Valerie Shearn-Bochsler
Valerie Shearn-Bochsler is a Wildlife Pathologist at the National Wildlife Health Center.
Science and Products
Filter Total Items: 32
Novel dermatophilosis and concurrent amyloidosis in Sanderlings (Calidris alba) from Louisiana, USA
We observed Sanderlings (Calidris alba) with facial growths in coastal Louisiana, US during summer of 2016. Severe lesions were associated with lethargy and lack of a flight response. We determined that the skin growth etiology was a bacterium of the genus Dermatophilus, rarely reported infecting birds. Sanderlings also exhibited severe amyloidosis.
Authors
Valerie I. Shearn-Bochsler, Jessica L. Schulz, Robert C. Dobbs, Jeffrey M. Lorch, J. Hardin Waddle, Daniel A. Grear
Experimental infection of common eider ducklings with Wellfleet Bay virus, a newly characterized orthomyxovirus
Wellfleet Bay virus (WFBV), a novel orthomyxovirus in the genus Quaranjavirus, was first isolated in 2006 from carcasses of common eider (Somateria mollissima) during a mortality event in Wellfleet Bay (Barnstable County, Massachusetts, USA) and has since been repeatedly isolated during recurrent mortality events in this location. Hepatic, pancreatic, splenic, and intestinal necrosis were observed
Authors
Valerie I. Shearn-Bochsler, Hon S. Ip, Anne Ballmann, Jeffrey S. Hall, Andrew B. Allison, Jennifer R. Ballard, Julie C. Ellis, Robert Cook, Samantha E. J. Gibbs, Chris P. Dwyer
Mass mortality attributed to acanthocephaliasis at a Gull-billed Tern (Gelochelidon nilotica) colony in coastal California
From 12 May 2013 to 29 May 2013, the Gull-billed Tern (Gelochelidon nilotica) colony at the San Diego Bay National Wildlife Refuge, California, experienced a mass die-off of at least 92 adults, representing 71–92% of the breeding population on the US west coast. Cause of death was determined to be peritonitis due to perforations of the intestine by a large quantity of acanthocephala (Profilicolis
Authors
Robert T. Patton, Katharine S. Goodenough, Susan De La Cruz, HannahRose M. Nevins, Rebecca A. Cole, Barbara Bodenstein, Valerie I. Shearn-Bochsler, Brian Collins, Jessie Beck, Matthew Sadowski, John Y. Takekawa
Potential for water borne and invertebrate transmission of West Nile virus in the Great Salt Lake, Utah
In November and December of 2013, a large mortality event involving 15,000 - 20,000 eared grebes (Podiceps nigricollis) occurred at the Great Salt Lake (GSL), UT. The onset of the outbreak in grebes was followed by a mortality event in > 86 bald eagles (Haliaeetus leucocephalus). During the die-off, West Nile virus (WNV) was detected by RT-PCR or viral culture in carcasses of grebes and eagles sub
Authors
Melissa Lund, Valerie I. Shearn-Bochsler, Robert J. Dusek, Jan Shivers, Erik K. Hofmeister
Susceptibility and antibody response of the laboratory model zebra finch (Taeniopygia guttata) to West Nile Virus
Since the introduction of West Nile virus (WNV) into North America in 1999 a number of passerine bird species have been found to play a role in the amplification of the virus. Arbovirus surveillance, observational studies and experimental studies have implicated passerine birds (songbirds, e.g., crows, American robins, house sparrows, and house finches) as significant reservoirs of WNV in North Am
Authors
Erik K. Hofmeister, Melissa Lund, Valerie I. Shearn-Bochsler, Christopher N. Balakrishnan
Novel Eurasian highly pathogenic avian influenza A H5 viruses in wild birds, Washington, USA, 2014
Novel Eurasian lineage avian influenza A(H5N8) virus has spread rapidly and globally since January 2014. In December 2014, H5N8 and reassortant H5N2 viruses were detected in wild birds in Washington, USA, and subsequently in backyard birds. When they infect commercial poultry, these highly pathogenic viruses pose substantial trade issues.
