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1篇 您的检索式：作者名="Jason W.SAHL"

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		题名	作者	年代	出处	被引量
	1	No evidence for enzootic plague within black-tailed prairie dog(Cynomys ludovicianus)populations显示文摘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 Y.pestis 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 Y.pestis without involvement of epizootic hosts and persistence of Y.pestis within epizootic host populations without causing high mortality within those populations.We 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 Y.pestis.Y.pestis 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 colonies.Temporal and spatial patterns of Y.pestis occurrence in fleas and genotyping of Y.pestis present in some infected fleas suggest Y.pestis was introduced multiple times from sources outside the study area and once introduced,was dispersed between several sites.We conclude Y.pestis likely was not present in these black-tailed prairie dog colonies prior to epizootic activity in these colonies.Although we did not identify likely enzootic hosts,we found evidence that deer mice(Peromyscus maniculatus)may serve as bridging hosts for Y.pestis between unknown enzootic hosts and black-tailed prairie dogs.	Rebecca E.COLMAN R.Jory BRINKERHOFF Joseph D.BUSCH Chris RAY Adina DOYLE Jason W.SAHL Paul KEIM Sharon K.COLLINGE David M.WAGNER	2021	Integrative Zoology2021，16，6：	0

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