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Project Information

Title: Effect of Disease on Pacific Herring Population Recovery in PWS

Project Year and Number: 2003: 030462

Other Fiscal Years and Numbers for this Project: 2002: 02462-CLO, 2001: 01462-CLO, 2000: 00462, 1999: 99462

Principal Investigator (PI): Gary Marty, BC Ministry of Agriculture and Lands

Assisting Personnel: None

Research Location: Prince William Sound

Restoration Category: Research

Injured Resources Addressed: Commercial Fishing , Pacific Herring , Subsistence

Abstract: In spring 2001, prevalence of Ichthyophonus hoferi (38 percent) in the Pacific herring population of Prince William Sound was more than 50 percent greater than in any year studied (1989-2000). I. hoferi causes severe, disseminated, chronic disease in Pacific herring that is best diagnosed using histopathology. Before 2001, I. hoferi was not associated with unexpected declines in population biomass. But during the last century, increases in I. hoferi prevalence in Atlantic herring have been associated with several disease outbreaks. To understand the significance of the 2001 I. hoferi outbreak, this project will analyze samples already collected in fall 2001 and spring 2002 as part of Project 02462.


Geographic Regions Prince William Sound
Species Fish - Herring
Fields of Expertise Commercial fisheries
Management & Policy
Population Biology
Recreational fisheries
Subsistence fisheries
Technological Methods Modeling
Professional Activity Field research and Data Collection
Ecosystems Marine – Pelagic
Species Specific Research Issues Fish - Disease
Fish - Population dynamics

Proposal: View PDF (164 KB)

Funding Recommendations: View

Funding Detail For: 2003

Quarterly Project Tasks For: 2003

Annual Report: 2003: Not Available

Final Report: View

Publications from this Project: None Available

More information may be available for this project under other years:

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Project Number Proposal Annual Reports Final Report Data
2002: 02462-CLO View (PDF) 2002: Not Available
See Project 030462 See Project 030462
2001: 01462-CLO View (PDF) 2001: View (PDF)
See Project 030462 See Project 030462
2000: 00462 Not Available 2000: View (PDF)
See Project 030462 See Project 030462
1999: 99462 Not Available 1999: View (PDF)
See Project 030462 See Project 030462