1. Winter Range

    14:47

    from Erik Rochner / Added

    216 Plays / / 3 Comments

    A film about the livestock disease brucellosis and the conflict that it creates between people and wildlife in the Greater Yellowstone Ecosystem

    + More details
    • Interview with John Anderson

      06:15

      from Erik Rochner / Added

      63 Plays / / 0 Comments

      Alder MT livestock producer talks about brucellosis-infected elk

      + More details
      • Brucellosis in Montana

        05:59

        from Erik Rochner / Added

        67 Plays / / 0 Comments

        Interview with Dr. Martin Zaluski on brucellosis in Montana

        + More details
        • Interview with Dr. Mark Drew on Brucella abortus in Idaho

          06:11

          from Erik Rochner / Added

          97 Plays / / 0 Comments

          + More details
          • Project 1: Proximity Collars

            06:56

            from Erik Rochner / Added

            97 Plays / / 0 Comments

            Project 1. Estimating contact-group size relationships with proximity collars • Hyp. 1.1. Elk-elk and elk-fetus contact rates increase with group size and the provisioning of food (via effects of density at a very local scale). • Hyp. 1.2. The effects of age, disease status, weather and snowpack on contact rates are minor relative to group size effects. Project 1. Fine-scale estimation of contact rates: How individuals contact one another plays a key role in disease dynamics—by influencing seasonal patterns of infection. We are using a recently developed proximity collar technology to continuously monitor elk-elk and elk-fetus contacts as a function of group size, time of year, supplemental feeding, ambient conditions, and an individual’s disease status. These proximity collars, made by Sirtrack Ltd., log the time, date, and duration that individuals are within a user-defined detection range of other collared individuals. We initiated this study in Jan. 2009 with 60 female elk captured on two feedgrounds and the collars were recovered in Jan. 2010. We also placed proximity loggers under elk fetuses and at random sites without fetuses to estimate elk-fetus contact, the degree of attraction to fetuses, and the effects of altered feeding regimes on these contact rates.

            + More details
            • Project 4: Genetics

              04:56

              from Erik Rochner / Added

              90 Plays / / 0 Comments

              Project 4. Genetic analyses of host connectivity and cross-species transmission • Hyp. 4.1. Host species will be a better predictor of Brucella abortus genetic similarity than geographic location reflecting a limited amount of cross-species transmission. • Hyp. 4.2. Few seropositive elk from unfed populations will be immigrants from the supplemental feedgrounds reflecting high levels of on-site transmission. Project 4. Genetic estimates of transmission & origins of infected elk Estimating the relationships between host density, transmission, and prevalence implicitly assumes that the disease dynamics are driven by local/internal processes rather than immigration from other populations or spill-over from other hosts. We will use genetic analyses of B. abortus isolates and elk to assess the amount of elk movement among populations and B. abortus transmission among species and populations.

              + More details

              What are Tags?

              Tags

              Tags are keywords that describe videos. For example, a video of your Hawaiian vacation might be tagged with "Hawaii," "beach," "surfing," and "sunburn."