HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Lehr, M. A. Articles by Shadduck, D. J. Search for Related Content PubMed PubMed Citation Articles by Lehr, M. A. Articles by Shadduck, D. J.

¹ Wildlife Department, Humboldt State University, Arcata, California 95521, USA
² U.S. Geological Survey, Biological Resources Division, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711, USA
⁴ Corresponding author (email: mlehr{at}stanford.edu)

ABSTRACT:   We studied patterns in avian cholera mortality, the presence of Pasteurella multocida in the water or sediment, and water chemistry characteristics in 10 wetlands at the Sacramento National Wildlife Refuge Complex (California, USA), an area of recurrent avian cholera epizootics, during the winters of 1997 and 1998. Avian cholera outbreaks (50 dead birds) occurred on two wetlands during the winter of 1997, but no P. multocida were recovered from 390 water and 390 sediment samples from any of the 10 wetlands. No mortality events were observed on study wetlands during the winter of 1998; however, P. multocida was recovered from water and sediment samples in six of the 10 study wetlands. The pH levels were higher for wetlands experiencing outbreaks during the winter of 1997 than for nonoutbreak wetlands, and aluminum concentrations were higher in wetlands from which P. multocida were recovered during the winter of 1998. Water chemistry parameters (calcium, magnesium, sodium, and dissolved protein) previously linked with P. multocida and avian cholera mortality were not associated with the occurrence of avian cholera outbreaks or the presence of P. multocida in our study wetlands. Overall, we found no evidence to support the hypothesis that wetland characteristics facilitate the presence of P. multocida and, thereby, allow some wetlands to serve as long-term sources (reservoirs) for P. multocida.
  Key words:  Avian cholera, Pasteurella multocida, water characteristics, wetlands.

³ Current address: U.S. Geological Survey, Wisconsin Cooperative Wildlife Research Unit, 204 Russell Lab, University of Wisconsin, Madison, Wisconsin 53706, USA

This article has been cited by other articles:

				D. S. Blehert, K. L. Jefferson, D. M. Heisey, M. D. Samuel, B. M. Berlowski, and D. J. Shadduck USING AMPLIFIED FRAGMENT LENGTH POLYMORPHISM ANALYSIS TO DIFFERENTIATE ISOLATES OF PASTEURELLA MULTOCIDA SEROTYPE 1 J. Wildl. Dis., April 1, 2008; 44(2): 209 - 225. [Abstract] [Full Text] [PDF]

				J. A. Blanchong, M. D. Samuel, D. R. Goldberg, D. J. Shadduck, and M. A. Lehr Persistence of pasteurella multocida in wetlands following avian cholera outbreaks. J. Wildl. Dis., January 1, 2006; 42(1): 33 - 39. [Abstract] [Full Text] [PDF]