| relapsing fever group borrelia in southern california rodents. | wild rodent reservoir host species were surveyed prospectively for infection with borrelia hermsii, the causative agent of tick-borne relapsing fever in the western united states. trapping occurred during the summer of 2009-2012 at field sites surrounding big bear lake, ca, a region where human infection has been reported for many years. using quantitative polymerase chain reaction (qpcr), we tested 207 rodents from 11 species and found chipmunks (tamias spp.) and a woodrat (neotoma macrotis) in ... | 2014 | 25276933 |
| use of a chitin synthesis inhibitor to control fleas on wild rodents important in the maintenance of plague, yersinia pestis, in california. | a study was designed to test the insect development inhibitors fluazuron and lufenuron for the control of fleas on sylvatic rodents as an adjunct to the control of plague. historical data of flea burden from 15 prior years of study at chuchupate campground, ventura county, ca, were compared to six years of treatment period data to determine if fluazuron and lufenuron were effective in controlling flea densities. the insect development inhibitors, delivered systemically via a feed cube, reduced f ... | 2008 | 19263847 |
| flea, rodent, and plague ecology at chuchupate campground, ventura county, california. | chuchupate campground in ventura county, california, was closed to the public for 18 years (1982 to 2000) because of uncontrolled vector fleas and persistent plague antibody titers in rodents. the primary purpose of this study was to clarify the plague ecology of chuchupate campground by identifying involved rodents and their vector fleas and by determining many of their ecological parameters: abundance, flea and host preferences and diversities, and flea seasonality. rodents and fleas were iden ... | 2002 | 12125863 |
| distribution and prevalence of vector-borne diseases in california chipmunks (tamias spp.). | california, with 13 chipmunk (tamias) species, has more than any other state or country, occupying habitats ranging from chaparral to the high peaks of the sierra nevada. chipmunks host zoonotic pathogens including yersinia pestis, anaplasma phagocytophilum, relapsing fever (rf) borrelia spp., borrelia burgdorferi, and spotted fever group (sfg) rickettsia species. chipmunk species are often not differentiated by public health workers, yet different species utilize different ecological niches and ... | 2017 | 29232397 |