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Survey of Pathogens and Blood Parasites in Free-Living Passerines

Teresa Y. Morishita, Aye, Elizabeth C. Ley and Brian S. Harr
Avian Diseases
Vol. 43, No. 3 (Jul. - Sep., 1999), pp. 549-552
DOI: 10.2307/1592655
Stable URL: http://www.jstor.org/stable/1592655
Page Count: 4
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Survey of Pathogens and Blood Parasites in Free-Living Passerines
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Abstract

To determine the disease prevalence of free-living passerines, 1709 passerines were sampled from 38 different field sites in Ohio. Choanal and cloacal swabs were collected from each bird and cultured for the presence of Pasteurella multocida, Salmonella spp., and Escherichia coli by standard microbiologic techniques. In addition, the serum from each bird was analyzed for the presence of antibodies to Mycoplasma gallisepticum, Mycoplasma synoviae, Newcastle disease virus, and avian influenza virus. A blood smear was also made to examine for the presence of blood parasites. Results indicated that the isolation of E. coli varied with bird species, with the European starling having a higher (21.4%) isolation of E. coli. Salmonella spp. were also isolated from these free-living passerines. Pasteurella multocida was not isolated from any of the sampled passerines. These birds did not have antibodies to M. gallisepticum, M. synoviae, Newcastle disease virus, or avian influenza virus. Blood parasites were not detected in any of the birds sampled. /// Con el objeto de determinar la prevalencia de enfermedades en paserines silvestres, se muestrearon 1709 paserines en 38 sitios diferentes en el estado de Ohio. Se tomaron hisopos de la cloaca y de la coana (abertura posterior de las fosas nasales) de cada ave y se cultivaron para la presencia de Pasteurella multocida, Salmonella spp. y Escherichia coli utilizando técnicas estándares de microbiologia. Además, se analizó el suero de cada ave para la presencia de anticuerpos contra Mycoplasma gallisepticum, Mycoplasma synoviae, virus de la enfermedad de Newcastle y el virus de influenza aviar. También se examinaron frotis sanguíneos para la presencia de parásitos. Los resultados indican que los aislamientos de E. coli variaron con las diferentes especies aviares siendo más altos (21.4%) los aislamientos de E. coli realizados en el estornino Europeo. También se aisló Salmonella spp. de estos paserines silvestres. No se aisló P. multocida de ninguna de las especies de paserines examinadas. No se detectaron anticuerpos contra M. gallisepticum, M. synoviae, el virus de la enfermedad de Newcastle o el virus de influenza aviar en las aves examinadas. Tampoco se observaron parásitos sanguineos en todas las aves muestreadas.

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