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View citations of publications by National Wildlife Health Center scientists since our founding in 1975. Access to full-text is provided where possible.

Wildlife Health Bulletins

Wildlife Health Bulletins are distributed to natural resource/conservation agencies to provide and promote information exchange about significant wildlife health threats.

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Wildlife Disease Case Definitions

Case definitions provide a standardized, science-based set of criteria for diagnosing disease and pathogens. This manual provides case definitions for selected diseases of importance to wildlife in Canada and the United States.

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Additional Resources

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January 1, 2000

National Wildlife Health Center's Quarterly Mortality Report National Wildlife Health Center's Quarterly Mortality Report

No abstract available.

Authors

K. A. Converse, T. Creekmore

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Selected trace elements and organochlorines: some findings in blood and eggs of nesting common eiders (Somateria mollissima) from Finland Selected trace elements and organochlorines: some findings in blood and eggs of nesting common eiders (Somateria mollissima) from Finland

In 1997 and 1998, we collected blood samples from nesting adult female common eiders (Somateria mollissima) at five locations in the Baltic Sea near coastal Finland and analyzed them for lead, selenium, mercury, and arsenic. Eggs were collected from three locations in 1997 for analysis of selenium, mercury, arsenic, and 17 organochlorines (OCs). Mean blood lead concentrations varied by...

Authors

J. Christian Franson, Tuula E. Hollmen, Robert H. Poppenga, Martti Hario, Mikael Kilpi, Milton R. Smith

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Efficacy of a type C botulism vaccine in green-winged teal Efficacy of a type C botulism vaccine in green-winged teal

We tested the efficacy of a single dose of Botumink toxoid for protecting wild green-winged teal (Anas crecca) during botulism epizootics caused by Clostridium botulinum type C. We challenged control and immunized ducks with four different doses of type C botulinum toxin to determine the LD50 for this species and to evaluate vaccine protection. Fewer immunized ducks were affected with...

Authors

Tonie E. Rocke, M.D. Samuel, P. K. Swift, G.S. Yarris

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Identification of a small, naked virus in tumor-like aggregates in cell lines derived from a green turtle, Chelonia mydas, with fibropapillomas Identification of a small, naked virus in tumor-like aggregates in cell lines derived from a green turtle, Chelonia mydas, with fibropapillomas

Serial cultivation of cell lines derived from lung, testis, periorbital and tumor tissues of a green turtle (Chelonia mydas) with fibropapillomas resulted in the in vitro formation of tumor-like cell aggregates, ranging in size from 0.5 to 2.0 mm in diameter. Successful induction of tumor-like aggregates was achieved in a cell line derived from lung tissue of healthy green turtles...

Authors

Y. Lu, A.A. Aguirre, Thierry M. Work, G.H. Balazs, V.R. Nerurkar, R. Yanagihara

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

National Wildlife Health Center's Quarterly Mortality Report National Wildlife Health Center's Quarterly Mortality Report

No abstract available.

Authors

K. A. Converse, Kimberli J.G. Miller, L. Glaser, T. Creekmore, A. Schrader

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Characterization of a herpes virus isolated from domestic geese in Australia Characterization of a herpes virus isolated from domestic geese in Australia

A herpesvirus (GHV 552/89) associated with high mortality in a flock of domestic geese in Australia was compared with duck virus enteritis (DVE) herpesvirus by cross-protection studies in domestic geese, Muscovy ducks and commercial Pekin ducks. In DVE-vaccinated geese, Muscovy ducks and Pekin ducks, mortality levels of 100, 50 and 0%, respectively, were recorded following challenge with...

Authors

R. E. Gough, W. R. Hansen

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Biological and molecular characterizations of Toxoplasma gondii strains obtained from Southern sea otters (Enhydra lutris nereis) Biological and molecular characterizations of Toxoplasma gondii strains obtained from Southern sea otters (Enhydra lutris nereis)

Toxoplasma gondii was isolated from brain or heart tissue from 15 southern sea otters (Enhydra lutris nereis) in cell cultures. These strains were used to infect mice that developed antibodies to T. gondii as detected in the modified direct agglutination test and had T. gondii tissue cysts in their brains at necropsy. Mouse brains containing tissue cysts from 4 of the strains were fed to...

Authors

Rebecca A. Cole, D. S. Lindsay, D. K. Howe, Constance L. Roderick, J. P. Dubey, N. J. Thomas, L. A. Baeten

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Pathogenicity of avian malaria in experimentally-infected Hawaii Amakihi Pathogenicity of avian malaria in experimentally-infected Hawaii Amakihi

The introduction of avian malaria (Plasmodium relictum) and mosquitoes (Culex quinquefasciatus) to the Hawaiian Islands (USA) is believed to have played a major role in the decline and extinction of native Hawaiian honeycreepers (Drepanidinae). This introduced disease is thought to be one of the primary factors limiting recovery of honeycreepers at elevations below 1,200 m where native...

Authors

Carter T. Atkinson, Robert J. Dusek, K.L. Woods, W.M. Iko

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

National Wildlife Health Center's Quarterly Mortality Report National Wildlife Health Center's Quarterly Mortality Report

No abstract available.

Authors

K. A. Converse, Kimberli J.G. Miller, L. Glaser, T. Creekmore, A. Schrader

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2000

Avian toxicologic diagnosis Avian toxicologic diagnosis

This chapter describes the sources and pathophysiology of some potential poisons that affect birds and summarizes useful laboratory tests. The diagnosis of poisoning in birds, as in mammals, requires a complete and accurate history, careful observation of clinical signs, and a thorough necropsy evaluation. Appropriate sample handling and analysis, based on consultation with the...

Authors

C.J. Sigurdson, J. C. Franson

Ecosystems Mission Area, National Wildlife Health Center

November 1, 1999

Geothermal elements in lichens of Yellowstone National Park, USA Geothermal elements in lichens of Yellowstone National Park, USA

Geothermal features (e.g. geysers, fumaroles, vents, and springs) emit gaseous mercury, sulfur and heavy metals and therefore, are natural sources of these elements in the atmosphere. Field studies of heavy metals in lichens in Italy have detected elevated concentrations near geothermal power plants, and have determined that the origin of mercury is from soil degassing, not soil...

Authors

James P. Bennett, C. M. Wetmore

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1999

The potential role of natural tumor promoters in marine turtle fibropapillomatosis The potential role of natural tumor promoters in marine turtle fibropapillomatosis

Fibropapillomatosis (FP) in green turtles Chelonia mydas is a debilitating, neoplastic disease that has reached worldwide epizootic levels. The etiology of FP is unknown but has been linked to oncogenic viruses. Toxic benthic dinoflagellates (Prorocentrum spp.) are not typically considered tumorigenic agents, yet they have a worldwide distribution and produce a tumor promoter, okadaic...

Authors

Jan H. Landsberg, G.H. Balazs, K.A. Steidinger, D.G. Baden, Thierry M. Work, D.J. Russel

Ecosystems Mission Area, National Wildlife Health Center