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Fecal Shedding and Antimicrobial Susceptibility of Selected Bacterial Pathogens and a Survey of Intestinal Parasites in Free-Living Waterfowl

D. M. Fallacara, C. M. Monahan, T. Y. Morishita and R. F. Wack
Avian Diseases
Vol. 45, No. 1 (Jan. - Mar., 2001), pp. 128-135
DOI: 10.2307/1593019
Stable URL: http://www.jstor.org/stable/1593019
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Fecal Shedding and Antimicrobial Susceptibility of Selected Bacterial Pathogens and a Survey of Intestinal Parasites in Free-Living Waterfowl
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Abstract

Free-living waterfowl residing in metropolitan parks in central Ohio were surveyed for the fecal shedding and antimicrobial susceptibility patterns of Campylobacter jejuni, Escherichia coli, Salmonella spp., and Pasteurella multocida. In addition, a survey for intestinal parasites was also conducted in these same waterfowl to determine parasite burdens in free-living waterfowl. Prevalences of 67%, 50%, and 0.2% of E. coli, C. jejuni, and Salmonella spp., respectively, were observed for all waterfowl species. Pasteurella multocida was not isolated from the sampled population. Salmonella java was isolated from one mallard duck. Statistically, there was a significantly higher E. coli isolation rate for mallard ducks than for Canada geese, but no difference was observed for C. jejuni isolation rates between waterfowl species. Antimicrobial susceptibility testing was conducted via the disk diffusion method and multidrug resistance was exhibited for penicillin G, lincomycin, vancomycin, erythromycin, and bacitracin. In addition, the prevalence of endoparasites in these sampled waterfowl ranged from 5% to 66%. Protozoan oocysts were most prevalent followed by nematode ova. No trematode or cestode ovum was recovered from this sampled population. /// Se realizó una encuesta en aves acuáticas de libre vuelo que habitan en parques metropolitanos en el centro de Ohio para la eliminación fecal y patrones de susceptibilidad antimicrobiana de Campylobacter jejuni, Escherichia coli, Salmonella spp., y Pasteurella multocida. Además, también se realizó una encuesta para parásitos intestinales en estas mismas aves, para determinar la carga parasitaria en aves de libre vuelo. Se observó una prevalencia de 67%, 50% y 0.2% de Escherichia coli, Campylobacter jejuni y Salmonella spp., respectivamente, para todas las especies de aves acuáticas de libre vuelo. No se aisló Pasteurella multocida de la población muestreada. Se aisló Salmonella java de una pato real (Anas platyrhynchus). Estadisticamente se realizaron porcentajes significantementes mayores de aislamientos de E. coli en patos reales que en ganzos de Canadá pero no se observó diferencia en los porcentajes de aislamientos de C. jejuni entre las especies de aves acuáticas. El examen de la susceptibilidad antimicrobiana se realizó mediante el método de difusión y se observó un patrón de resistencia múltiple a las drogas para penicilina G, lincomicina, vancomicina, eritromicina y bacitracina. Además, la prevalencia de endoparásitos en estas aves acuáticas muestreadas varió de 5% a 65%. Los oocistos de protozoarios fueron los más prevalentes seguidos por huevos de nemátodos. No se aislaron huevos de tramátodos o cestodos de esta población muestreada.

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