Skip to main content
ARS Home » Northeast Area » Leetown, West Virginia » Cool and Cold Water Aquaculture Research » People » Timothy Welch

Timothy Welch (Tim)

Research Microbiologist


11861 Leetown Road

Kearneysville, WV 25430

Voice: (304) 724-8340 x 2136


Professional Biographical Information:

B.S. in Biology (1989), University of California, San Diego

PhD. In Marine Biology (1996), Scripps Institution of Oceanography

Research Microbiologist (2003-present), USDA-ARS-NCCCWA

Research Assistant Professor (2002-3), Oregon Health Sciences University

Post-doc in the Laboratory of Dr. Jorge Crosa (1997-2002) OHSU

Research Rationale and Focus:

Infectious diseases are a major impediment to the U.S. aquaculture industry limiting production and decreasing production efficiency. A better understanding of the factors that contribute to infection, disease expression and pathogen persistence is critically needed and will provide practical information that will aid in the formulation of management strategies and therapeutentsto prevent disease outbreaks

Current research topics include:

1)    Molecular characterization of the emergence of vaccine resistance in Yersinia ruckeri.


2)    Development of the use of bacteriophage for the biocontrol of bacterial pathogens of cool- and cold-water fish species.


3)    Characterization of Antimicrobial plasmids that threaten drug use in aquaculture.