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Articles 61 - 66 of 66
Full-Text Articles in Physical Sciences and Mathematics
Contraceptive Efficacy Of A Novel Intrauterine Device (Iud) In White-Tailed Deer, Karl D. Malcolm, Timothy R. Van Deelen, David Drake, Darrel J. Kesler, Kurt C. Vercauteren
Contraceptive Efficacy Of A Novel Intrauterine Device (Iud) In White-Tailed Deer, Karl D. Malcolm, Timothy R. Van Deelen, David Drake, Darrel J. Kesler, Kurt C. Vercauteren
USDA Wildlife Services: Staff Publications
Overabundant white-tailed deer (Odocoileus virginianus) pose risks to property, health, and safety of human beings. Public concerns about lethal management can impair efforts to address these issues, particularly in urban settings. Several techniques developed for reducing reproductive output of deer have limited utility because they require repeated dosing to achieve permanent effect and face uncertain regulatory approval for use beyond experimentation. From 10 August 2006 through 30 December 2007, we evaluated the contraceptive efficacy of copper-containing intrauterine devices (IUDs) implanted trans-cervically in white-tailed deer at the E.S. George Reserve in Pinckney, Michigan. Intrauterine devices were implanted before (n …
Seeking A Second Opinion: Uncertainty In Disease Ecology, Brett T. Mcclintock, James D. Nichols, Larissa L. Bailey, Darryl I. Mackenzie, William. L. Kendall, Alan B. Franklin
Seeking A Second Opinion: Uncertainty In Disease Ecology, Brett T. Mcclintock, James D. Nichols, Larissa L. Bailey, Darryl I. Mackenzie, William. L. Kendall, Alan B. Franklin
USDA Wildlife Services: Staff Publications
Analytical methods accounting for imperfect detection are often used to facilitate reliable inference in population and community ecology. We contend that similar approaches are needed in disease ecology because these complicated systems are inherently difficult to observe without error. For example, wildlife disease studies often designate individuals, populations, or spatial units to states (e.g., susceptible, infected, post-infected), but the uncertainty associated with these state assignments remains largely ignored or unaccounted for. We demonstrate how recent developments incorporating observation error through repeated sampling extend quite naturally to hierarchical spatial models of disease effects, prevalence, and dynamics in natural systems. A highly …
A Silent Enzootic Of An Orthopoxvirus In Ghana, West Africa: Evidence For Multi-Species Involvement In The Absence Of Widespread Human Disease, Mary G. Reynolds, Darin S. Carroll, Victoria A. Olson, Christine Hughes, Jack Galley, Anna Likos, Joel M. Montgomery, Richard Suu-Ire, Mubarak O. Kwasi, J. Jeffrey Root, Zach Braden, Jason Abel, Cody Clemmons, Russell Regnery, Kevin Karem, Inger K. Damon
A Silent Enzootic Of An Orthopoxvirus In Ghana, West Africa: Evidence For Multi-Species Involvement In The Absence Of Widespread Human Disease, Mary G. Reynolds, Darin S. Carroll, Victoria A. Olson, Christine Hughes, Jack Galley, Anna Likos, Joel M. Montgomery, Richard Suu-Ire, Mubarak O. Kwasi, J. Jeffrey Root, Zach Braden, Jason Abel, Cody Clemmons, Russell Regnery, Kevin Karem, Inger K. Damon
USDA Wildlife Services: Staff Publications
Human monkeypox has never been reported in Ghana, but rodents captured in forested areas of southern Ghana were the source of the monkeypox virus introduced into the United States in 2003. Subsequent to the outbreak in the United States, 204 animals were collected from two commercial trapping sites in Ghana. Animal tissues were examined for the presence of orthopoxvirus (OPXV) DNA using a real-time polymerase chain reaction, and sera were assayed for antibodies against OPXV. Animals from five genera (Cricetomys , Graphiurus , Funiscirus, and Heliosciurus ) had antibodies against OPXV, and three genera (Cricetomys , Graphiurus …
Review Of Issues Concerning The Use Of Reproductive Inhibitors, With Particular Emphasis On Resolving Human-Wildlife Conflicts In North America, Kathleen A. Fagerstone, Lowell A. Miller, Gary Killian, Christi A. Yoder
Review Of Issues Concerning The Use Of Reproductive Inhibitors, With Particular Emphasis On Resolving Human-Wildlife Conflicts In North America, Kathleen A. Fagerstone, Lowell A. Miller, Gary Killian, Christi A. Yoder
USDA Wildlife Services: Staff Publications
This manuscript provides an overview of past wildlife contraception efforts and discusses the current state of research. Two fertility control agents, an avian reproductive inhibitor containing the active ingredient nicarbazin and an immunocontraceptive vaccine, have received regulatory approval with the Environmental Protection Agency and are commercially available in the USA. OvoControl G Contraceptive Bait for Canada Geese and Ovo Control for pigeons are delivered as oral baits. An injectable immunocontraceptive vaccine (GonaCon Immunocontraceptive Vaccine) was registered with the Environmental Protection Agency for use in female white-tailed deer in September 2009. An injectable product (GonaCon Immunocontraceptive Vaccine) is registered for use …
Synchronous Monitoring Of Vulture Movements With Satellite Telemetry And Avian Radar, Robert C. Beason, J. S. Humphrey, N. E. Myers, Michael L. Avery
Synchronous Monitoring Of Vulture Movements With Satellite Telemetry And Avian Radar, Robert C. Beason, J. S. Humphrey, N. E. Myers, Michael L. Avery
USDA Wildlife Services: Staff Publications
Radar and satellite global positioning system-platform transmitter terminal (GPSPTT) transmitters provide complementary information on the movements and behaviors of individual birds. The GPS-PTT tag provides a snapshot of altitude and location of a specific individual of an identified species at predefined intervals. The history of the individual is known because each transmitter has a unique identification code. The radar cannot identify individuals or even species but it provides continuous position reports (altitude and location) of birds within its detection range. By integrating data from the two sources, the behavior and movements of identified individuals (not possible with radar) can be …
Capture Of Ungulates In Central Asia Using Drive Nets: Advantages And Pitfalls Illustrated By The Endangered Mongolian Saiga Saiga Tatarica Mongolica, Joel Berger, Kim M. Murray, Bayarbaatar Buuveibaatar, Mike R. Dunbar, Badamjav Lkhagvasuren
Capture Of Ungulates In Central Asia Using Drive Nets: Advantages And Pitfalls Illustrated By The Endangered Mongolian Saiga Saiga Tatarica Mongolica, Joel Berger, Kim M. Murray, Bayarbaatar Buuveibaatar, Mike R. Dunbar, Badamjav Lkhagvasuren
USDA Wildlife Services: Staff Publications
The study of mammals suffering intense poaching in remote areas poses an increasingly difficult conservation challenge, in part because the extreme flightiness of such species complicates safe capture. The benefits of handling (an opportunity to obtain biological information and attach radio collars) must be weighed against stress to the animals and potential capture-related mortality. In parts of Central Asia this problem is not trivial, as populations have been heavily harvested and opportunities for restraint are often limited. Mongolian saiga Saiga tatarica mongolica, being both Endangered and poached, typifies these issues. Here we describe capture protocols for adult females handled …