granulocytic ehrlichiosis and tick infestation in mountain lions in california.forty-seven mountain lions (puma concolor) collected year-round in 1996 to 1998 from the sierra nevada foothills, the northern coast ranges, and in monterey county (california, usa) were examined for infestation with ixodes pacificus and dermacentor variabilis ticks. ticks were found predominantly in winter and spring. the seroprevalence of granulocytic ehrlichiae (ge) antibodies (ehrlichia equi or the agent of human granulocytic ehrlichiosis) was 17% and the pcr-prevalence of dna characteristic ...199910574529
zoonotic vector-borne bacterial pathogens in california mountain lions (puma concolor), 1987-2010.sera collected from 442 mountain lions in 48 california counties between the years of 1987 and 2010 were tested using immunofluorescence assays and agglutination tests for the presence of antibodies reactive to yersinia pestis, francisella tularensis, bartonella henselae, borrelia burgdorferi, and anaplasma phagocytophilum antigens. data were analyzed for spatial and temporal trends in seropositivity. seroprevalences for b. burgdorferi (19.9%) and b. henselae (37.1%) were relatively high, with t ...201222925024
wildland fire management and air quality in the southern sierra nevada: using the lion fire as a case study with a multi-year perspective on pm(2.5) impacts and fire of fire is an important and controversial policy issue. active fire suppression has led to a backlog of fuels, limited the ecological benefits of fire, and reduced short-term smoke impacts likely delaying these emissions to future generations over a larger spatial extent. smoke impacts can be expected to increase as fire size and intensity increase and the fuel backlog is consumed; whether through reintroduction of fire under desirable conditions or through stand replacing fire. land ...201424973615
identification of source-sink dynamics in mountain lions of the great basin.natural and anthropogenic boundaries have been shown to affect population dynamics and population structure for many species with movement patterns at the landscape level. understanding population boundaries and movement rates in the field for species that are cryptic and occur at low densities is often extremely difficult and logistically prohibitive; however genetic techniques may offer insights that have previously been unattainable. we analysed thirteen microsatellite loci for 739 mountain l ...201222934825
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