Erik Hofmeister
Erik Hofmeister is a Research Virologist at the National Wildlife Health Center.
Science and Products
Filter Total Items: 36
Elodontoma in captive southern red-backed voles (Myodes gapperi) Elodontoma in captive southern red-backed voles (Myodes gapperi)
Five southern red-backed voles (Myodes gapperi) of the first generation of a wild-caught breeding colony were presented with lesions at the maxillary incisors consistent with elodontoma. The affected animals had a history of chronic weight loss, were >16 months of age, and were siblings. Radiographs of the head showed multiglobular to irregularly outlined mineral opacity masses at the...
Authors
Julia Rodriguez-Ramos Fernandez, Marie E. Pinkerton, Dennis M. Heisey, Randi Drees, Jay Schneider, Lacey Stickney, Erik K. Hofmeister, David Sanchez-Migallon Guzman
Occurrence of West Nile virus infection in raptors at the Salton Sea, California Occurrence of West Nile virus infection in raptors at the Salton Sea, California
We investigated the prevalence of West Nile virus (WNV)-neutralizing antibodies and infectious virus, and the occurrence of overwinter transmission in two raptor species during January and March 2006 at the Salton Sea, Imperial County, California. We captured 208 American Kestrels (Falco sparverius) (January, n=100; March, n=108) and 116 Burrowing Owls (Athene cunicularia) (January, n=52...
Authors
Robert J. Dusek, William M. Iko, Erik K. Hofmeister
The adrenocortical response of greater sage grouse (Centrocercus urophasianus) to capture, ACTH injection, and confinement, as measured in fecal samples The adrenocortical response of greater sage grouse (Centrocercus urophasianus) to capture, ACTH injection, and confinement, as measured in fecal samples
Investigators of wildlife populations often utilize demographic indicators to understand the relationship between habitat characteristics and population viability. Assessments of corticosterone may enable earlier detection of populations at risk of decline because physiological adjustments to habitat disturbance occur before reproductive diminutions. Noninvasive methods to accomplish...
Authors
M.D. Jankowski, D.J. Wittwer, D.M. Heisey, J. Christian Franson, Erik K. Hofmeister
Experimental infection of Hawai'i 'Amakihi (hemignathus virens) with West Nile virus and competence of a co-occurring vector, culex quinquefasciatus: potential impacts on endemic Hawaiian avifauna. Experimental infection of Hawai'i 'Amakihi (hemignathus virens) with West Nile virus and competence of a co-occurring vector, culex quinquefasciatus: potential impacts on endemic Hawaiian avifauna.
Introduced mosquito-borne avian disease is a major limiting factor in the recovery and restoration of native Hawaiian forest birds. Annual epizootics of avian pox (Avipoxvirus) and avian malaria (Plasmodium relictum) likely led to the extinction of some species and continue to impact populations of susceptible Hawaiian honeycreepers (Drepanidinae). The introduction of a novel pathogen...
Authors
Dennis Lapointe, Erik K. Hofmeister, C. T. Atkinson, R.E. Porter, Robert J. Dusek
Oral and parenteral immunization of chickens (Gallus gallus) against West Nile virus with recombinant envelope protein Oral and parenteral immunization of chickens (Gallus gallus) against West Nile virus with recombinant envelope protein
West Nile virus (WNV) causes morbidity and mortality in humans, horses, and in more than 315 bird species in North America. Currently approved WNV vaccines are designed for parenteral administration and, as yet, no effective oral WNV vaccines have been developed. WNV envelope (E) protein is a highly antigenic protein that elicits the majority of virus-neutralizing antibodies during a WNV...
Authors
C. A. Fassbinder-Orth, Erik K. Hofmeister, C. Weeks-Levy, W. H. Karasov
Impact of West Nile virus and other mortality factors on American white pelicans at breeding colonies in the northern plains of North America Impact of West Nile virus and other mortality factors on American white pelicans at breeding colonies in the northern plains of North America
American white pelicans (Pelecanus erythrorhynchos) are colonial-nesting birds and their breeding sites are concentrated in a few small areas, making this species especially vulnerable to factors that can influence productivity, such as disease, disturbance, predation, weather events and loss of nesting habitat. Nearly half of the American white pelican population breeds at four colonies...
