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Serologic Survey For Canine Infectious Diseases Among Sympatric Swift Foxes (Vulpes Velox) And Coyotes (Canis Latrans) In Southeastern Colorado, Eric M. Gese, Seija M. Karki, Mead L. Klavetter, Edward R. Schauster, Ann M. Kitchen Oct 2004

Serologic Survey For Canine Infectious Diseases Among Sympatric Swift Foxes (Vulpes Velox) And Coyotes (Canis Latrans) In Southeastern Colorado, Eric M. Gese, Seija M. Karki, Mead L. Klavetter, Edward R. Schauster, Ann M. Kitchen

United States Department of Agriculture Wildlife Services: Staff Publications

Swift foxes (\'IL~VPGCY~ OX)a nd CoVi I otes (C~rrisl r~tr(~r~a.rse) sympatric canids distributed througllout rnany regions of tlie Great Plains of North America. ~h~ prevalence of canid diseases arnong these two species where they occur syiripatrically is presently unknown. Frorn January 1997 to January 2001, we collected blood salnples from 89 switt toxes and 122 coyotes oil the US Arlny Pifion Canyon Maneuver Site, 1,as Anilrlas County, SE lorado (USA). Seroprcvalence of ailtibodies against canine parvovirr~s (C13\i) was 71 % for adult (>9 nlo old) ailcl 38% for jrlveilile (59 Ino old) swift fbxes. Adult (21 yr old) and …


Coyote Depredation Management: Current Methods And Research Needs, Brian R. Mitchell, Michael M. Jaeger, Reginald H. Barrett Mar 2004

Coyote Depredation Management: Current Methods And Research Needs, Brian R. Mitchell, Michael M. Jaeger, Reginald H. Barrett

United States Department of Agriculture Wildlife Services: Staff Publications

This paper examines the severity of livestock depredation by coyotes (Canis latrans), reviews evidence implicating breeding (or “alpha”) coyotes in the majority of incidents, evaluates currently used depredation control techniques, and suggests directions for future research. Nonlethal control ranges from varied animal husbandry practices to coyote behavioral modification or sterilization. These methods show significant promise but have not been proven effective in controlled experiments. Therefore, many livestock producers rely on lethal control, and most employ nonselective strategies aimed at local population reduction. Sometimes this approach is effective; other times it is not. This strategy can fail because the …


Coyote Attacks: An Increasing Suburban Problem, Robert M. Timm, Rex O. Baker, Joe R. Bennett, Craig C. Coolahan Mar 2004

Coyote Attacks: An Increasing Suburban Problem, Robert M. Timm, Rex O. Baker, Joe R. Bennett, Craig C. Coolahan

Vertebrate Pest Conference Proceedings: 21st (2004)

Coyote attacks on humans and pets have increased within the past 5 years in California. We discuss documented occurrences of coyote aggression and attacks on people, using data from USDA Wildlife Services, the California Department of Fish & Game, and other sources. Forty-eight such attacks on children and adults were verified from 1998 through 2003, compared to 41 attacks during the period 1988 through 1997; most incidents occurred in Southern California near the suburban-wildland interface. Attack incidents are typically preceded by a sequence of increasingly bold coyote behaviors, including: nighttime coyote attacks on pets; sightings of coyotes in neighborhoods at …


Weight And Age Of Coyotes Captured In Virginia, John M. Houben, J. Russell Mason Feb 2004

Weight And Age Of Coyotes Captured In Virginia, John M. Houben, J. Russell Mason

United States Department of Agriculture Wildlife Services: Staff Publications

We recorded the weight and age of 70 coyotes collected during depredation control efforts in western Virginia. Mean masses for adult male and female coyotes were 16.2 and 13.4 kg, respectively. Juvenile male and female coyotes weighed 14.0 and 13.0 kg, respectively. Regardless of sex, mean mass was greatest between November and January and comparable to that reported for coyotes throughout the eastern United States. Cementum aging indicated that 71% of the coyotes captured were greater than 1 year of age. Numerical trends suggest that age and sex may influence vulnerability to capture.


Coyote Depredation Management: Current Methods And Research Needs, Brian R. Mitchell, Michael M. Jaegar, Reginald H. Barrett Feb 2004

Coyote Depredation Management: Current Methods And Research Needs, Brian R. Mitchell, Michael M. Jaegar, Reginald H. Barrett

United States Department of Agriculture Wildlife Services: Staff Publications

This paper examines the severity of livestock depredation by coyotes (Canis latrans), reviews evidence implicating breeding (or “alpha”) coyotes in the majority of incidents, evaluates currently used depredation control techniques, and suggests directions for future research. Nonlethal control ranges from varied animal husbandry practices to coyote behavioral modification or sterilization. These methods show significant promise but have not been proven effective in controlled experiments. Therefore, many livestock producers rely on lethal control, and most employ nonselective strategies aimed at local population reduction. Sometimes this approach is effective; other times it is not. This strategy can fail because the …


Seasonal Activity Areas Of Coyotes In The Bear River Mountains Of Utah And Idaho, Glen F. Gantz, Frederick F. Knowlton Jan 2004

Seasonal Activity Areas Of Coyotes In The Bear River Mountains Of Utah And Idaho, Glen F. Gantz, Frederick F. Knowlton

United States Department of Agriculture Wildlife Services: Staff Publications

We studied the seasonal movement patterns and dispersal of coyotes (Canis latrans) in the Bear River Mountains of northern Utah and southern Idaho to determine whether coyotes in this montane region exhibit an altitudinal migration on a seasonal basis. We used 3 locational parameters to assess whether a seasonal altitudinal migration was evident, including overlap in seasonal activity areas, distance between harmonic mean centers of activity, and seasonal differences in mean elevations of locations. Winter and summer activity areas of every mature coyote overlapped, with mean distances between harmonic centers of seasonal activity of 1.5 km (range = 0.4–3.3 km). …