Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos)

Nichola J. Hill, John Y. Takekawa, Joshua T. Ackerman, Keith A. Hobson, Garth Herring, Carol J. Cardona, Jonathan A. Runstadler, Walter M Boyce

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Studies of pathogen transmission typically overlook that wildlife hosts can include both migrant and resident populations when attempting to model circulation. Through the application of stable isotopes in flight feathers, we estimated the migration strategy of mallards (Anas platyrhynchos) occurring on California wintering grounds. Our study demonstrates that mallards- a principal host of avian influenza virus (AIV) in nature, contribute differently to virus gene flow depending on migration strategy. No difference in AIV prevalence was detected between resident (9.6%), intermediate-distance (9.6%) and long-distance migrants (7.4%). Viral diversity among the three groups was also comparable, possibly owing to viral pool mixing when birds converge at wetlands during winter. However, migrants and residents contributed differently to the virus gene pool at wintering wetlands. Migrants introduced virus from northern breeding grounds (Alaska and the NW Pacific Rim) into the wintering population, facilitating gene flow at continental scales, but circulation of imported virus appeared to be limited. In contrast, resident mallards acted as AIV reservoirs facilitating year-round circulation of limited subtypes (i.e. H5N2) at lower latitudes. This study supports a model of virus exchange in temperate regions driven by the convergence of wild birds with separate geographic origins and exposure histories. see also the Perspective by Dugan.

Original languageEnglish (US)
Pages (from-to)5986-5999
Number of pages14
JournalMolecular Ecology
Volume21
Issue number24
DOIs
StatePublished - Dec 2012

Fingerprint

avian influenza
Influenza in Birds
Anas platyrhynchos
virus
Viruses
viruses
Orthomyxoviridae
Influenza A virus
Gene Flow
Wetlands
Birds
gene flow
wetlands
Pacific Rim
Gene Pool
Feathers
Infectious Disease Transmission
wild birds
feathers
Isotopes

Keywords

  • animal migration
  • Pacific Flyway
  • pathogen transmission
  • stable isotopes
  • waterfowl

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Genetics

Cite this

Hill, N. J., Takekawa, J. Y., Ackerman, J. T., Hobson, K. A., Herring, G., Cardona, C. J., ... Boyce, W. M. (2012). Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos). Molecular Ecology, 21(24), 5986-5999. https://doi.org/10.1111/j.1365-294X.2012.05735.x

Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos). / Hill, Nichola J.; Takekawa, John Y.; Ackerman, Joshua T.; Hobson, Keith A.; Herring, Garth; Cardona, Carol J.; Runstadler, Jonathan A.; Boyce, Walter M.

In: Molecular Ecology, Vol. 21, No. 24, 12.2012, p. 5986-5999.

Research output: Contribution to journalArticle

Hill, NJ, Takekawa, JY, Ackerman, JT, Hobson, KA, Herring, G, Cardona, CJ, Runstadler, JA & Boyce, WM 2012, 'Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos)', Molecular Ecology, vol. 21, no. 24, pp. 5986-5999. https://doi.org/10.1111/j.1365-294X.2012.05735.x
Hill NJ, Takekawa JY, Ackerman JT, Hobson KA, Herring G, Cardona CJ et al. Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos). Molecular Ecology. 2012 Dec;21(24):5986-5999. https://doi.org/10.1111/j.1365-294X.2012.05735.x
Hill, Nichola J. ; Takekawa, John Y. ; Ackerman, Joshua T. ; Hobson, Keith A. ; Herring, Garth ; Cardona, Carol J. ; Runstadler, Jonathan A. ; Boyce, Walter M. / Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos). In: Molecular Ecology. 2012 ; Vol. 21, No. 24. pp. 5986-5999.
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