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Articles 61 - 69 of 69
Full-Text Articles in Life Sciences
Mitigation Of Double-Crested Cormorant Impacts On Lake Ontario: From Planning And Practice To Product Delivery, James F. Farquhar, Irene M. Mazzocchi, Russell D. Mccullough, Richard B. Chipman, Travis L. Devault
Mitigation Of Double-Crested Cormorant Impacts On Lake Ontario: From Planning And Practice To Product Delivery, James F. Farquhar, Irene M. Mazzocchi, Russell D. Mccullough, Richard B. Chipman, Travis L. Devault
USDA Wildlife Services: Staff Publications
The New York State Department of Environmental Conservation initiated a Double-crested Cormorant (Phalacrocorax auritus) control program in the eastern basin of Lake Ontario to mitigate cormorant impacts in 1999. Key objectives included improving the quality of Smallmouth Bass (Micropterus dolomieu) and other fisheries, restoring the structure and function of the warmwater fish community and reducing cormorant impacts to nesting habitats of other colonial waterbird species. In eight years of intensive control, cormorant numbers declined, with a corresponding reduction in estimated fish consumption. Diversity and numbers of co-occurring waterbirds either increased or have not been shown to …
Antibodies To Avian Influenza Viruses In Canada Geese (Branta Canadensis): A Potential Surveillance Tool?, Whitney M. Kistler, David E. Stallknecht, Thomas J. Deliberto, Seth Swafford, Kerri Pedersen, Kyle Van Why, Paul C. Wolf, Jerry A. Hill, Darren L. Brunning, James C. Cumbee, Randall M. Mickley, Carl W. Betsill, Adam R. Randall, Roy D. Berghaus, Michael J. Yabsley
Antibodies To Avian Influenza Viruses In Canada Geese (Branta Canadensis): A Potential Surveillance Tool?, Whitney M. Kistler, David E. Stallknecht, Thomas J. Deliberto, Seth Swafford, Kerri Pedersen, Kyle Van Why, Paul C. Wolf, Jerry A. Hill, Darren L. Brunning, James C. Cumbee, Randall M. Mickley, Carl W. Betsill, Adam R. Randall, Roy D. Berghaus, Michael J. Yabsley
USDA Wildlife Services: Staff Publications
Traditionally, the epidemiology of avian influenza viruses (AIVs) in wild birds has been defined by detection of virus or viral RNA through virus isolation or reverse-transcription polymerase chain reaction. Our goals were to estimate AIV antibody prevalence in Canada geese (Branta canadensis) and measure effects of age and location on these estimates. We collected 3,205 samples from nine states during June and July 2008 and 2009: Georgia, Massachusetts, Minnesota, Mississippi, New Jersey, North Carolina, Pennsylvania, Washington, and West Virginia. Serum samples were tested for AIV antibodies with the use of a commercial blocking enzyme-linked immunosorbent assay. Overall, 483 …
Using Three-Dimensional Flight Patterns At Airfields To Identify Hotspots For Avianeaircraft Collisions, W. David Walter, Justin W. Fischer, John S. Humphrey, Trey S. Daughtery, Michael P. Milleson, Eric A. Tillman, Michael L. Avery
Using Three-Dimensional Flight Patterns At Airfields To Identify Hotspots For Avianeaircraft Collisions, W. David Walter, Justin W. Fischer, John S. Humphrey, Trey S. Daughtery, Michael P. Milleson, Eric A. Tillman, Michael L. Avery
USDA Wildlife Services: Staff Publications
In the United States, black vulture (Coragyps atratus) and turkey vulture (Cathartes aura) pose significant birdstrike risks to aircraft. Understanding flight behaviors of vultures in and around military and civilian airfields is necessary to alleviate these risks. Using satellite telemetry data collected from 11 black vultures and 7 turkey vultures equipped with Global Positioning System backpack harness technology, we collected data on location and altitude near the Marine Corps Air Station (MCAS) in Beaufort, South Carolina from September 2006 to September 2008. We used military aircraft flight landing patterns to visualize a new concept, a flight …
Economic Evaluation Of Vampire Bat (Desmodus Rotundus) Rabies Prevention In Mexico, Aaron M. Anderson, Stephanie A. Shwiff, Karen Gebhardt, A. J. Ramırez, Steven S. Shwiff, Dennis Kohler, Luis Lecuona
Economic Evaluation Of Vampire Bat (Desmodus Rotundus) Rabies Prevention In Mexico, Aaron M. Anderson, Stephanie A. Shwiff, Karen Gebhardt, A. J. Ramırez, Steven S. Shwiff, Dennis Kohler, Luis Lecuona
USDA Wildlife Services: Staff Publications
Vampire bat rabies causes significant impacts within its endemic range in Mexico. These impacts include livestock mortality, animal testing costs, post-exposure prophylaxis costs, and human mortality risk. Mitigation of the impacts can be achieved by vaccinating livestock and controlling vampire bat populations. A benefit- cost analysis was performed to examine the economic efficiency of these methods of mitigation, and Monte Carlo simulations were used to examine the impact that uncertainty has on the analysis. We found that livestock vaccination is efficient, with benefits being over six times higher than costs. However, bat control is inefficient because benefits are very unlikely …
Influence Of Forest Structure On The Abundance Of Snowshoe Hares In Western Wyoming, Nathan D. Berg, Eric M. Gese, John Squires, Lise M. Aubry
Influence Of Forest Structure On The Abundance Of Snowshoe Hares In Western Wyoming, Nathan D. Berg, Eric M. Gese, John Squires, Lise M. Aubry
