Livestock and Poultry Sciences Institute, USDA
Home Staff Annual Reports Links


PARASITE BIOLOGY AND EPIDEMIOLOGY LABORATORY


Mission: The mission of the Parasite Biology and Epidemiology Laboratory is to reduce the economic cost of parasitism in livestock and poultry and to reduce the risk of transmission of parasite zoonoses to humans. Emphasis is placed on developing integrated control programs for important parasitic diseases. Research includes basic and applied studies on (1) mechanisms of parasite transmission, the infection process, parasite development and parasite-host interactions; (2) the development of novel methods for parasite control such as parasite vaccines and non-chemical anti-parasitics; (3) the diagnosis and control of livestock parasites transmissible to humans; and (4) control of tick populations transmitting Lyme disease..


Dr. H. Ray Gamble
Research Leader
Supervisory Zoologist
Bldg. 1040, BARC-East
10300 Baltimore Avenue
Baltimore, MD 20705-2350
301/504-8300
email: rgamble@lpsi.barc.usda.gov

 

Studies the biology and epidemiology of zoonotic parasites of swine and the goal of defining production systems which reduce the risk of animal infection; develops tools to detect zoonotic parasite infection in swine; evaluates postharvest processes which inactivate zoonotic parasites in swine.


Dr. Patricia C. Allen
Research Chemist
Bldg. 1043, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8772
email: pallen@lpsi.barc.usda.gov

 

Studies biochemical, physiological, and immunological mechanisms for coccidia-induced metabolic changes in avian tissues which lead to nutrient malabsorption and reduced growth and weight gain. Investigates dietary modulations of coccidia infections. Develops methods for biological control of the black-legged tick, vector of Lyme disease.


Dr. Patricia C. Augustine
Microbiologist
Bldg. 1100, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8428
email: paugusti@lpsi.barc.usda.gov

 

Investigates mechanisms of cell invasion by sporozoites of avian coccidia. Studies effects of anticoccidial drugs and natural products on coccidiosis and turkey coccidia. Assesses impact of prior or concurrent infection on the behavior of the coccidia. Conducts basic research on Neospora.


Research Entomologist
Bldg. 1040, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/ 504-9017
email: sliddell@lpsi.barc.usda.gov

 

Investigates methods of suppressing populations of the black-legged tick (deer tick), vector of the pathogen causing Lyme disease. Studies host-finding behavior and ecology of the black-legged tick, as they relate to tick control.


Dr. Harry D. Danforth
Microbiologist
Bldg. 1100, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8427
email: hdanfort@lpsi.barc.usda.gov

 

Studies immunity to and control of avian coccidiosis. Initiates strategies to improve efficiency of live oocyst vaccines. Determines degree of anticoccidial efficacy against field isolates of coccidia. Isolates and characterizes coccidial antigens and evaluates their potential for use in vaccines. Uses hybridoma antibodies and electron microscopy to determine the interaction of coccidial antigens with the host immune system. Evaluates natural products for control of avian coccidiosis.


Dr. Jitender P. Dubey
Microbiologist
Bldg. 1001, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8128
email: jdubey@lpsi.barc.usda.gov

 

Develops procedures to render meat and meat products safe from Toxoplasma-infection through diagnosis, epidemiology and on-farm control programs. Develops a vaccine to prevent Toxoplasma-induced abortion in livestock. Develops methods for the diagnosis and control of Neospora in domestic animals.


Dr. Raymond H. Fetterer
Zoologist
Bldg. 1040, Rm. 206, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8762
email: rfettere@lpsi.barc.usda.gov

 

Conducts research on parasite physiology and biochemistry, particularly related to enzymes as targets for novel controls. Studies the impact of coccidia infections in chickens on muscle metabolism in order to develop new methods for assessing impact of treatments.


Dr. Dolores E. Hill
Research Parasitologist
Bldg. 1040, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8770
email: dhill@lpsi.barc.usda.gov

 

Conducts research on the molecular genetics of parasites of food animals using various biochemical methods including recombinant DNA techniques to identify and classify parasites and to develop diagnostic probes. Develops methods for the biological control of the black-legged tick, vector of Lyme disease.


Ms. Marcia L. Rhoads
Research Chemist
Bldg. 1040, Rm. 204, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8761
email: mrhoads@lpsi.barc.usda.gov

 

Studies biochemical, immunological and physiological functions, and developmental regulation of cuticular and secretory components of helminth parasites; purifies and characterizes enzymes and enzyme inhibitors; isolates antigens for immunization and diagnostic purposes.


Dr. John F. Carroll
Postdoctoral Research Associate
Bldg. 1040, BARC-East
10300 Baltimore Avenue
Beltsville, MD 20705-2350
301/504-8054
email: jcarroll@lpsi.barc.usda.gov

 

Develops serology-based and polymerase chain reaction-based diagnostic assays for Neospora caninum using molecular biological techniques.