Daniel A Grear
Dan Grear is a Wildlife Disease Ecologist at the National Wildlife Health Center.
I am interested in mechanisms that cause heterogeneities in pathogen transmission in wild animal disease systems and at the interface of wildlife, domestic animal, and human health. I lead investigations into wildlife mortality events and research that incorporates field studies with theoretical modeling of disease systems to identify key mechanisms that drive transmission dynamic.
Professional Experience
2015 - Present Wildlife Disease Ecologist, U.S. Geological Survey, National Wildlife Health Center, Madison, WI
2013 - 2015 Ecologist, U.S. Department of Agriculture, Veterinary Services, Center for Epidemiology and Animal Health, Fort Collins, CO
2011 - 2014 Post-Doctoral Researcher, Colorado State University
Education and Certifications
2011 Ph.D. Ecology, Pennsylvania State University
2006 M.S. Wildlife Ecology, University of Wisconsin
2002 B.S. Wildlife Ecology, University of Wisconsin
Affiliations and Memberships*
Member of the Ecological Society of America
Member of the Wildlife Society
Bsal Task Force Working Group Member
Science and Products
Acute mortality in California tiger salamander (Ambystoma californiense) and Santa Cruz long-toed salamander (Ambystoma macrodactylum croceum) caused by Ribeiroia ondatrae (Class: Trematoda)
Highly pathogenic avian influenza virus H5N2 (Clade 2.3.4.4) challenge of mallards age appropriate to the 2015 midwestern poultry outbreak
Evaluation of regulatory action and surveillance as preventive risk-mitigation to an emerging global amphibian pathogen Batrachochytrium salamandrivorans (Bsal)
Quarterly wildlife mortality report January 2021
Quarterly wildlife mortality report October 2020
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
Avian influenza virus prevalence in marine birds is dependent on ocean temperatures
The ecology of chronic wasting disease in wildlife
Quarterly wildlife mortality report April 2019
Mortality due to Tyzzer's disease of muskrats in northern Ohio, USA
Pathology and case definition of Severe Perkinsea Infections of frogs
Identifying management-relevant research priorities for responding to disease-associated amphibian declines
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.
Evaluating regulations and surveillance as risk-mitigation to the emerging amphibian pathogen Bsal- Data release
Data from a national survey for the amphibian chytrid fungus Batrachochytrium salamandrivorans (ver. 2.0, Nov 2024)
Pathology and bacteriology of 178 tadpoles with histologically confirmed Severe Perkinsea Infections: Data
Pathogenic lineage of Perkinsea causes mass mortality of frogs across the USA: Data
Science and Products
Acute mortality in California tiger salamander (Ambystoma californiense) and Santa Cruz long-toed salamander (Ambystoma macrodactylum croceum) caused by Ribeiroia ondatrae (Class: Trematoda)
Highly pathogenic avian influenza virus H5N2 (Clade 2.3.4.4) challenge of mallards age appropriate to the 2015 midwestern poultry outbreak
Evaluation of regulatory action and surveillance as preventive risk-mitigation to an emerging global amphibian pathogen Batrachochytrium salamandrivorans (Bsal)
Quarterly wildlife mortality report January 2021
Quarterly wildlife mortality report October 2020
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
Avian influenza virus prevalence in marine birds is dependent on ocean temperatures
The ecology of chronic wasting disease in wildlife
Quarterly wildlife mortality report April 2019
Mortality due to Tyzzer's disease of muskrats in northern Ohio, USA
Pathology and case definition of Severe Perkinsea Infections of frogs
Identifying management-relevant research priorities for responding to disease-associated amphibian declines
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.
Evaluating regulations and surveillance as risk-mitigation to the emerging amphibian pathogen Bsal- Data release
Data from a national survey for the amphibian chytrid fungus Batrachochytrium salamandrivorans (ver. 2.0, Nov 2024)
Pathology and bacteriology of 178 tadpoles with histologically confirmed Severe Perkinsea Infections: Data
Pathogenic lineage of Perkinsea causes mass mortality of frogs across the USA: Data
*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