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Articles 1 - 14 of 14
Full-Text Articles in Physical Sciences and Mathematics
Assessing The Impact Of Urban Coyote On People And Pets In Austin, Travis County, Texas, Randy O. Farrar
Assessing The Impact Of Urban Coyote On People And Pets In Austin, Travis County, Texas, Randy O. Farrar
Wildlife Damage Management Conference Proceedings
The City of Austin acquires citizen reports of coyote (Canis latrans) observations or complaints through a toll-free non-emergency 311 telephone call system. The observed coyote behavior or activity reported by constituents is categorized into one of eight behavioral categories that correlate with observed changes in coyote behavior indicating an increasing risk to human safety. The categorical data is used to formulate indices of coyote behavior for accessing and monitoring the relative risk of urban coyotes to human safety over time. Behavioral indices with respect to established management zones are used to prioritize and target areas for preventing or …
Management Of Urban Coyotes And Attacks In Green Valley, Pima County, Arizona, Christopher D. Carrillo, Jim Schmidt, David Bergman, Gabriel Paz
Management Of Urban Coyotes And Attacks In Green Valley, Pima County, Arizona, Christopher D. Carrillo, Jim Schmidt, David Bergman, Gabriel Paz
Wildlife Damage Management Conference Proceedings
Coyote (Canis latrans) attacks on humans, once thought to be rare, have increased in frequency over the past decade. In Arizona, the number of wildlife human encounters has increased as our urban environments have expanded into the coyote’s natural environment. Coyotes have learned to utilize drip irrigation, pet food, household refuse, and pets as prey. The problem of potential coyote attacks is magnified when people intentionally feed coyotes. In some situations, coyotes have begun to act aggressively toward humans, chasing joggers/walkers, confronting people walking their dogs, and stalking small children. People who live in areas where coyotes are …
Suitable And Effective Coyote Control Tools For The Urban/Suburban Setting, Alan A. Huot, David L. Bergman
Suitable And Effective Coyote Control Tools For The Urban/Suburban Setting, Alan A. Huot, David L. Bergman
Wildlife Damage Management Conference Proceedings
Increases in the incidence of human conflict with coyotes in urban/suburban environments fuel a need for suitable coyote tools and methods to reduce these conflicts. Traditional tools, such as foothold traps and snares, face continued problems of acceptability in urban/suburban situations because of public anxiety about the risks to non-targets as well as other animal welfare concerns. We review the major categories of methods and tools used to prevent or reduce urban coyote-human conflicts, including exclusion (fencing), environmental and habitat modification, capture devices (traps, snares, and related devices), and shooting. We briefly discuss future technologies current under development: fertility control, …
Operational Challenges Of Solving Urban Coyote Problems In Southern California, Dennis L. Orthmeyer, Terrance A. Cox, John W. Turman, Joe R. Bennett
Operational Challenges Of Solving Urban Coyote Problems In Southern California, Dennis L. Orthmeyer, Terrance A. Cox, John W. Turman, Joe R. Bennett
Wildlife Damage Management Conference Proceedings
We present challenges, methodologies, and solutions related to mitigating urban coyote (Canis latrans) problems in southern California. The physical environment, the diverse urban structure (green belts and parks) with its abundant food resources which support high coyote densities, combined with the human component (behavior, urbanization, politics) create operational challenges. The increasing disconnect between humans and wildlife, coyote emigration/immigration into the increasing rural/urban interface, and coyote life cycles that occur exclusively in urban environments, all contribute to the increase in coyote-human conflicts. California’s southern counties’ human population has expanded 13% over the period from 1990-2000 and is projected to …
