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No evidence for enzootic plague within black-tailed prairie dog(cynomys ludovicianus)populations

Integrative Zoology 2021年第6期16卷 834-851页

作者： Rebecca E.COLMAN R.Jory BRINKERHOFF Joseph D.BUSCH Chris RAY Adina DOYLE Jason W.SAHL Paul KEIM Sharon K.COLLINGE David M.WAGNER Pathogen and Microbiome Institute Northern Arizona UniversityFlagstaffArizonaUSA Environmental Studies Program University of Colorado at BoulderBoulderColoradoUSA

Yersinia pestis,causative agent of plague,occurs throughout the western United States in rodent populations and periodically causes epizootics in susceptible species,including black-tailed prairie dogs(cynomys ludovicianus).How *** persists long-term in the environment between these epizootics is poorly understood but multiple mechanisms have been proposed,including,among others,a separate enzootic transmission cycle that maintains *** without involvement of epizootic hosts and persistence of *** within epizootic host populations without causing high mortality within those *** live-trapped and collected fleas from black-tailed prairie dogs and other mammal species from sites with and without black-tailed prairie dogs in 2004 and 2005 and tested all fleas for presence of *** was not detected in 2126 fleas collected in 2004 but was detected in 294 fleas collected from multiple sites in 2005,before and during a widespread epizootic that drastically reduced black-tailed prairie dog populations in the affected *** and spatial patterns of *** occurrence in fleas and genotyping of *** present in some infected fleas suggest *** was introduced multiple times from sources outside the study area and once introduced,was dispersed between several *** conclude *** likely was not present in these black-tailed prairie dog colonies prior to epizootic activity in these *** we did not identify likely enzootic hosts,we found evidence that deer mice(Peromyscus maniculatus)may serve as bridging hosts for *** between unknown enzootic hosts and black-tailed prairie dogs.

关键词： black-tailed prairie dog cynomys ludovicianus plague prairie dogs Yersinia pestis

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