We examined American redstarts (Setophaga ruticilla) for protozoan blood parasites on their wintering grounds to determine whether transmission of these parasites occurs prior to spring migration. A total of 73 blood smears from 37 birds were examined for presence and intensity of infection. Thirty-six birds were sampled in the fall, soon after arriving from northern breeding grounds, and the spring prior to departure. Two (5%) of the samples collected in the fall were positive for Haemoproteus fringillae and one (3%) had detectable infections of Trypanosoma avium. Individuals infected with H. fringillae were hatching year redstarts sampled in September and October. Intensity of infection was 78 and <1 infected erythrocytes per 10,000 erythrocytes, respectively. None of the birds had detectable infections when resampled prior to spring migration the following March.
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Research Article|
January 01 2004
Prevalence of Hematozoa in Overwintering American Redstarts (Setophaga ruticilla): No Evidence for Local Transmission
Mary C. Garvin;
Mary C. Garvin
3
1 Department of Biology, Oberlin College, Oberlin, Ohio 44074, USA
3 Corresponding author: (email: mary.garvin@oberlin.edu)
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Peter P. Marra;
Peter P. Marra
2 Smithsonian Environmental Research Center, 647 Contees Wharf Rd., Edgewater, Maryland 21037, USA
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Sarah K. Crain
Sarah K. Crain
1 Department of Biology, Oberlin College, Oberlin, Ohio 44074, USA
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J Wildl Dis (2004) 40 (1): 115–118.
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Received:
February 03 2003
Citation
Mary C. Garvin, Peter P. Marra, Sarah K. Crain; Prevalence of Hematozoa in Overwintering American Redstarts (Setophaga ruticilla): No Evidence for Local Transmission. J Wildl Dis 1 January 2004; 40 (1): 115–118. doi: https://doi.org/10.7589/0090-3558-40.1.115
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