Jeffrey M Lorch
Jeff Lorch is a Microbiologist at the National Wildlife Health Center.
He received bachelor degrees in Bacteriology and Wildlife Ecology and a Ph.D. in Molecular and Environmental Toxicology from the University of Wisconsin – Madison. Since joining the USGS, Dr. Lorch has devoted his career to investigating and diagnosing wildlife mortality events and studying emerging wildlife diseases. Presently, his work focuses on disease ecology and management of bat white-nose syndrome and snake fungal disease, surveillance for Batrachochytrium salamandrivorans (the fungus that causes salamander chytridiomycosis), and development of molecular methods for detection of wildlife pathogens.
Professional Experience
2015 – Present, Microbiologist, National Wildlife Health Center
2012 – 2015, Research Associate, University of Wisconsin – Madison
Education and Certifications
Ph.D. Molecular and Environmental Toxicology, University of Wisconsin – Madison, 2012
B.S. Bacteriology, University of Wisconsin – Madison, 2005
B.S. Wildlife Ecology, University of Wisconsin – Madison, 2005
Affiliations and Memberships*
2015 – Present, Honorary Associate, Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin – Madison
Science and Products
Seasonal sex steroids indicate reproductive costs associated with snake fungal disease
Mortality of little brown bats (Myotis lucifugus carissima) naturally exposed to microcystin-LR
Patterns of circulating corticosterone in a population of rattlesnakes afflicted with snake fungal disease: Stress hormones as a potential mediator of seasonal cycles in disease severity and outcomes
Malassezia vespertilionis sp. nov.: A new cold-tolerant species of yeast isolated from bats
Phylogenetics of a fungal invasion: Origins and widespread dispersal of white-nose syndrome
Novel dermatophilosis and concurrent amyloidosis in Sanderlings (Calidris alba) from Louisiana, USA
Emerging fungal pathogen Ophidiomyces ophiodiicola in wild European snakes
Pathogenic lineage of Perkinsea associated with mass mortality of frogs across the United States
Host susceptibility to snake fungal disease is highly dispersed across phylogenetic and functional trait space
Snake fungal disease: An emerging threat to wild snakes
Detection of spring viraemia of carp virus in imported amphibians reveals an unanticipated foreign animal disease threat
First detection of bat white-nose syndrome in western North America
Non-USGS Publications**
**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.
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Filter Total Items: 66
Seasonal sex steroids indicate reproductive costs associated with snake fungal disease
Emergent diseases may result in population declines by inducing mortality directly or through sublethal effects on host reproduction. Snake fungal disease (SFD) is an emerging threat to biodiversity, but the sublethal impacts of disease on host fitness are poorly characterized in snakes. The cryptic nature of most snakes makes direct assessment of the fitness consequences of SFD challenging. In suAuthorsCraig M. Lind, Jeffrey M. Lorch, Ignacio T. Moore, Ben J. Vernasco, Terence M. FarrellMortality of little brown bats (Myotis lucifugus carissima) naturally exposed to microcystin-LR
We describe a die-off of little brown bats (Myotis lucifugus carissima) associated with acute intoxication with microcystin-LR in 2016 at Scofield Reservoir in Utah. High levels of this cyanotoxin in water from the reservoir and gastrointestinal content of bats supported this diagnosis.AuthorsMarcos Isidoro Ayza, Lee C. Jones, Robert J. Dusek, Jeffrey M. Lorch, Jan H. Landsberg, Patrick Wilson, Stephanie GrahamPatterns of circulating corticosterone in a population of rattlesnakes afflicted with snake fungal disease: Stress hormones as a potential mediator of seasonal cycles in disease severity and outcomes
Snake fungal disease (SFD) is an emerging threat to snake populations in the United States. Fungal pathogens are often associated with a physiological stress response mediated by the hypothalamo-pituitary-adrenal axis (HPA), and afflicted individuals may incur steep coping costs. The severity of SFD can vary seasonally; however, little is known regarding (1) how SFD infection relates to HPA activiAuthorsCraig M. Lind, Ignacio T. Moore, Çağlar Akçay, Ben J. Vernasco, Jeffrey M. Lorch, Terence M. FarrellMalassezia vespertilionis sp. nov.: A new cold-tolerant species of yeast isolated from bats
Malassezia is a genus of medically-important, lipid-dependent yeasts that live on the skin of warm-blooded animals. The 17 described species have been documented primarily on humans and domestic animals, but few studies have examined Malassezia species associated with more diverse host groups such as wildlife. While investigating the skin mycobiota of healthy bats, we isolated a Malassezia sp. thaAuthorsJeffrey M. Lorch, Jonathan M. Palmer, Karen J. Vanderwolf, Katie Z. Schmidt, Michelle L. Verant, Theodore J. Weller, David S. BlehertPhylogenetics of a fungal invasion: Origins and widespread dispersal of white-nose syndrome
