Evidence for limited exchange of avian influenza viruses between seaducks and dabbling ducks at Alaska Peninsula coastal lagoons

Evidence for limited exchange of avian influenza viruses between seaducks and dabbling ducks at... Avian influenza virus (AIV) prevalence and sequence data were analyzed for Steller’s eiders ( Polysticta stelleri ) to assess the role of this species in transporting virus genes between continents and maintaining a regional viral reservoir with sympatric northern pintails ( Anas acuta ). AIV prevalence was 0.2% at Izembek Lagoon and 3.9% at Nelson Lagoon for Steller’s eiders and 11.2% for northern pintails at Izembek Lagoon. Phylogenetic analysis of 13 AIVs from Steller’s eiders revealed that 4.9% of genes were of Eurasian origin. Seven subtypes were detected, including two also observed in northern pintails. No AIV strains were highly similar (> 99%) at all gene segments between species; however, highly similar individual genes were detected. The proportion of highly similar genes was greater within rather than between species. Steller’s eiders likely transport AIV genes between continents through long-distance migratory movements. Differences in AIV prevalence, subtype distribution, and the proportion of highly similar genes suggest limited AIV exchange between Steller’s eiders and northern pintails at Alaska Peninsula coastal lagoons during autumn. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Evidence for limited exchange of avian influenza viruses between seaducks and dabbling ducks at Alaska Peninsula coastal lagoons

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Publisher
Springer Vienna
Copyright
Copyright © 2011 by Springer-Verlag
Subject
Biomedicine; Virology; Infectious Diseases; Medical Microbiology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-011-1059-z
Publisher site
See Article on Publisher Site

Abstract

Avian influenza virus (AIV) prevalence and sequence data were analyzed for Steller’s eiders ( Polysticta stelleri ) to assess the role of this species in transporting virus genes between continents and maintaining a regional viral reservoir with sympatric northern pintails ( Anas acuta ). AIV prevalence was 0.2% at Izembek Lagoon and 3.9% at Nelson Lagoon for Steller’s eiders and 11.2% for northern pintails at Izembek Lagoon. Phylogenetic analysis of 13 AIVs from Steller’s eiders revealed that 4.9% of genes were of Eurasian origin. Seven subtypes were detected, including two also observed in northern pintails. No AIV strains were highly similar (> 99%) at all gene segments between species; however, highly similar individual genes were detected. The proportion of highly similar genes was greater within rather than between species. Steller’s eiders likely transport AIV genes between continents through long-distance migratory movements. Differences in AIV prevalence, subtype distribution, and the proportion of highly similar genes suggest limited AIV exchange between Steller’s eiders and northern pintails at Alaska Peninsula coastal lagoons during autumn.

Journal

Archives of VirologySpringer Journals

Published: Oct 1, 2011

References

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