期刊
JOURNAL OF WILDLIFE MANAGEMENT
卷 73, 期 8, 页码 1282-1291出版社
WILEY
DOI: 10.2193/2009-039
关键词
Antilocapra americana; capture myopathy; mortality; net-gun; Northern Great Plains; Odocoileus virginianus; pronghorn; ungulate; white-tailed deer
资金
- South Dakota Department of Game, Fish and Parks [75103]
- Minnesota Department of Natural Resources
- North Dakota Department of Game and Fish
- National Park Service, administered through the South Dakota Cooperative Fish and Wildlife Research Unit at SDSU
- Pope and Young Club
- Safari Club International (Dacotah and North Country Bowhunters chapters)
- Bluffland Whitetails Association
- Cottonwood County Game and Fish League
- Minnesota Bowhunters, Inc.
- Minnesota Deer Hunters Association (Bend of the River, Des Moines Valley, Rum River, and South Metro chapters)
- Minnesota State Archery Association
- Whitetail Institute of North America
- Department of Wildlife and Fisheries Sciences
Ungulate mortality from capture-related injuries is a recurring concern for researchers and game managers throughout North America and elsewhere. We evaluated effects of 7 variables to determine whether ungulate mortality could be reduced by modifying capture and handling procedures during helicopter net-gunning. During winter 2001-2006, we captured 208 white-tailed deer (Odocoileus virginianus) and 281 pronghorn (Antilocapra americana) by helicopter net-gunning throughout the Northern Great Plains. Of 281 pronghorn, 25 (8.9%) died from capture-related injuries; 12 were from direct injuries during capture, and 13 occurred postrelease. Of 208 deer, 3 (1.4%) died from injuries sustained during helicopter captures, with no mortalities documented postrelease. We used logistic regression to evaluate the probability that ungulates would die of injuries associated with helicopter net-gun captures by analyzing effects of snow depth, transport distance, ambient and rectal temperatures, pursuit and handling times, and whether individuals were transported to processing sites. The probability of capture-related mortality postrelease decreased 58% when transport distance was reduced from 14.5 km to 0 km and by 69% when pursuit time decreased from 9 minutes to,1 minute. Wildlife managers and researchers using helicopter capture services in landscapes of the Midwest should limit pursuit time and eliminate animal transport during pronghorn and white-tailed deer capture operations to minimize mortality rates postrelease. (JOURNAL OF WILDLIFE MANAGEMENT 73(8): 1282-1291; 2009)
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