Re: Prairie Dogs in Wyoming?
While hunting pressure surely does not help PD populations, yersenia pestis (plague) was inadvertently introduced into the western US in 1899. Prarie dogs have no natural immunity to Y. pestis, and develop no immunity as a result of exposure. As a result, prarie dog populations undergo boom and bust cycles where populations expand but then are wiped out when a plague epidemic occurs. Contrary to popular belief, prarie dogs are not the wild disease pool for plague as the mortality rate is much too high for them to sustain it (near 100%, where survivors are attributed to non exposure). Fleas are the known vectors for Y. pestis, however, the mammalian species responsible for the persistence of Y. pestis in the wild is not known.
Incidentally, New Mexico is known within the infectious disease research community as "The land of the FLEA and the home of the PLAGUE." There are researchers there that spend their entire careers monitoring prarie dog towns and collecting fleas for analysis.