• 98 Efficacy of commercial equine semen freezing extenders for cryopreservation of southern white rhinoceros (Ceratotherium simum simum) sperm

      Young, Carly; Ravida, Nicole; Pennington, Parker M.; Durrant, Barbara S. (2019)
      Once nearly extinct in the wild, the southern white rhinoceros is currently listed as near threatened by IUCN. This status is likely to change as poaching continues to escalate....
    • Challenges in the development of semen cryopreservation protocols for snakes

      Young, Carly; Ravida, Nicole; Durrant, Barbara S. (2019)
    • Estimating jaguar densities with camera traps: Problems with current designs and recommendations for future studies

      Tobler, Mathias W.; Powell, G.V.N. (2013)
      Camera traps have become the main method for estimating jaguar (Panthera onca) densities. Over 74 studies have been carried out throughout the species range following standard design recommendations. We reviewed the study designs used by these studies and the results obtained. Using simulated data we evaluated the performance of different statistical methods for estimating density from camera trap data including the closed-population capture–recapture models Mo and Mh with a buffer of ½ and the full mean maximum distance moved (MMDM) and spatially explicit capture–recapture (SECR) models under different study designs and scenarios….
    • Rigorous wildlife disease surveillance

      Watsa, Mrinalini; Wildlife Disease Surveillance Focus Group; Erkenswick, G.; Prost, S.; Davis, Elizabeth Oneita; Moore, Caroline; Kubiski, Steven V.; Witte, Carmel L.; Ogden, R.; Meredith, A.; et al. (2020)
      Evidence suggests that zoonotic (animal origin) coronaviruses have caused three recent emerging infectious disease (EID) outbreaks: severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and the current coronavirus disease 2019 (COVID-19) pandemic. In the search for an intermediate host for SARS coronavirus 2 (SARS-CoV-2, which causes COVID-19), studies have identified SARS-CoV-2–like strains in bats (1) and pangolins (2), but these do not contain the same polybasic cleavage site that is present in SARS-CoV-2 (3). It is unknown what the intermediate host for this spillover event was because to date there are no international or national conventions on pathogen screening associated with animals, animal products, or their movements, and capacity for EID diagnostics is limited along much of the human-wildlife interface....
    • The seasonal energetic landscape of an apex marine carnivore, the polar bear

      Pagano, Anthony M.; Atwood, Todd C.; Durner, George M.; Williams, Terrie M. (2020)
      …In recent decades, the Southern Beaufort Sea subpopulation of polar bears (Ursus maritimus) has developed a divergent movement strategy in response to diminishing sea ice where the majority of the subpopulation (73–85%) stays on the sea ice in summer and the remaining bears move to land…. We used GPS satellite collars with tri-axial accelerometers and conductivity sensors to measure the location, behavior, and energy expenditure of five adult female polar bears in the southern Beaufort Sea across seasons of sea ice breakup and minimum extent…