Luke R Iwanowicz, Ph.D. (Former Employee)
Science and Products
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Identification of largemouth bass virus in the introduced Northern snakehead inhabiting the Cheasapeake Bay watershed Identification of largemouth bass virus in the introduced Northern snakehead inhabiting the Cheasapeake Bay watershed
The Northern Snakehead Channa argus is an introduced species that now inhabits the Chesapeake Bay. During a preliminary survey for introduced pathogens possibly harbored by these fish in Virginia waters, a filterable agent was isolated from five specimens that produced cytopathic effects in BF-2 cells. Based on PCR amplification and partial sequencing of the major capsid protein (MCP)...
Authors
Luke R. Iwanowicz, Christine L. Densmore, Cassidy M. Hahn, Phillip McAllister, John Odenkirk
Differential expression profiles of microRNA in the little brown bat (Myotis lucifugus) associated with white nose syndrome affected and unaffected individuals Differential expression profiles of microRNA in the little brown bat (Myotis lucifugus) associated with white nose syndrome affected and unaffected individuals
First documented in New York State in 2006, white nose syndrome (WNS) quickly became the leading cause of mortality in hibernating bat species in the United States. WNS is caused by a psychrophilic fungus, Geomyces destructans. Clinical signs of this pathogen are expressed as a dusty white fungus predominately around the nose and on the wings of affected bats. Relatively new biomarkers...
Authors
D.D. Iwanowicz, L. R. Iwanowicz, N.P. Hitt, T.L. King
Chemical contaminants in water and sediment near fish nesting sites in the Potomac River basin: determining potential exposures to smallmouth bass (Micropterus dolomieu) Chemical contaminants in water and sediment near fish nesting sites in the Potomac River basin: determining potential exposures to smallmouth bass (Micropterus dolomieu)
The Potomac River basin is an area where a high prevalence of abnormalities such as testicular oocytes (TO), skin lesions, and mortality has been observed in smallmouth bass (SMB, Micropterus dolomieu). Previous research documented a variety of chemicals in regional streams, implicating chemical exposure as one plausible explanation for these biological effects. Six stream sites in the...
Authors
Dana W. Kolpin, Vicki Blazer, James L. Gray, Michael J. Focazio, John A. Young, David A. Alvarez, Luke R. Iwanowicz, William T. Foreman, Edward T. Furlong, Gary K. Speiran, Steven D. Zaugg, Laura E. Hubbard, Michael T. Meyer, Mark W. Sandstrom, Larry B. Barber
Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay
Reduced recruitment of yellow perch has been noted for a number of years in certain urbanized watersheds (South and Severn Rivers) of the Chesapeake Bay. Other rapidly developing watersheds such as Mattawoman Creek are more recently showing evidence of reduced recruitment of anadromous fishes. In this study, we used a battery of biomarkers to better document the reproductive health of...
Authors
Vicki Blazer, Alfred E. Pinkney, Jill A. Jenkins, Luke R. Iwanowicz, Steven Minkkinen, Rassa O. Draugelis-Dale, James H. Uphoff
Bacterial etiology in diseased fishes, primarily smallmouth bass Micropterus dolomieu, within the Chesapeake Bay drainage in 2009-2011 Bacterial etiology in diseased fishes, primarily smallmouth bass Micropterus dolomieu, within the Chesapeake Bay drainage in 2009-2011
No abstract available.
Authors
Clifford E. Starliper, Vicki Blazer, Luke R. Iwanowicz, Heather L. Walsh
Prevalent flucocorticoid and androgen activity in US water sources Prevalent flucocorticoid and androgen activity in US water sources
Contamination of the environment with endocrine disrupting chemicals (EDCs) is a major health concern. The presence of estrogenic compounds in water and their deleterious effect are well documented. However, detection and monitoring of other classes of EDCs is limited. Here we utilize a high-throughput live cell assay based on sub-cellular relocalization of GFP-tagged glucocorticoid and...
Authors
Diana A. Stavreva, Anuja A. George, Paul Klausmeyer, Lyuba Varticovski, Daniel Sack, Ty C. Voss, R. Louis Schiltz, Vicki Blazer, Luke R. Iwanowicz, Gordon L. Hager
Non-USGS Publications**
Iwanowicz, L., L Brown, B Eltz, F Juanes and J Murt (2004) Book Review. In a Perfect Ocean: The state of fisheries and ecosystems in the North Atlantic Ocean. Reviews in Fish Biology and Fisheries.14: 149-151.
McIntire, M., L R Iwanowicz and A E Goodwin (2003) Molecular, physical and clinical evidence that Golden Shiner Virus (GSV) and Grass Carp Reovirus (GCRV) are variants of the same virus. Journal of Aquatic Animal Health. 15: 257-263.
Iwanowicz, L.R. and A E Goodwin (2002) Characterization of a new bacilliform fathead minnow rhabdovirus that produces syncytia in tissue culture. Archives of Virology 147: 889 – 916.
