Mark S. Myers
Team Leader
Team Staff Directory
Research Publications
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The
Pathology Team is primarily responsible for
documenting the impacts of chemical contaminants and other environmental
stressors on organ structure and function in fish (and occasionally
marine mammal) species by using morphological research tools
such as histopathology and immunohistochemistry. Past research
has focused especially on the documentation of toxicopathic liver
lesions in wild fish populations and epizootiological studies
investigating the biological, biochemical, and chemical-exposure
related risk factors associated with occurrence of these lesions,
and various laboratory studies on chemical exposure and liver
carcinogenesis in fish. Field application of histopathology as
a research tool is currently used in broad-scale and regional
programs monitoring environmental quality, in Natural Resource
Damage Assessment (NRDA) cases, and monitoring of site remediation
and restoration efforts. More recently we have expanded our efforts
to providing histopathological diagnostic data for toxicopathic
and infectious diseases in juvenile chinook and coho salmon from
various estuaries in Oregon and Washington, as part of broader
studies assessing the impacts of natural and anthropogenic factors
on pathogen prevalence in juvenile salmon. Our group also provides
scientific support for studies in other programs in the Environmental
Conservation Division, and the Resource Enhancement and Utilization
Technologies Division, including histopathological assessment
of fish exposed to natural toxins and chemotherapeutic agents.
We also provide scientific support and consultations to researchers
from public agencies, private environmental consultants and universities
in the United States and throughout the world on issues relating
to fish diseases, toxicology, epizootiology, and histopathology.
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