WYOMING POCKET GOPHER (Thomomys clusius) SURVEYS IN SOUTH-CENTRAL WYOMING
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Hazards to Grizzly Bears of Strychnine Baiting for Pocket Gopher Control
The Targhee and Bridger-Teton national forests in Idaho and Wyoming provide habitat for grizzly bears (Ursus arctos) from the Yellowstone National Park population (Anonymous 1979). Portions of the forests contain reforestation units scheduled for pocket gopher (Thomomys talpoides) control with strychnine alkaloid-treated grain, a practice used commonly to reduce damage to conifer seedlings by p...
متن کاملMorphological Adaptations for Digging and Climate-Impacted Soil Properties Define Pocket Gopher (Thomomys spp.) Distributions
Species ranges are mediated by physiology, environmental factors, and competition with other organisms. The allopatric distribution of five species of northern Californian pocket gophers (Thomomys spp.) is hypothesized to result from competitive exclusion. The five species in this environmentally heterogeneous region separate into two subgenera, Thomomys or Megascapheus, which have divergent di...
متن کاملPreliminary Field Evaluation of a New Formulation of Rozol ( Chlorophacinone ) Bait against Pocket Gophers in Colorado
Mountain pocket gophers (Thomomy's talpoides) and plains pocket gophers (Geomys bursarius) are a problem to rangelands in Colorado. A new chlorophacinone (50 ppm) pelleted bait was applied to active burrow systems by hand baiting. Efficacy on the Geomys plot was 100%, while 94.73% of the Thomomys were controlled with the product. Introduction Pocket gophers, of the family Geomyidae, are indigen...
متن کاملIncreasing Pocket Gopher Problems in Reforestation
Concern over pocket gopher damage to conifer seedlings is increasing rapidly in the northwestern United States. The evolution of the pocket gopher (Thomomys spp.) has resulted in an animal that occurs throughout northwest forested areas and responds to site disturbances by increasing numbers and distribution. Pocket gophers kill or slow growth of conifer seedlings. More extensive logging, wildf...
متن کاملComparison of Three Traps Used for Pocket Gopher Management (Thomomys Bottae) in Alfalfa Fields
INTRODUCTION Valley pocket gophers (Thomomys bottae) are a common agricultural pest in many areas of Utah, Nevada and California. Pocket gophers predominantly eat roots, although they will pull vegetation into their burrows, and eat plants immediately adjacent to their burrow holes. Unlike other fossorial rodents (rodents that live under the ground), pocket gophers are active year round through...
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