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Migratory movements of waterfowl in Central Asia and avian influenza emergence: sporadic transmission of H5N1 from east to west
Author(s) -
IVERSON SAMUEL A.,
GAVRILOV ANDREI,
KATZNER TODD E.,
TAKEKAWA JOHN Y.,
MILLER TRICIA A.,
HAGEMEIJER WARD,
MUNDKUR TAEJ,
SIVANANINTHAPERUMAL BALACHANDRAN,
DeMATTOS CARLOS C.,
AHMED LU’AY S.,
NEWMAN SCOTT H.
Publication year - 2011
Publication title -
ibis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.933
H-Index - 80
eISSN - 1474-919X
pISSN - 0019-1019
DOI - 10.1111/j.1474-919x.2010.01095.x
Subject(s) - waterfowl , geography , influenza a virus subtype h5n1 , flyway , outbreak , anas , transmission (telecommunications) , habitat , east asia , ecology , biology , china , archaeology , virus , virology , electrical engineering , engineering
Waterfowl in the genera Anas and Tadorna are suspected as vectors in the long‐distance transmission of highly pathogenic avian influenza H5N1. The former Soviet Republics of Central Asia are situated at an important migratory crossroads for these and other species of birds that bridges regions where the disease is prevalent. However, waterfowl movements through Central Asia are poorly quantified. In this study, historical data derived from over 80 years of bird ringing are combined with recent satellite tracking data to delineate migration routes, movement chronology and habitat use patterns of waterfowl in relation to H5N1 outbreak locations. Results confirm migratory linkage between breeding and moulting areas in northern Kazakhstan and southern Siberia, with non‐breeding areas in the Caspian, Black and eastern Mediterranean Sea basins, as well as with South Asia. However, unlike the situation in neighbouring regions, most notably western China, H5N1 outbreaks have not been recurrent in Central Asia after they were first reported during summer 2005 and spring 2006. These findings have implications in relation to potential sampling biases, species‐specific variation in migratory behaviour and continuing regional H5N1 transmission risks.