Authors
Hon S. Ip, Mia Kim Torchetti, Rocio Crespo, Paul Kohrs, Paul DeBruyn, Kristin G. Mansfield, Timothy Baszler, Lyndon Badcoe, Barbara L. Bodenstein, Valerie I. Shearn-Bochsler, Mary L. Killian, Janice C. Pederson, Nichole Hines, Thomas Gidlewski, Thomas J. DeLiberto, Jonathan M. Sleeman
Prevalence and spatio-temporal variation of an alopecia syndrome in polar bears (Ursus maritimus) of the southern Beaufort Sea
Alopecia (hair loss) has been observed in several marine mammal species and has potential energetic consequences for sustaining a normal core body temperature, especially for Arctic marine mammals routinely exposed to harsh environmental conditions. Polar bears (Ursus maritimus) rely on a thick layer of adipose tissue and a dense pelage to ameliorate convective heat loss while moving between sea i
Authors
Todd C. Atwood, Elizabeth L. Peacock, K.A. Burek, Valerie I. Shearn-Bochsler, Barbara L. Bodenstein, Kimberlee B. Beckmen, George M. Durner
Avian cholera causes marine bird mortality in the Bering Sea of Alaska
The first known avian cholera outbreak among wild birds in Alaska occurred during November 2013. Liver, intestinal, and splenic necrosis consistent with avian cholera was noted, and Pasteurella multocida serotype 1 was isolated from liver and lung or spleen in Crested Auklets (Aethia cristatella), Thick-billed Murres (Uria lomvia), Common Eider (Somateria mollissima), Northern Fulmars (Fulmarus gl
Authors
Barbara L. Bodenstein, Kimberlee B. Beckmen, Gay Sheffield, Kathy Kuletz, Caroline R. Van Hemert, Brenda M. Berlowski-Zier, Valerie I. Shearn-Bochsler
Cyclic avian mass mortality in the northeastern United States is associated with a novel orthomyxovirus
Since 1998, cyclic mortality events in common eiders (Somateria mollissima), numbering in the hundreds to thousands of dead birds, have been documented along the coast of Cape Cod, Massachusetts, USA. Although longitudinal disease investigations have uncovered potential contributing factors responsible for these outbreaks, detecting a primary etiological agent has proven enigmatic. Here we identif
Authors
Andrew B. Allison, Jennifer R. Ballard, Robert B. Tesh, Justin D. Brown, Mark G. Ruder, M. Kevin Keel, Brandon A. Munk, Randall M. Mickley, Samantha E. J. Gibbs, Julie C. Ellis, Amelia P.A. Travassos da Rosac, Hon S. Ip, Valerie I. Shearn-Bochsler, Matthew B. Rogers, Elodie Gheldin, Edward C. Holmes, Colin R. Parrish, Chris P. Dwyer
The fungus Trichophyton redellii sp. nov. causes skin infections that resemble white-nose syndrome of hibernating bats
Before the discovery of white-nose syndrome (WNS), a fungal disease caused by Pseudogymnoascus destructans, there were no reports of fungal skin infections in bats during hibernation. In 2011, bats with grossly visible fungal skin infections similar in appearance to WNS were reported from multiple sites in Wisconsin, USA, a state outside the known range of P. destructans and WNS at that time. Tape
Authors
Jeffrey M. Lorch, Andrew M. Minnis, Carol U. Meteyer, Jennifer A. Redell, J. Paul White, Heather M. Kaarakka, Laura K. Muller, David L. Lindner, Michelle L. Verant, Valerie I. Shearn-Bochsler, David S. Blehert
Fatal paralytic shellfish poisoning in Kittlitz's Murrelet (Brachyramphus brevirostris) nestlings, Alaska, USA
Paralytic shellfish poisoning (PSP) is an acute toxic illness in humans resulting from ingestion of shellfish contaminated with a suite of neurotoxins (saxitoxins) produced by marine dinoflagellates, most commonly in the genus Alexandrium. Poisoning also has been sporadically suspected and, less often, documented in marine wildlife, often in association with an outbreak in humans. Kittlitz's Murre
Authors
Valerie I. Shearn-Bochsler, Ellen W. Lance, Robin Corcoran, John F. Piatt, Barbara Bodenstein, Elizabeth Frame, James Lawonn
West Nile Virus transmission in winter: the 2013 Great Salt Lake Bald Eagle and Eared Grebes Mortality event
West Nile Virus (WNV) infection has been reported in over 300 species of birds and mammals. Raptors such as eagles, hawks and falcons are remarkably susceptible, but reports of WNV infection in Bald Eagles (Haliaeetus leucocephalus) are rare and reports of WNV infection in grebes (Podicipediformes) even rarer. We report an unusually large wild bird mortality event involving between 15,000-20,000 E
Authors
Hon S. Ip, Arnaud J. Van Wettere, Leslie McFarlan, Valerie I. Shearn-Bochsler, Sammie L. Dickson, JoDee Baker, Gary Hatch, Kimberly Cavender, Renee Romaine Long, Barbara L. Bodenstein
Science and Products
Filter Total Items: 32
Novel dermatophilosis and concurrent amyloidosis in Sanderlings (Calidris alba) from Louisiana, USA
We observed Sanderlings (Calidris alba) with facial growths in coastal Louisiana, US during summer of 2016. Severe lesions were associated with lethargy and lack of a flight response. We determined that the skin growth etiology was a bacterium of the genus Dermatophilus, rarely reported infecting birds. Sanderlings also exhibited severe amyloidosis.
