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Effects of Piscirickettsia infection on the muskellunge population of Lake St. Clair

Samples of fish and invertebrates were collected from Lake St. Clair   during 2  4, 2  5, and 2  6. The Piscirickettsia sp bacteria were   found in muskellunge and yellow perch by laboratory examination. The   bacteria were present in all of the muskellunge sent to the lab based  on electron microscopy and molecular analysis using the ribosomal   RNA gene sequences. Histopathological examination on the affected   muskellunge revealed severe degeneration of the kidney glomeruli and   widespread subcutaneous edema. Based on analysis of the gonads, there  were no indications that this bacterium is present. Isolation,   electron microscopy, and molecular evidence indicated that the Virus   Hemorrhagic Septicemia Virus (VHSV) genotype IV, sublineage b was   associated with an episode of muskellunge mortalities. The virus was   found in high titers in internal organs. The roles each of the VHSV   and Piscirickettsia has played in causing such mortalities remain to   be elucidated.    (Piscirickettsia); (bacteria); (Lake St. Clair); (VHS); (VHSv);   (viral hemorrhagic septicemia); (viral haemorrhagic septicaemia);   (viral hemmorrhagic septicemia)

In progress
Start Date
End Date
Michael ThomasPrincipal Investigator
Associated with 1 projects
Mohamed FaisalResearcher
Associated with 1 projects
Federal Sport Fish Restoration Act $ 50,000.00USDEstimates

Funding 1 projects for a total of $50,000.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Impact of Pollutants
Exotic Species
Resource Management
Lake Basin Connecting Channels
Lake St. Clair
State Province
Resource Being Monitored
Beneficial Use Impairment Assessments
Fish Tumours or Other Deformities
Loss of Fish and Wildlife Habitat
Tainting of Fish and Wildlife Populations
Biology And Life History
Parasites and Diseases
Annex Numbers
Research & Development
Annex 17
Impact of water quality and AIS on fish and wildlife populations and habitats
  • Annex Numbers
    Annex Numbers
    Research & Development
  • Annex 17
    Annex 17
    Impact of water quality and AIS on fish and wildlife populations and habitats

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