Publications

seroprevalence of lyme disease in gray wolves from minnesota and wisconsin.	to determine the seroprevalence of lyme disease in gray wolves (canis lupus) from various counties of minnesota and wisconsin (usa), 589 serum samples were collected from 528 wolves from 1972 to 1989. an indirect fluorescent antibody (ifa) test was used to detect the presence of antibodies against borrelia burgdorferi. titers of greater than or equal to 1:100 were considered positive. results were confirmed by testing a few selected sera by western blotting. of the 589 sera tested, 15 (3%) had i ...	1992	1602567
sympatric wolf and coyote populations of the western great lakes region are reproductively isolated.	interpretation of the genetic composition and taxonomic history of wolves in the western great lakes region (wglr) of the united states has long been debated and has become more important to their conservation given the recent changes in their status under the endangered species act. currently, the two competing hypotheses on wglr wolves are that they resulted from hybridization between (i) grey wolves (canis lupus) and western coyotes (c. latrans) or (ii) between grey wolves and eastern wolves ...	2010	20854277
longitudinal analysis of attitudes toward wolves.	understanding individual attitudes and how these predict overt opposition to predator conservation or direct, covert action against predators will help to recover and maintain them. studies of attitudes toward wild animals rely primarily on samples of individuals at a single time point. we examined longitudinal change in individuals' attitudes toward gray wolves (canis lupus). in the contiguous united states, amidst persistent controversy and opposition, abundances of gray wolves are at their hi ...	2013	23293913
demographic and component allee effects in southern lake superior gray wolves.	recovering populations of carnivores suffering allee effects risk extinction because positive population growth requires a minimum number of cooperating individuals. conservationists seldom consider these issues in planning for carnivore recovery because of data limitations, but ignoring allee effects could lead to overly optimistic predictions for growth and underestimates of extinction risk. we used bayesian splines to document a demographic allee effect in the time series of gray wolf (canis ...	2016	26930665
blood does not buy goodwill: allowing culling increases poaching of a large carnivore.	quantifying environmental crime and the effectiveness of policy interventions is difficult because perpetrators typically conceal evidence. to prevent illegal uses of natural resources, such as poaching endangered species, governments have advocated granting policy flexibility to local authorities by liberalizing culling or hunting of large carnivores. we present the first quantitative evaluation of the hypothesis that liberalizing culling will reduce poaching and improve population status of an ...	2016	27170719
gray wolf exposure to emerging vector-borne diseases in wisconsin with comparison to domestic dogs and humans.	world-wide concern over emerging vector-borne diseases has increased in recent years for both animal and human health. in the united sates, concern about vector-borne diseases in canines has focused on lyme disease, anaplasmosis, ehrlichiosis, and heartworm which infect domestic and wild canids. of these diseases, lyme and anaplasmosis are also frequently diagnosed in humans. gray wolves (canis lupus) recolonized wisconsin in the 1970s, and we evaluated their temporal and geographic patterns of ...	2016	27898670