Authors
Valerie I. Shearn-Bochsler, Jessica L. Schulz, Robert C. Dobbs, Jeffrey M. Lorch, J. Hardin Waddle, Daniel A. Grear
Experimental infection of common eider ducklings with Wellfleet Bay virus, a newly characterized orthomyxovirus
Wellfleet Bay virus (WFBV), a novel orthomyxovirus in the genus Quaranjavirus, was first isolated in 2006 from carcasses of common eider (Somateria mollissima) during a mortality event in Wellfleet Bay (Barnstable County, Massachusetts, USA) and has since been repeatedly isolated during recurrent mortality events in this location. Hepatic, pancreatic, splenic, and intestinal necrosis were observed
Authors
Valerie I. Shearn-Bochsler, Hon S. Ip, Anne Ballmann, Jeffrey S. Hall, Andrew B. Allison, Jennifer R. Ballard, Julie C. Ellis, Robert Cook, Samantha E. J. Gibbs, Chris P. Dwyer
Mass mortality attributed to acanthocephaliasis at a Gull-billed Tern (Gelochelidon nilotica) colony in coastal California
From 12 May 2013 to 29 May 2013, the Gull-billed Tern (Gelochelidon nilotica) colony at the San Diego Bay National Wildlife Refuge, California, experienced a mass die-off of at least 92 adults, representing 71–92% of the breeding population on the US west coast. Cause of death was determined to be peritonitis due to perforations of the intestine by a large quantity of acanthocephala (Profilicolis
Authors
Robert T. Patton, Katharine S. Goodenough, Susan De La Cruz, HannahRose M. Nevins, Rebecca A. Cole, Barbara Bodenstein, Valerie I. Shearn-Bochsler, Brian Collins, Jessie Beck, Matthew Sadowski, John Y. Takekawa
Potential for water borne and invertebrate transmission of West Nile virus in the Great Salt Lake, Utah
In November and December of 2013, a large mortality event involving 15,000 - 20,000 eared grebes (Podiceps nigricollis) occurred at the Great Salt Lake (GSL), UT. The onset of the outbreak in grebes was followed by a mortality event in > 86 bald eagles (Haliaeetus leucocephalus). During the die-off, West Nile virus (WNV) was detected by RT-PCR or viral culture in carcasses of grebes and eagles sub
Authors
Melissa Lund, Valerie I. Shearn-Bochsler, Robert J. Dusek, Jan Shivers, Erik K. Hofmeister
Susceptibility and antibody response of the laboratory model zebra finch (Taeniopygia guttata) to West Nile Virus
Since the introduction of West Nile virus (WNV) into North America in 1999 a number of passerine bird species have been found to play a role in the amplification of the virus. Arbovirus surveillance, observational studies and experimental studies have implicated passerine birds (songbirds, e.g., crows, American robins, house sparrows, and house finches) as significant reservoirs of WNV in North Am
Authors
Erik K. Hofmeister, Melissa Lund, Valerie I. Shearn-Bochsler, Christopher N. Balakrishnan
Novel Eurasian highly pathogenic avian influenza A H5 viruses in wild birds, Washington, USA, 2014
Novel Eurasian lineage avian influenza A(H5N8) virus has spread rapidly and globally since January 2014. In December 2014, H5N8 and reassortant H5N2 viruses were detected in wild birds in Washington, USA, and subsequently in backyard birds. When they infect commercial poultry, these highly pathogenic viruses pose substantial trade issues.
