Spread of plague among black-tailed prairie dogs is associated with colony spatial characteristics

Journal of Wildlife Management
By: , and 



Sylvatic plague (Yersinia pestis) is an exotic pathogen that is highly virulent in black‐tailed prairie dogs (Cynomys ludovicianus) and causes widespread colony losses and individual mortality rates >95%. We investigated colony spatial characteristics that may influence inter‐colony transmission of plague at 3 prairie dog colony complexes in the Great Plains. The 4 spatial characteristics we considered include: colony size, Euclidean distance to nearest neighboring colony, colony proximity index, and distance to nearest drainage (dispersal) corridor. We used multi‐state mark–recapture models to determine the relationship between these colony characteristics and probability of plague transmission among prairie dog colonies. Annual mapping of colonies and mark–recapture analyses of disease dynamics in natural colonies led to 4 main results: 1) plague outbreaks exhibited high spatial and temporal variation, 2) the site of initiation of epizootic plague may have substantially influenced the subsequent inter‐colony spread of plague, 3) the long‐term effect of plague on individual colonies differed among sites because of how individuals and colonies were distributed, and 4) colony spatial characteristics were related to the probability of infection at all sites although the relative importance and direction of relationships varied among sites. Our findings suggest that conventional prairie dog conservation management strategies, including promoting large, highly connected colonies, may need to be altered in the presence of plague.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Spread of plague among black-tailed prairie dogs is associated with colony spatial characteristics
Series title Journal of Wildlife Management
DOI 10.1002/jwmg.40
Volume 75
Issue 2
Year Published 2011
Language English
Publisher Wildlife Society
Description 12 p.
First page 357
Last page 368
Country United States
State Colorado, Oklahoma, Texas, Kansas, New Mexico
Other Geospatial Cimarron National Grassland, Carizo Unit of the Comanche National Grassland, Kiowa‐Rita Blanca National Grasslands
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