Relative vulnerability of coyotes to removal methods on a northern California ranch

Article Abstract:

The US sheep industry has been affected by coyote predation, and trapping and preventive removal are used to deal with the problem. A study in northern California has found that younger coyotes are more likely to be captured, and this may be due to their lack of experience. Older coyotes were more likely to be captured during the spring and summer, the time that they are bringing up offspring. Efforts to deal with predation appear to trap the group least likely to attack sheep. Livestock protection collars should target those coyotes most likely to attack sheep.

Environmental aspects, Wildlife management

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Territoriality and breeding status of coyotes relative to sheep predation

Article Abstract:

Depredation by coyotes is an important problem for sheep producers in the western US and is seen as a major cause of the sheep industry's decline. However, little is known about coyote behaviour when sheep are present. A new study investigates the behaviour amd territoriality of coyotes on a large sheep ranch in California. The study shows the main predators of sheep were breeding coyotes. The removal of territorial breeders known to kill sheep reduced depredation suggesting a need for management to target breeding individuals where predation is a problem.

Patient outcomes, Mortality, Predation (Biology), Sheep

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Salivary DNA evidence convicts breeding male coyotes of killing sheep

Article Abstract:

Salivary DNA obtained from attack wounds on domestic sheep carcasses is used to identify the species of predator responsible for the kill, as well as the sex and individual identity of coyotes (Canis latrans) that killed sheep. The results suggest that predator control should be targeted at breeding male coyotes. Salivary DNA is potentially powerful means of both investigating predation patterns and evaluating the effectiveness of control at targeting individuals that kill livestock.

United States, Farm Machinery and Equipment Manufacturing, Farm machinery and equipment, Livestock Feeders, Physiological aspects, Genetic aspects, Protection and preservation, Salivary glands, Saliva, Predator control, Livestock

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