Globalization has facilitated the worldwide movement and introduction of pathogens, but epizoological reconstructions of these invasions are often hindered by limited sampling and insufficient genetic resolution among isolates. Pseudogymnoascus destructans, a fungal pathogen causing the epizootic of white-nose syndrome in North American bats, has exhibited few genetic polymorphisms in previous stuAuthorsKevin P. Drees, Jeffrey M. Lorch, Sebastein J. Puechmaille, Katy L. Parise, Gudrun Wibbelt, Joseph R. Hoyt, Keping Sun, Ariunbold Jargalsaikhan, Munkhnast Dalannast, Jonathan M. Palmer, Daniel L. Linder, Marm Kilpatrick, Talima Pearson, Paul S. Keim, David S. Blehert, Jeffrey T. FosterNovel 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.AuthorsValerie I. Shearn-Bochsler, Jessica L. Schulz, Robert C. Dobbs, Jeffrey M. Lorch, J. Hardin Waddle, Daniel A. GrearEmerging fungal pathogen Ophidiomyces ophiodiicola in wild European snakes
Snake fungal disease (SFD) is an emerging disease of conservation concern in eastern North America. Ophidiomyces ophiodiicola, the causative agent of SFD, has been isolated from over 30 species of wild snakes from six families in North America. Whilst O. ophiodiicola has been isolated from captive snakes outside North America, the pathogen has not been reported from wild snakes elsewhere. We screeAuthorsLydia H. V. Franklinos, Jeffrey M. Lorch, Elizabeth A. Bohuski, Julia Rodriguez-Ramos Fernandez, Owen Wright, Liam Fitzpatrick, Silviu Petrovan, Chris Durrant, Chris Linton, Vojtech Baláž, Andrew A Cunningham, Becki LawsonPathogenic lineage of Perkinsea associated with mass mortality of frogs across the United States
Emerging infectious diseases such as chytridiomycosis and ranavirus infections are important contributors to the worldwide decline of amphibian populations. We reviewed data on 247 anuran mortality events in 43 States of the United States from 1999–2015. Our findings suggest that a severe infectious disease of tadpoles caused by a protist belonging to the phylum Perkinsea might represent the thirdAuthorsMarcos Isidoro Ayza, Jeffrey M. Lorch, Daniel A. Grear, Megan Winzeler, Daniel L. Calhoun, William J. BarichivichHost susceptibility to snake fungal disease is highly dispersed across phylogenetic and functional trait space
Emerging infectious diseases (EIDs) reduce host population sizes, cause extinction, disassemble communities, and have indirect negative effects on human well-being. Fungal EIDs have reduced population abundances in amphibians and bats across many species over large areas. The recent emergence of snake fungal disease (SFD) may have caused declines in some snake populations in the Eastern United StaAuthorsFrank T. Burbrink, Jeffrey M. Lorch, Karen R. LipsSnake fungal disease: An emerging threat to wild snakes
Since 2006, there has been a marked increase in the number of reports of severe and often fatal fungal skin infections in wild snakes in the eastern USA. The emerging condition, referred to as snake fungal disease (SFD), was initially documented in rattlesnakes, where the infections were believed to pose a risk to the viability of affected populations. The disease is caused byOphidiomyces ophiodiiAuthorsJeffrey M. Lorch, Susan Knowles, Julia S. Lankton, Kathy Michell, Jaime L. Edwards, Joshua M. Kapfer, Richard A. Staffen, Erik R. Wild, Katie Z. Schmidt, Anne Ballmann, Doug Blodgett, Terence M. Farrell, Brad M. Glorioso, Lisa A. Last, Steven J. Price, Krysten L. Schuler, Christopher Smith, James F. X. Wellehan, David S. BlehertDetection of spring viraemia of carp virus in imported amphibians reveals an unanticipated foreign animal disease threat
Global translocation of plants and animals is a well-recognized mechanism for introduction of pathogens into new regions. To mitigate this risk, various tools such as preshipment health certificates, quarantines, screening for specific disease agents and outright bans have been implemented. However, such measures only target known infectious agents and their hosts and may fail to prevent translocaAuthorsHon S. Ip, Jeffrey M. Lorch, David S. BlehertFirst detection of bat white-nose syndrome in western North America
White-nose syndrome (WNS) is an emerging fungal disease of bats caused by Pseudogymnoascus destructans. Since it was first detected near Albany, NY, in 2006, the fungus has spread across eastern North America, killing unprecedented numbers of hibernating bats. The devastating impacts of WNS on Nearctic bat species are attributed to the likely introduction of P. destructans from Eurasia to naive hoAuthorsJeffrey M. Lorch, Jonathan M. Palmer, Daniel L. Lindner, Anne Ballmann, Kyle George, Kathryn M. Griffin, Susan Knowles, John R. Huckabee, Katherine H. Haman, Christopher D. Anderson, Penny A. Becker, Joseph B. Buchanan, Jeffrey T. Foster, David S. BlehertNon-USGS Publications**
Kapfer, J.M., Sloss, B.L., Schuurman, G.W., Paloski, R.A., and Lorch, J.M. 2013. Evidence of hybridization between common gartersnakes (Thamnophis sirtalis) and Butler's gartersnake (Thamnophis butleri) in Wisconsin (USA). Journal of Herpetology 47:400-405.**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.
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