Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

The Coyote Lure Operative Device revisited: A fresh look at an old idea

Authors

Are R. Berentsen
Robert M. Timm
Robert H. Schmidt

Authors Affiliations

A.R. Berentsen is Research Associate, Department of Forest, Range and Wildlife Sciences, Utah State University, Logan; R.M. Timm is Superintendent and Cooperative Extension Specialist, UC Hopland Research and Extension Center; R.H. Schmidt is Associate Professor, Department of Environment and Society, Utah State University, Logan. Funding was provided by the California Department of Food and Agriculture Vertebrate Pest Control Research Advisory Committee, contract 03–0325. The authors thank John Hays, Jr., Jennifer Smith and Gary Johnson for assistance in the field, and two anonymous reviewers for providing helpful comments and suggestions.

Publication Information

Hilgardia 61(1):20-23. DOI:10.3733/ca.v061n01p20. January 2007.

PDF of full article, Cite this article

Abstract

We field-tested the Coyote Lure Operative Device (CLOD), a bait delivery system for coyotes originally conceived by UC Davis researchers in the 1980s. Our objectives were to determine whether free-ranging coyotes would activate CLODs repeatedly when exposed to them over a 12-month period, and whether CLOD activations varied by season. We placed CLODs in pastures with a history of chronic sheep depredation at the UC Hopland Research and Extension Center in Mendocino County. Free-ranging coyotes activated the CLODs repeatedly, but more CLODs were activated during the winter months than at other times of the year. Our study suggests that the CLOD has the potential to become an important tool for managing coyote predation on livestock when used to deliver contraceptive or predacide baits.

References

Barnum DA, Fagre DB, Marsh RE. Hopland tests of bait delivery devices. Proc Ann Meeting West Reg Coord Comm 26, Waco, TX. 1982. 14-6.

Berentsen AR, Schmidt RH, Timm RM. Repeated exposure of coyotes to the Coyote Lure Operative Device. Wildl Soc Bull. 2006. 34(3):809-14. https://doi.org/10.2193/0091-7648(2006)34[809:REOCTT]2.0.CO;2

Bromley C, Gese EM. Surgical sterilization as a method of reducing coyote predation on domestic sheep. J Wildlife Manage. 2001. 65(3):510-9. https://doi.org/10.2307/3803104

Buseck RS. 2004. Development of a coyote (Canis latrans) specific delivery system for oral contraceptives. MS thesis, University of Wyoming, Laramie.

Ebbert SM. 1988. Field evaluation and improvement of a new system for delivering substances to coyotes. MS thesis, Texas A&M University, College Station.

Jaeger MM, Blejwas KM, Sacks BN, et al. Targeting alphas can make coyote control more effective and socially acceptable. Cal Ag. 2001. 55(6):32-6.

Johnston JJ. Evaluation of cocoa and coffee derived methylxanthines as a toxicant for control of predatory coyotes. J Agric Food Chem. 2005. 53:4069-75. https://doi.org/10.1021/jf050166p PubMed PMID: 15884841

Marsh RE, Howard WE, McKenna SM, et al. A new system for delivery of predacides or other active ingredients for coyote management. Proc Vertebr Pest Conf. 1982. 10:229-33.

Mason JR, McConnell JE. Hedonic responses of coyotes to 15 aqueous taste solutions. J Wildl Res. 1997. 2:21-4.

Minnis DL. Wildlife policy-making by the electorate: An overview of citizen-sponsored ballot measures on hunting and trapping. Wildl Soc Bull. 1998. 26(1):75-83.

[NASS] [National Agricultural Statistics Service]. Sheep and goats. 1995. Washington, DC: US Department of Agriculture. (document released Jan. 27, 1995).

NASS. Sheep and goats. 2000. Washington, DC: US Department of Agriculture. 14p. (document released Jan. 28, 2000).

NASS. Sheep and goats. 2005a. Washington, DC: US Department of Agriculture. 15p. (document released Jan. 28, 2005).

NASS. Sheep and goats death loss. 2005b. Washington, DC: US Department of Agriculture. 11p. (document released May 6, 2005).

Phillips RL, Nunley GL. Historical perspective on coyote control methods in Texas. Coyotes in the Southwest: A Compendium of our Knowledge. 1995. San Angelo: Texas Parks and Wildlife Department. p. 148-57.

Sacks BN, Blejwas KM, Jaeger MM. Relative vulnerability of coyotes to removal methods on a Northern California ranch. J Wildl Manage. 1999. 63(3):939-49. https://doi.org/10.2307/3802808

Scrivner JH, Howard WE, Murphy AH, Hays JR. Sheep losses to predators on a California range, 1973–1983. J Range Manage. 1985. 38(5):418-21. https://doi.org/10.2307/3899712

Sequin ES, Jaeger MM, Brussard PF, Barrett RH. Wariness of coyotes to camera traps relative to social status and territory boundaries. Can J Zool. 2003. 81:2015-25. https://doi.org/10.1139/z03-204

Timm RM, Vaughn CE (eds.). 2003. Research at Hopland, 1951–2001: An Annotated Bibliography. UC Hopland Research and Extension Center. UC ANR Pub 104. 304 p.

Windberg LA, Knowlton FF. Relative vulnerability of coyotes to some capture procedures. Wildl Soc Bull. 1990. 18(3):282-90.

Berentsen A, Timm R, Schmidt R. 2007. The Coyote Lure Operative Device revisited: A fresh look at an old idea. Hilgardia 61(1):20-23. DOI:10.3733/ca.v061n01p20
Webmaster Email: wsuckow@ucanr.edu