Authors
Hon S. Ip, Mia Kim Torchetti, Rocio Crespo, Paul Kohrs, Paul DeBruyn, Kristin G. Mansfield, Timothy Baszler, Lyndon Badcoe, Barbara L. Bodenstein, Valerie I. Shearn-Bochsler, Mary L. Killian, Janice C. Pederson, Nichole Hines, Thomas Gidlewski, Thomas J. DeLiberto, Jonathan M. Sleeman
Prevalence and spatio-temporal variation of an alopecia syndrome in polar bears (Ursus maritimus) of the southern Beaufort Sea
Alopecia (hair loss) has been observed in several marine mammal species and has potential energetic consequences for sustaining a normal core body temperature, especially for Arctic marine mammals routinely exposed to harsh environmental conditions. Polar bears (Ursus maritimus) rely on a thick layer of adipose tissue and a dense pelage to ameliorate convective heat loss while moving between sea i
Authors
Todd C. Atwood, Elizabeth L. Peacock, K.A. Burek, Valerie I. Shearn-Bochsler, Barbara L. Bodenstein, Kimberlee B. Beckmen, George M. Durner
Avian cholera causes marine bird mortality in the Bering Sea of Alaska
The first known avian cholera outbreak among wild birds in Alaska occurred during November 2013. Liver, intestinal, and splenic necrosis consistent with avian cholera was noted, and Pasteurella multocida serotype 1 was isolated from liver and lung or spleen in Crested Auklets (Aethia cristatella), Thick-billed Murres (Uria lomvia), Common Eider (Somateria mollissima), Northern Fulmars (Fulmarus gl
Authors
Barbara L. Bodenstein, Kimberlee B. Beckmen, Gay Sheffield, Kathy Kuletz, Caroline R. Van Hemert, Brenda M. Berlowski-Zier, Valerie I. Shearn-Bochsler
Cyclic avian mass mortality in the northeastern United States is associated with a novel orthomyxovirus
Since 1998, cyclic mortality events in common eiders (Somateria mollissima), numbering in the hundreds to thousands of dead birds, have been documented along the coast of Cape Cod, Massachusetts, USA. Although longitudinal disease investigations have uncovered potential contributing factors responsible for these outbreaks, detecting a primary etiological agent has proven enigmatic. Here we identif
Authors
Andrew B. Allison, Jennifer R. Ballard, Robert B. Tesh, Justin D. Brown, Mark G. Ruder, M. Kevin Keel, Brandon A. Munk, Randall M. Mickley, Samantha E. J. Gibbs, Julie C. Ellis, Amelia P.A. Travassos da Rosac, Hon S. Ip, Valerie I. Shearn-Bochsler, Matthew B. Rogers, Elodie Gheldin, Edward C. Holmes, Colin R. Parrish, Chris P. Dwyer
The fungus Trichophyton redellii sp. nov. causes skin infections that resemble white-nose syndrome of hibernating bats
Before the discovery of white-nose syndrome (WNS), a fungal disease caused by Pseudogymnoascus destructans, there were no reports of fungal skin infections in bats during hibernation. In 2011, bats with grossly visible fungal skin infections similar in appearance to WNS were reported from multiple sites in Wisconsin, USA, a state outside the known range of P. destructans and WNS at that time. Tape
Authors
Jeffrey M. Lorch, Andrew M. Minnis, Carol U. Meteyer, Jennifer A. Redell, J. Paul White, Heather M. Kaarakka, Laura K. Muller, David L. Lindner, Michelle L. Verant, Valerie I. Shearn-Bochsler, David S. Blehert
Fatal paralytic shellfish poisoning in Kittlitz's Murrelet (Brachyramphus brevirostris) nestlings, Alaska, USA
Paralytic shellfish poisoning (PSP) is an acute toxic illness in humans resulting from ingestion of shellfish contaminated with a suite of neurotoxins (saxitoxins) produced by marine dinoflagellates, most commonly in the genus Alexandrium. Poisoning also has been sporadically suspected and, less often, documented in marine wildlife, often in association with an outbreak in humans. Kittlitz's Murre
Authors
Valerie I. Shearn-Bochsler, Ellen W. Lance, Robin Corcoran, John F. Piatt, Barbara Bodenstein, Elizabeth Frame, James Lawonn
West Nile Virus transmission in winter: the 2013 Great Salt Lake Bald Eagle and Eared Grebes Mortality event
West Nile Virus (WNV) infection has been reported in over 300 species of birds and mammals. Raptors such as eagles, hawks and falcons are remarkably susceptible, but reports of WNV infection in Bald Eagles (Haliaeetus leucocephalus) are rare and reports of WNV infection in grebes (Podicipediformes) even rarer. We report an unusually large wild bird mortality event involving between 15,000-20,000 E
Authors
Hon S. Ip, Arnaud J. Van Wettere, Leslie McFarlan, Valerie I. Shearn-Bochsler, Sammie L. Dickson, JoDee Baker, Gary Hatch, Kimberly Cavender, Renee Romaine Long, Barbara L. Bodenstein