Combining genetic markers and stable isotopes to reveal population connectivity and migration patterns in a neotropical migrant, Wilson's warbler (Wilsonia pusilla)

Molecular Ecology
S M CleggThomas B Smith

Abstract

We used results from the analysis of microsatellite DNA variation and hydrogen stable-isotope ratios to characterize the population structure of a neotropical migrant passerine, the Wilson's warbler (Wilsonia pusilla). The resulting information was then used to infer migration patterns and population connectivity between breeding grounds in North America and overwintering areas in Mexico and Central America. The microsatellite data revealed genetic structure across the North American continent; populations in the west were found to significantly differ from the east. Minimal genetic structure was observed among western sites. The lack of isolation by distance and low variance in FST values suggests that gene flow could play an ongoing role in limiting genetic differentiation among sites in the western part of the distribution. However, additional information including estimates of effective population size and the proximity of the population to equilibrium is required before the role of gene flow can be assessed fully. Analysis of isotope data showed a negative relationship between latitude and hydrogen isotope ratios in breeding ground individuals. There was a positive relationship between wintering ground latitude and hydroge...Continue Reading

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Citations

May 17, 2006·Trends in Ecology & Evolution·Dustin R Rubenstein, Keith A Hobson
May 13, 2008·The Journal of Heredity·Gabriel J ColbeckMichael S Webster
Apr 19, 2016·Evolutionary Applications·Susan M HaigThomas D Mullins
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Mar 27, 2019·Molecular Ecology·Matthew G DeSaixRodney J Dyer
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May 20, 2014·Ecological Applications : a Publication of the Ecological Society of America·Clark S RushingPeter P Marra
Jun 29, 2021·Evolutionary Applications·Brenda LarisonKristen Ruegg

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