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Publications

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

Filter Total Items: 1673

Antibodies against Pasteurella multocida in snow geese in the western arctic Antibodies against Pasteurella multocida in snow geese in the western arctic

To determine if lesser snow geese (Chen caerulescens caerulescens) are a potential reservoir for the Pasteurella multocida bacterium that causes avian cholera, serum samples and/or pharyngeal swabs were collected from > 3,400 adult geese breeding on Wrangel Island (Russia) and Banks Island (Canada) during 1993-1996. Pharyngeal swab sampling rarely (> 0.1%) detected birds that were...
Authors
M.D. Samuel, D.J. Shadduck, Diana R. Goldberg, V. Baranyuk, L. Sileo, J.I. Price

Identification of duck plague virus by polymerase chain reaction Identification of duck plague virus by polymerase chain reaction

A polymerase chain reaction (PCR) assay was developed for detecting duck plague virus. A 765-bp EcoRI fragment cloned from the genome of the duck plague vaccine (DP-VAC) virus was sequenced for PCR primer development. The fragment sequence was found by GenBank alignment searches to be similar to the 3′ ends of an undefined open reading frame and the gene for DNA polymerase protein in...
Authors
W. R. Hansen, Sean E. Brown, S.W. Nashold, D.L. Knudson

Avian cholera mortality in lesser snow geese nesting on Banks Island, Northwest Territories Avian cholera mortality in lesser snow geese nesting on Banks Island, Northwest Territories

Avian cholera is one of the most important diseases affecting waterfowl in North America, but little is known about its ecology and its impact on waterfowl populations. We documented avian cholera mortality in breeding lesser snow geese (Chen c. caerulescens) at the Egg River colony on Banks Island, Northwest Territories, Canada, in 1995 and 1996. Area of the breeding colony, core...
Authors
M.D. Samuel, John Y. Takekawa, G. Samelius, Diana R. Goldberg

Concentrations of selenium, mercury, and lead in blood of emperor geese in western Alaska Concentrations of selenium, mercury, and lead in blood of emperor geese in western Alaska

We found up to 10 ppm wet weight of selenium in blood samples collected from emperor geese (Chen canagica) on their breeding grounds on the Yukon‐Kuskokwim Delta in western Alaska, USA. Incubating adult females captured in late May through mid‐June 1997 had significantly higher concentrations of selenium in their blood (mean = 5.60 ppm) than adult females captured during wing molt in...
Authors
J. C. Franson, Joel A. Schmutz, L. H. Creekmore, A. C. Fowler

Drowning is not euthanasia Drowning is not euthanasia

No abstract available.
Authors
J.W. Ludders, R.H. Schmidt, F. J. Dein, P. N. Klein

Granular cell tumor in an endangered Puerto Rican Amazon parrot (Amazon vittata) Granular cell tumor in an endangered Puerto Rican Amazon parrot (Amazon vittata)

A 3 cm diameter mass from the metacarpus of a Puerto Rican Amazon parrot was diagnosed as a granular cell tumour based on light microscopy. The cytoplasmic granules were periodic-acid Schiff positive and diastase resistant. Ultrastructural characteristics of the cells included convoluted nuclei and the presence of numerous cytoplasmic tertiary lysosomes. This is only the second granular...
Authors
Charlotte Quist, K. S. Latimer, S. L. Goldade, A. Rivera, F. Joshua Dein

Environmental characteristics associated with the occurrence of avian botulism in wetlands of a northern California refuge Environmental characteristics associated with the occurrence of avian botulism in wetlands of a northern California refuge

Avian botulism is an important disease affecting many species of waterbirds in North America, but the environmental conditions that initiate outbreaks are poorly understood. To determine wetland attributes associated with outbreaks of avian botulism in waterbirds at the Sacramento National Wildlife Refuge (SNWR), California, we compared environmental characteristics between wetlands...
Authors
Tonie E. Rocke, Ned H. Euliss, Michael D. Samuel

Foreword Foreword

No abstract available.
Authors
Milton Friend, Thomas M. Yuill

Lead poisoning and trace elements in common eiders Somateria mollissima from Finland Lead poisoning and trace elements in common eiders Somateria mollissima from Finland

We collected carcasses of 52 common eider Somateria mollissima adults and ducklings and blood samples from 11 nesting eider hens in the Gulf of Finland near Helsinki in 1994, 1995 and 1996. Samples of liver tissue were analysed for arsenic, cadmium, chromium, copper, iron, lead, magnesium, manganese, mercury, molybdenum, selenium and zinc. Blood was analysed for lead, mercury and...
Authors
Tuula E. Hollmén, J. C. Franson, R.H. Poppenga, Martti Hario, Mikaei Kilpi

Epizootic vacuolar myelinopathy of the central nervous system of bald eagles (Haliaeetus leucocephalus) and American coots (Fulica americana) Epizootic vacuolar myelinopathy of the central nervous system of bald eagles (Haliaeetus leucocephalus) and American coots (Fulica americana)

Unprecedented mortality occurred in bald eagles (Haliaeetus leucocephalus) at DeGray Lake, Arkansas, during the winters of 1994-1995 and 1996-1997. The first eagles were found dead during November, soon after arrival from fall migration, and deaths continued into January during both episodes. In total, 29 eagles died at or near DeGray Lake in the winter of 1994-1995 and 26 died in the...
Authors
N. J. Thomas, C.U. Meteyer, L. Sileo
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