Wildlife ecology and management studies have been widely criticized for deficiencies in design or analy­ sis. Manipulative experiments-with controls, randomization, and replication in space and time-provide power­ ful ways of learning about natural systems and establishing causal relationships, but such studies are rare in our field. Observational studies and sample surveysare more common; they...

Noninvasive genetic sampling provides great potential for research and management applications in wildlife biology. llesearchers can obtain DNA from a variety of sources including hair, feces, urine, feathers, shed skin, saliva, and egg shells without handling or observing animals. These samples can then be used to identify the presence of rare or elusive species, count and identify individuals...

Weighted distributions can be used to fit various forms of resource selection probability functions (RSPF) under the useversus-available study design (Lele and Keim 2006). Although valid, the numerical maximization procedure used by Lele and Keim (2006) is unstable because of the inherent roughness of the Monte Carlo likelihood function. We used a combination of the methods of partial likelihoo...

We present a comprehensive look at a sample of bear spray incidents that occurred in Alaska, USA, from 1985 to 2006. We analyzed 83 bear spray incidents involving brown bears (Ursus arctos; 61 cases, 74%), black bears (Ursus americanus; 20 cases, 24%), and polar bears (Ursus maritimus; 2 cases, 2%). Of the 72 cases where persons sprayed bears to defend themselves, 50 (69%) involved brown bears,...

Burrows within black-tailed prairie dog (Cynomys ludovicianus) colonies on the Rocky Mountain Arsenal National Wildlife Refuge, Colorado, were dusted with deltamethrin insecticide to reduce flea (Insecta: Siphonaptera) abundance. Flea populations were monitored pre- and posttreatment by combing prairie dogs and collecting fleas from burrows. A single application of deltamethrin significantly re...

County extension agents in Colorado indicated that extension bulletins were the most important type of assistance needed for their clientele in the area of wildlife damage control. County extension agents indicated that pocket gophers, prairie dogs, skunks, and coyotes were the most important of 32 species requiring extension information for their clientele. Introduction Extension wildlife spec...

Acquisitionof nonspeci¢cBartonella strainsby thenorthern grasshoppermouse (Onychomys leucogaster ) Ying Bai, Michael Y. Kosoy, Jack F. Cully, Thiagarajan Bala, Chris Ray & Sharon K. Collinge Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA; Division of Vector-Borne Infectious Diseases, National Center for Infectious Diseases, Centers for Disease Control a...

Interest in parasites of wildlife has increased significantly in recent years. Pleasingly, the role of wildlife as the source of emerging infectious diseases has been countered by reasoned and balanced responses from ecologists and conservationists concerned about the dearth of knowledge of the infectious agents harboured by wildlife, their impact on wildlife health, the factors, both natural a...

S A M U E L E . S A U N D E R S , † J A S O N C . B A R T Z , ‡ K U R T C . V E R C A U T E R E N , § A N D S H A N N O N L . B A R T E L T H U N T * , † Department of Civil Engineering, Peter Kiewit Institute, University of NebraskasLincoln, Omaha, Nebraska 68588, Department of Medical Microbiology and Immunology, Creighton University, Omaha, Nebraska 68178, and USDA Animal and Plant Health In...