Iwanowicz, L.R. A E Goodwin and J Harshbarger (2001) Embryonal rhabdomyosarcoma of the giant gourami, Colisa fasciata (Bloch & Schneider). Journal of Fish Diseases 24:177-179
Iwanowicz, L.R. A E Goodwin and N Heil (2000) A small RNA virus isolated from apparently healthy wild sandbar shiners, Notropis scepticus. Journal of Fish Diseases 23: 349-352.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 27
No Result Found
Filter Total Items: 111
Identification of largemouth bass virus in the introduced Northern snakehead inhabiting the Cheasapeake Bay watershed Identification of largemouth bass virus in the introduced Northern snakehead inhabiting the Cheasapeake Bay watershed
The Northern Snakehead Channa argus is an introduced species that now inhabits the Chesapeake Bay. During a preliminary survey for introduced pathogens possibly harbored by these fish in Virginia waters, a filterable agent was isolated from five specimens that produced cytopathic effects in BF-2 cells. Based on PCR amplification and partial sequencing of the major capsid protein (MCP)...
Authors
Luke R. Iwanowicz, Christine L. Densmore, Cassidy M. Hahn, Phillip McAllister, John Odenkirk
Differential expression profiles of microRNA in the little brown bat (Myotis lucifugus) associated with white nose syndrome affected and unaffected individuals Differential expression profiles of microRNA in the little brown bat (Myotis lucifugus) associated with white nose syndrome affected and unaffected individuals
First documented in New York State in 2006, white nose syndrome (WNS) quickly became the leading cause of mortality in hibernating bat species in the United States. WNS is caused by a psychrophilic fungus, Geomyces destructans. Clinical signs of this pathogen are expressed as a dusty white fungus predominately around the nose and on the wings of affected bats. Relatively new biomarkers...
Authors
D.D. Iwanowicz, L. R. Iwanowicz, N.P. Hitt, T.L. King
Chemical contaminants in water and sediment near fish nesting sites in the Potomac River basin: determining potential exposures to smallmouth bass (Micropterus dolomieu) Chemical contaminants in water and sediment near fish nesting sites in the Potomac River basin: determining potential exposures to smallmouth bass (Micropterus dolomieu)
The Potomac River basin is an area where a high prevalence of abnormalities such as testicular oocytes (TO), skin lesions, and mortality has been observed in smallmouth bass (SMB, Micropterus dolomieu). Previous research documented a variety of chemicals in regional streams, implicating chemical exposure as one plausible explanation for these biological effects. Six stream sites in the...
Authors
Dana W. Kolpin, Vicki Blazer, James L. Gray, Michael J. Focazio, John A. Young, David A. Alvarez, Luke R. Iwanowicz, William T. Foreman, Edward T. Furlong, Gary K. Speiran, Steven D. Zaugg, Laura E. Hubbard, Michael T. Meyer, Mark W. Sandstrom, Larry B. Barber
Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay
Reduced recruitment of yellow perch has been noted for a number of years in certain urbanized watersheds (South and Severn Rivers) of the Chesapeake Bay. Other rapidly developing watersheds such as Mattawoman Creek are more recently showing evidence of reduced recruitment of anadromous fishes. In this study, we used a battery of biomarkers to better document the reproductive health of...
Authors
Vicki Blazer, Alfred E. Pinkney, Jill A. Jenkins, Luke R. Iwanowicz, Steven Minkkinen, Rassa O. Draugelis-Dale, James H. Uphoff
Bacterial etiology in diseased fishes, primarily smallmouth bass Micropterus dolomieu, within the Chesapeake Bay drainage in 2009-2011 Bacterial etiology in diseased fishes, primarily smallmouth bass Micropterus dolomieu, within the Chesapeake Bay drainage in 2009-2011
No abstract available.
Authors
Clifford E. Starliper, Vicki Blazer, Luke R. Iwanowicz, Heather L. Walsh
Prevalent flucocorticoid and androgen activity in US water sources Prevalent flucocorticoid and androgen activity in US water sources
Contamination of the environment with endocrine disrupting chemicals (EDCs) is a major health concern. The presence of estrogenic compounds in water and their deleterious effect are well documented. However, detection and monitoring of other classes of EDCs is limited. Here we utilize a high-throughput live cell assay based on sub-cellular relocalization of GFP-tagged glucocorticoid and...
Authors
Diana A. Stavreva, Anuja A. George, Paul Klausmeyer, Lyuba Varticovski, Daniel Sack, Ty C. Voss, R. Louis Schiltz, Vicki Blazer, Luke R. Iwanowicz, Gordon L. Hager
Non-USGS Publications**
Iwanowicz, L., L Brown, B Eltz, F Juanes and J Murt (2004) Book Review. In a Perfect Ocean: The state of fisheries and ecosystems in the North Atlantic Ocean. Reviews in Fish Biology and Fisheries.14: 149-151.
McIntire, M., L R Iwanowicz and A E Goodwin (2003) Molecular, physical and clinical evidence that Golden Shiner Virus (GSV) and Grass Carp Reovirus (GCRV) are variants of the same virus. Journal of Aquatic Animal Health. 15: 257-263.
Iwanowicz, L.R. and A E Goodwin (2002) Characterization of a new bacilliform fathead minnow rhabdovirus that produces syncytia in tissue culture. Archives of Virology 147: 889 – 916.
Iwanowicz, L.R. A E Goodwin and J Harshbarger (2001) Embryonal rhabdomyosarcoma of the giant gourami, Colisa fasciata (Bloch & Schneider). Journal of Fish Diseases 24:177-179
Iwanowicz, L.R. A E Goodwin and N Heil (2000) A small RNA virus isolated from apparently healthy wild sandbar shiners, Notropis scepticus. Journal of Fish Diseases 23: 349-352.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government