A History Of Urban Coyote Problems, Robert M. Timm, Rex O. Baker
A History Of Urban Coyote Problems, Robert M. Timm, Rex O. Baker
Wildlife Damage Management Conference Proceedings
We summarize previously published information on coyote attacks on humans in North America. This problem has developed primarily in urban and suburban areas of southern California since the early 1970s, and the frequency of attacks and other human safety incidents is increasing. Similar attacks are now known from at least 18 states in addition to California and from 4 Canadian provinces, with the majority of attacks occurring since the early 1990s. We review early explorers’ and settlers’ accounts of coyotes in the Los Angeles area, as well as development of coyote control programs during the 20th century. We also describe …
Relative Effectiveness Of Various Breeds Of Livestock Guarding Dogs For Reducing Predation On Domestic Sheep In Colorado, William F. Andelt, Stuart N. Hopper
Relative Effectiveness Of Various Breeds Of Livestock Guarding Dogs For Reducing Predation On Domestic Sheep In Colorado, William F. Andelt, Stuart N. Hopper
Great Plains Wildlife Damage Control Workshop Proceedings
We surveyed 59 livestock producers that used multiple breeds of livestock guarding dogs to determine their ratings of the relative effectiveness of guarding dogs for deterring predation on domestic sheep in Colorado during 1995. Significantly (P < 0.05) more producers rated Akbash dogs as more effective than Great Pyrenees for deterring predation by coyotes (Canis latrans), black bears (Ursus americanus), mountain lions (Felis concolor), domestic dogs, and all predators combined. Significantly more producers also rated Akbash dogs as more effective than Komondors for deterring predation by coyotes and all predators combined. Great Pyrenees and Komondors were rated as similar in effectiveness for deterring predation. Significantly more producers rated Akbash dogs as more aggressive, …
Development And Registration Of A Practical Tranquilizer Trap Device (Ttd) For Foot-Hold Traps, Doris E. Zemlicka, D. Pete Sahr, Peter J. Savarie, Frederick F. Knowlton, F. Sherman Blom, Jerrold L. Belant
Development And Registration Of A Practical Tranquilizer Trap Device (Ttd) For Foot-Hold Traps, Doris E. Zemlicka, D. Pete Sahr, Peter J. Savarie, Frederick F. Knowlton, F. Sherman Blom, Jerrold L. Belant
Great Plains Wildlife Damage Control Workshop Proceedings
Foot-hold traps can be used to selectively capture coyotes (Canis latrans) and wolves (C. lupus). However, injuries to captured animals sometimes occur when they struggle to escape. Tranquilizer trap devices (TTDs) reduce struggling and injuries but prototype TTDs were too expensive for widespread use by Animal Damage Control (ADC) operational personnel. For this reason, the Pocatello Supply Depot (PSD) and the National Wildlife Research Center (NWRC) are investigating alternative TTD designs. A molded-rubber TTD will be available from the PSD for coyotes, and the NWRC continues to explore other cheaper TTD designs. A practical TTD design …
The Coyote As An Ecological Model, Thomas A. Eddy, Cindy M. Moore
The Coyote As An Ecological Model, Thomas A. Eddy, Cindy M. Moore
Great Plains Wildlife Damage Control Workshop Proceedings
Teachers (K-12) in a prairie ecology workshop in Kansas used the coyote as the focus for the design of an educational strategy to integrate many concepts and principles of ecology into the various subject areas of the curriculum. A topical outline was developed as a guide for implementing the study.