USDA Wildlife Services: Staff Publications
Snowshoe hares (Lepus americanus) are a primary prey species for Canada lynx (Lynx canadensis) in western North America. Lynx management plans require knowledge of potential prey distribution and abundance in the western United States. Whether even-aged regenerating forests or multi-storied forests contain more snowshoe hares is currently unknown. During 2006–2008, we estimated snowshoe hare density in 3 classes of 30–70-year-old lodgepole pine (Pinus contorta) and 4 classes of late seral multi-storied forest with a spruce (Picea engelmannii)-fir (Abies lasiocarpa) component in the Bridger-Teton National Forest, Wyoming. We recorded physiographic variables …
The Role Of The National Wildlife Disease Program In Wildlife Disease Surveillance And Emergency Response, Kerri Pedersen, John A. Baroch, Dale L. Nolte, Tom Gidlewski, Thomas J. Deliberto
The Role Of The National Wildlife Disease Program In Wildlife Disease Surveillance And Emergency Response, Kerri Pedersen, John A. Baroch, Dale L. Nolte, Tom Gidlewski, Thomas J. Deliberto
USDA Wildlife Services: Staff Publications
The National Wildlife Disease Program (NWDP), overseen by the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services (WS), was established in 2003 to develop a nationally coordinated wildlife disease surveillance and emergency response system. Since its inception, the NWDP has developed collaborations with over 200 national and international partners. The national partners include state, tribal, federal, and private organizations. These partnerships have resulted in surveillance and management of over 100 pathogens, toxins, and disease syndromes affecting wildlife, domestic animals, and humans. Several of these pathogens, including avian influenza, plague, tularemia, bluetongue, and 10 pathogens carried by …
Quantification Of Heterosubtypic Immunity Between Avian Influenza Subtypes H3n8 And H4n6 In Multiple Avian Host Species, Kim M. Pepin, Kaci K. Vandalen, N. L. Mooers, J. W. Ellis, H. J. Sullivan, J. Jeffrey Root, Colleen T. Webb, A. B. Franklin, Susan A. Shriner
Quantification Of Heterosubtypic Immunity Between Avian Influenza Subtypes H3n8 And H4n6 In Multiple Avian Host Species, Kim M. Pepin, Kaci K. Vandalen, N. L. Mooers, J. W. Ellis, H. J. Sullivan, J. Jeffrey Root, Colleen T. Webb, A. B. Franklin, Susan A. Shriner
USDA Wildlife Services: Staff Publications
Low-pathogenicity avian influenza virus (LPAIV) can lead to epizootics that cause economic losses in poultry or the emergence of human-infectious strains. LPAIVs experience a complex immunity landscape as they are endemic in numerous host species, and many antigenically distinct strains cocirculate. Prevention and control of emergence of detrimental strains requires an understanding of infection/transmission characteristics of the various subtypes in different hosts, including interactions between subtypes. In order to develop analytical frameworks for examining control efficacy, quantification of heterosubtypic immunity interactions is fundamental. However, these data are scarce, especially for wild avian subtypes in natural hosts. Consequently, in this study, …
Rabies In North America: A Model Of The One Health Approach, Kurt C. Vercauteren, Christine Ellis, Richard Chipman, Thomas J. Deliberto, Stephanie A. Shwiff, Dennis Slate
Rabies In North America: A Model Of The One Health Approach, Kurt C. Vercauteren, Christine Ellis, Richard Chipman, Thomas J. Deliberto, Stephanie A. Shwiff, Dennis Slate
USDA Wildlife Services: Staff Publications
The One Health concept merges environmental, wildlife, domestic animal, and human health into a global, interconnected context. Though recently a popular catchphrase due to the emergence and reemergence of diseases such as foot-and-mouth disease (FMD), bluetongue, bovine spongiform encephalopathy (BSE), Q Fever, Rift Valley fever, Nipah virus, West Nile virus (WNV), severe acute respiratory syndrome (SARS), highly pathogenic H5N1 avian influenza, and plague, the One Health concept is not new. The One Health approach to managing infectious diseases aims to promote and implement meaningful collaboration and communication between multiple allied disciplines working locally, nationally, and internationally to attain optimal health …
The Net Benefits Of Controlling Bird And Rodent Pests In Wine Grape And Avocado Production, Aaron M, Anderson, Katy Kirkpatrick, Stephanie A. Shwiff
The Net Benefits Of Controlling Bird And Rodent Pests In Wine Grape And Avocado Production, Aaron M, Anderson, Katy Kirkpatrick, Stephanie A. Shwiff
USDA Wildlife Services: Staff Publications
The objective of this analysis was to estimate the net benefits of controlling bird and rodent pests in California production of wine grapes and avocados. These two crops were chosen because of the expected differences in types and extent of pest damage and methods of pest control used by growers, as well as their importance in California agriculture. A web-based survey was designed to capture grower experiences with current levels of pest damage and their expectations about damage levels without control. Information on the methods of pest control and associated costs was also solicited from growers. We obtained 83 responses …