Date of Award:
5-1997
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Wildland Resources
Department name when degree awarded
Fisheries and Wildlife
Committee Chair(s)
Frederick F. Knowlton
Committee
Frederick F. Knowlton
Committee
Robert Schmidt
Committee
Mike Wolfe
Committee
Stan Allen
Abstract
Gray wolves (Canis lupus) are frequently captured with leg-hold traps for reintroduction, relocation to reduce depredations on livestock, or as subjects for research projects. Wolves captured with leg-hold traps often sustain injuries to their feet, legs, and teeth during struggles to escape. Other studies have shown that the use of tranquilizer devices on leg-hold traps reduces such injuries to coyotes. This study (1) assessed whether use of tranquilizer trap devices (TTDs) on leg-hold traps reduced the severity of injuries sustained by captured wolves, and (2) examined the effects TTDs have on nontarget species caught during wolf capture operations. Data were collected from 112 wolves (21 pups and 91 adults), as well as 114 nontarget animals from 9 species captured during 1996 in Minnesota. Laboratory evaluations, including radiographs and necropsies of foot and leg injuries of 37 adult wolves captured in Livestock Protection Company (LPC) drag traps equipped with TTDs containing propiopromazine hydrochloride, indicated a significant reduction in severity of injuries compared to traps without TTDs (n = 23) or equipped with placebo TTDs (n = 15).
None of the 42 nontarget individuals captured in traps equipped with TTDs containing propiopromazine hydrochloride succumbed to drug overdoses. Injuries were significantly less severe among nontarget animals caught in traps equipped with TTDs containing the tranquilizer, and fewer nontarget animals (7%) captured in traps equipped with TTDs loaded with propiopromazine sustained severe injuries and had to be destroyed, compared to nontarget animals captured in traps not equipped with propiopromazine TTDs (42%).
Checksum
2a3c065b840aa53de35e3326f998204f
Recommended Citation
Sahr, Duane P., "Merits of Using Tranquilizer Trap Devices on Leg-Hold Traps Used to Capture Gray Wolves (Canis lupus)" (1997). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 6562.
https://digitalcommons.usu.edu/etd/6562
Included in
Copyright for this work is retained by the student. If you have any questions regarding the inclusion of this work in the Digital Commons, please email us at .