Behavioral Principles Governing Conditioned Food Aversions Based On Deception, Michael R. Conover
Behavioral Principles Governing Conditioned Food Aversions Based On Deception, Michael R. Conover
National Wildlife Research Center Repellents Conference 1995
We often are unable to reduce wildlife damage because of our inability to apply a repellent directly to the plant, animal, or item that needs protection. Conditioned food aversions based on deception (CFABD) is one method that can be used to extend protection to these items (hereafter called models). In CFABD, the model is not treated; instead mimics of the model are created and then treated with a chemical that will sicken, but not kill, the animal consuming them. This approach is a reverse form of Batesian mimicry; normally the models are poisonous and the mimics are innocuous. Yet, the …
Cue Enhancement Of Lithium-Chloride-Induced Mutton/Sheep Aversions In Coyotes, Ray T. Sterner
Cue Enhancement Of Lithium-Chloride-Induced Mutton/Sheep Aversions In Coyotes, Ray T. Sterner
Great Plains Wildlife Damage Control Workshop Proceedings
In an enclosure-type study, I investigated the use of odor, auditory, and visual cues to enhance lithium-chloride (LiCl)- induced prey aversion in coyotes (Canis latrans). Eight adult, male, wild-caught coyotes that killed 2 adult sheep during successive daily, 1 -hr trials were assigned to LiCl- and sodium-chloride (NaCl)-bait groups. The 4 LiCl-bait coyotes were sequentially presented with leg-of-sheep and whole-sheep carcasses injected with a 33% LiCl water solution (4.5 ml/kg) 1 -hr daily until bait shy. The 4 NaCl coyotes were exposed to baits and carcasses injected with 25% NaCl/water solution (4.5 ml/kg) for matched trials. Additionally, 2 …
Predation Of Big Game And Livestock In The Texas Trans-Pecos, S. Kemble Canon
Predation Of Big Game And Livestock In The Texas Trans-Pecos, S. Kemble Canon
Great Plains Wildlife Damage Control Workshop Proceedings
Predation of livestock and big game remains a matter of concern for ranch managers and operators in the Trans-Pecos. Current evidence indicates that mountain lions (Felis concolor), bobcats (Lynx rufus), and coyotes (Canis latrans) are the primary predators involved, although little information is available on bobcats. A gradual shift from sheep to cattle management has resulted in a corresponding decrease in the intensity of predator control efforts for livestock protection. However, potential lease hunting income has renewed predator control efforts for protection of the 3 primary big game species, pronghorn antelope (Antilocapra americana), …
Canine And Gray Fox Rabies Epizootics In Texas, Keith A. Clark, Pamela J. Wilson
Canine And Gray Fox Rabies Epizootics In Texas, Keith A. Clark, Pamela J. Wilson
Great Plains Wildlife Damage Control Workshop Proceedings
In 1994, 2 ongoing rabies epizootics were declared a state health emergency: canine rabies in South Texas and gray fox (Urocyon cinereoargenteus) rabies in West-Central Texas. Prior to 1988, rabid coyotes (Canis latrans) were infrequently reported in Texas. In 1988, Starr and Hidalgo counties, located in extreme South Texas, experienced an epizootic of canine rabies resulting in 11 laboratory-confirmed cases of canine rabies in domestic dogs (Canis familiaris) and 6 cases in coyotes. By 1991, the epizootic had expanded approximately 160 km north of the United States (US)-Mexico border and included 10 counties. During …
The Oral Rabies Vaccination Project And The Experimental Use Of Raboral V-Rg In The South Texas Canine Rabies Epizootic, M. Gayne Fearneyhough
The Oral Rabies Vaccination Project And The Experimental Use Of Raboral V-Rg In The South Texas Canine Rabies Epizootic, M. Gayne Fearneyhough
Great Plains Wildlife Damage Control Workshop Proceedings
Beginning in October 1988, Texas experienced the onset of an expanding epizootic of canine rabies in far South Texas. That epizootic now involves 18 counties, with 522 laboratory confirmed cases as of December 1994. Approximately 50% of those cases have occurred in coyotes (Canis latrans) and most of the remainder in domestic dogs. Forty-three "spill over" cases have been reported in 7 other species, both wild and domestic. Since 1988, over 1600 people in South Texas have received postexposure rabies treatment due to potential exposure to a rabid animal and 2 human deaths have been attributed to this virus strain. …
Using Telemetry Equipment For Monitoring Traps And Snares, Thomas D. Halstead, Kenneth S. Gruver, Robert L. Phillips, Richard E. Johnson
Using Telemetry Equipment For Monitoring Traps And Snares, Thomas D. Halstead, Kenneth S. Gruver, Robert L. Phillips, Richard E. Johnson
Great Plains Wildlife Damage Control Workshop Proceedings
Specialized radio transmitters were developed for use in monitoring large mammal trap and snare activity. Prototype devices were manufactured by 4 wildlife telemetry companies based on specifications we developed in consultation with electronic engineering personnel. Power outputs from individual transmitters ranged from 10 to 100 milliwatts (mw). Range testing in the gently rolling terrain of northeastern Colorado indicated that ground-tracking distances with truck-mounted dual beam antennas exceeded 40 km. Field tests were conducted using transmitters with traps and foot snares set for coyotes (Canis latrans) in California, black bears (Ursus americanus) in Oregon, and mountain lions …