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Project Information

Title: Using Otolith Chemistry to Discriminate Pacific Herring Stocks in AK

Project Year and Number: 2007: 070769

Other Fiscal Years and Numbers for this Project: 2007: 050769, 2006: 050769, 2005: 050769

Principal Investigator (PI): Ted Otis, Alaska Department of Fish & Game

Assisting Personnel: None

Project Website: http://www.herringstockid.info

Research Location: Gulf of Alaska

Restoration Category: Research

Injured Resources Addressed: Pacific Herring

Abstract: This proposal is an extension of EVOS Project 050769, which is currently assessing the temporal stability of stock discrimination criteria derived from fatty acid analysis (FAA) of herring cardiac tissues. In 2006, Otis (050769) collected heads from fish sampled for FAA so chemical analysis of the otoliths could be conducted to evaluate which technique was most effective for determining herring stock structure at fine spatial scales. In this study, Dr. Nate Bickford (EVOS Project 060782) will process those samples using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to determine whether otolith chemistry can be used to corroborate FAA techniques for determining fine scale structuring within and among Alaska’s herring stocks (e.g., Sitka, PWS, Kamishak, Kodiak, Dutch Harbor, Togiak, and Kuskokwim Bay). Results will be published and should allow researchers to better define ecologically significant stock boundaries, likely affecting how commercially exploited herring populations are assessed and managed.


Keywords

Geographic Regions Bering Sea
Bristol Bay
Cook Inlet
Gulf of Alaska
Kodiak Island
Prince William Sound
Southeast Alaska
Species Fish - Herring
Humans
Fields of Expertise Biochemistry
Chemistry
Commercial fisheries
Ecology
Genetics
Management & Policy
Resource Management
Subsistence fisheries
Technological Methods Modeling
Spectrometry
Professional Activity Fishery management
Ecosystems Marine – Nearshore
Species Specific Research Issues Fish - Genetics and stock identification

Proposal: View PDF (333 KB)

Funding Recommendations: View

Funding Detail For: 2007

Quarterly Project Tasks For: 2007

Annual Report: 2007: View (23 KB)

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
2007: 050769 View (PDF) 2007: Not Applicable
2006: View (PDF)
2005: View (PDF)
See Project 070769 See Project 070769