期刊
ECOLOGY LETTERS
卷 15, 期 1, 页码 24-33出版社
WILEY
DOI: 10.1111/j.1461-0248.2011.01703.x
关键词
Avian influenza; ecological barriers; evolution; flyways; gene flow; phylogeography; spatial distance
类别
资金
- National Institutes of Health [R01 GM080533]
- US Department of the Interior
- US Fish and Wildlife Service
- US Geological Survey, Biological Resources Discipline
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services [HHSN272200900007C]
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM080533] Funding Source: NIH RePORTER
Despite the importance of migratory birds in the ecology and evolution of avian influenza virus (AIV), there is a lack of information on the patterns of AIV spread at the intra-continental scale. We applied a variety of statistical phylogeographic techniques to a plethora of viral genome sequence data to determine the strength, pattern and determinants of gene flow in AIV sampled from wild birds in North America. These analyses revealed a clear isolation-by-distance of AIV among sampling localities. In addition, we show that phylogeographic models incorporating information on the avian flyway of sampling proved a better fit to the observed sequence data than those specifying homogeneous or random rates of gene flow among localities. In sum, these data strongly suggest that the intra-continental spread of AIV by migratory birds is subject to major ecological barriers, including spatial distance and avian flyway.
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