Journal of the Linnean Society

3- Diversity in the Reproductive Modes of European Daphnia pulicaria Deviates from the Geographical Parthenogenesis
France Dufresne, Silvia Marková, Roland Vergilino, Marc Ventura, Petr Kotlík
2011 PLoS ONE

4- No Evidence for Temporal Variation in a Cryptic Species Community of Freshwater Amphipods of the Hyalella azteca Species Complex
Dionne, Kaven, Roland Vergilino, France Dufresne, François Charles, Christian Nozais
2011 Diversity

5- Reticulate evolution of the Daphnia pulex complex as revealed by nuclear markers
VERGILINO, ROLAND, SILVIA MARKOVA, MARC VENTURA, MARINA MANCA, FRANCE DUFRESNE
2011 Molecular Ecology

6- Genome size differences inHyalellacryptic species
Vergilino, Roland, Kaven Dionne, Christian Nozais, France Dufresne, Claude Belzile, P. Donini
2012 Genome

7- Evolution of a transposon in Daphnia hybrid genomes
Vergilino, Roland, Tyler A Elliott, Philippe Desjardins-Proulx, Teresa J Crease, France Dufresne
2013 Mobile DNA

8- Recent progress and challenges in population genetics of polyploid organisms: an overview of current state-of-the-art molecular and statistical tools
Dufresne, France, Marc Stift, Roland Vergilino, Barbara K. Mable
2014 Molecular Ecology

9- Impact of ploidy level on the distribution of Pokey element insertions in the Daphnia pulex complex
Vergilino, Roland, Shannon HC Eagle, Teresa J Crease, France Dufresne
2014 Mobile DNA