Authors
M.A. Sovada, P.J. Pietz, K. A. Converse, D. Tommy, Erik K. Hofmeister, P. Scherr, Hon S. Ip
Science and Products
Filter Total Items: 36
Elodontoma in captive southern red-backed voles (Myodes gapperi) Elodontoma in captive southern red-backed voles (Myodes gapperi)
Five southern red-backed voles (Myodes gapperi) of the first generation of a wild-caught breeding colony were presented with lesions at the maxillary incisors consistent with elodontoma. The affected animals had a history of chronic weight loss, were >16 months of age, and were siblings. Radiographs of the head showed multiglobular to irregularly outlined mineral opacity masses at the...
Authors
Julia Rodriguez-Ramos Fernandez, Marie E. Pinkerton, Dennis M. Heisey, Randi Drees, Jay Schneider, Lacey Stickney, Erik K. Hofmeister, David Sanchez-Migallon Guzman
Occurrence of West Nile virus infection in raptors at the Salton Sea, California Occurrence of West Nile virus infection in raptors at the Salton Sea, California
We investigated the prevalence of West Nile virus (WNV)-neutralizing antibodies and infectious virus, and the occurrence of overwinter transmission in two raptor species during January and March 2006 at the Salton Sea, Imperial County, California. We captured 208 American Kestrels (Falco sparverius) (January, n=100; March, n=108) and 116 Burrowing Owls (Athene cunicularia) (January, n=52...
Authors
Robert J. Dusek, William M. Iko, Erik K. Hofmeister
The adrenocortical response of greater sage grouse (Centrocercus urophasianus) to capture, ACTH injection, and confinement, as measured in fecal samples The adrenocortical response of greater sage grouse (Centrocercus urophasianus) to capture, ACTH injection, and confinement, as measured in fecal samples
Investigators of wildlife populations often utilize demographic indicators to understand the relationship between habitat characteristics and population viability. Assessments of corticosterone may enable earlier detection of populations at risk of decline because physiological adjustments to habitat disturbance occur before reproductive diminutions. Noninvasive methods to accomplish...
Authors
M.D. Jankowski, D.J. Wittwer, D.M. Heisey, J. Christian Franson, Erik K. Hofmeister
Experimental infection of Hawai'i 'Amakihi (hemignathus virens) with West Nile virus and competence of a co-occurring vector, culex quinquefasciatus: potential impacts on endemic Hawaiian avifauna. Experimental infection of Hawai'i 'Amakihi (hemignathus virens) with West Nile virus and competence of a co-occurring vector, culex quinquefasciatus: potential impacts on endemic Hawaiian avifauna.
Introduced mosquito-borne avian disease is a major limiting factor in the recovery and restoration of native Hawaiian forest birds. Annual epizootics of avian pox (Avipoxvirus) and avian malaria (Plasmodium relictum) likely led to the extinction of some species and continue to impact populations of susceptible Hawaiian honeycreepers (Drepanidinae). The introduction of a novel pathogen...
Authors
Dennis Lapointe, Erik K. Hofmeister, C. T. Atkinson, R.E. Porter, Robert J. Dusek
Oral and parenteral immunization of chickens (Gallus gallus) against West Nile virus with recombinant envelope protein Oral and parenteral immunization of chickens (Gallus gallus) against West Nile virus with recombinant envelope protein
West Nile virus (WNV) causes morbidity and mortality in humans, horses, and in more than 315 bird species in North America. Currently approved WNV vaccines are designed for parenteral administration and, as yet, no effective oral WNV vaccines have been developed. WNV envelope (E) protein is a highly antigenic protein that elicits the majority of virus-neutralizing antibodies during a WNV...
Authors
C. A. Fassbinder-Orth, Erik K. Hofmeister, C. Weeks-Levy, W. H. Karasov
Impact of West Nile virus and other mortality factors on American white pelicans at breeding colonies in the northern plains of North America Impact of West Nile virus and other mortality factors on American white pelicans at breeding colonies in the northern plains of North America
American white pelicans (Pelecanus erythrorhynchos) are colonial-nesting birds and their breeding sites are concentrated in a few small areas, making this species especially vulnerable to factors that can influence productivity, such as disease, disturbance, predation, weather events and loss of nesting habitat. Nearly half of the American white pelican population breeds at four colonies...
Authors
M.A. Sovada, P.J. Pietz, K. A. Converse, D. Tommy, Erik K. Hofmeister, P. Scherr, Hon S. Ip