期刊
JOURNAL OF WILDLIFE DISEASES
卷 50, 期 2, 页码 224-234出版社
WILDLIFE DISEASE ASSOC, INC
DOI: 10.7589/2013-04-100
关键词
Black-tailed prairie dog; Cynomys spp. Gunnison's prairie dog; plague; rhodamine B; Utah prairie dog; vaccine; white-tailed prairie dog
资金
- Colorado Parks and Wildlife
- Colorado's Species Conservation Trust Fund
- Utah Division of Wildlife Resources
- Fish and Wildlife Foundation
- USGS
Plague, a zoonotic disease caused by the bacterium Yersinia pestis, causes high rates of mortality in prairie dogs (Cynomys spp.). An oral vaccine against plague has been developed for prairie dogs along with a palatable bait to deliver vaccine and a biomarker to track bait consumption. We conducted field trials between September 2009 and September 2012 to develop recommendations for bait distribution to deliver plague vaccine to prairie dogs. The objectives were to evaluate the use of the biomarker, rhodamine B, in field settings to compare bait distribution strategies, to compare uptake of baits distributed at different densities, to assess seasonal effects on bait uptake, and to measure bait uptake by nontarget small mammal species. Rhodamine B effectively marked prairie dogs' whiskers during these field trials. To compare bait distribution strategies, we applied baits around active burrows or along transects at densities of 32, 65, and 130 baits/ha. Distributing baits at active burrows or by transect did not affect uptake by prairie dogs. Distributing baits at rates of >= 65/ha (or >= 1 bait/active burrow) produced optimal uptake, and bait uptake by prairie dogs in the autumn was superior to uptake in the spring. Six other species of small mammals consumed baits during these trials. All four species of tested prairie dogs readily consumed the baits, demonstrating that vaccine uptake will not be an obstacle to plague control via oral vaccination.
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