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Age Determination of Alaska Groundfish Species

The Alaska Fisheries Science Center Age and Growth Program published a practical guide to the age determination of key groundfish species from Alaskan waters.

Large fish on a table with ruler to show size

The Alaska Fisheries Science Center Age and Growth Program's guide to the age determination of key groundfish species from Alaskan waters describes techniques specific to the age determination of commercially and ecologically important species studied by the Program. The manual also provides general background information on otolith morphology, dissection, and preparation, as well as descriptions of methods used to measure the precision and accuracy of our age estimates.

Supplementary Material to the Age Determination Manual of the Alaska Fisheries Science Center Age and Growth Program

Additional information not published in NOAA Professional Paper 13 has been provided here in a web-based format. Most of the chapters listed below describe the age determination methods of non-commercial species or species for which age estimates have not been validated. This supplementary information also includes a description of our database and lists of supplies and references that may be useful to other age determination laboratories.

Due to the evolving nature of age determination science, some of the information presented here may change as new methodologies are developed over time. Furthermore, the Age and Growth Program is currently investigating the age determination of previously unstudied species, and as such it can be expected that new species chapters will be written in the future. Chapters which have been updated or added will be noted accordingly.

This presents supplemental material to "Age determination manual of the Alaska Fisheries Science Center Age and Growth Program," Mary Elizabeth Matta and Daniel K. Kimura (editors), which was published as NOAA Professional Paper NMFS 13 in 2012. Please note that this supplementary material did not undergo the formal peer-review process of the NMFS Scientific Publications Office but has been reviewed and approved by the Alaska Fisheries Science Center.

If citing this material, please use footnotes and the following format:

Author name(s). 2012. Chapter title. Resource Ecology and Fisheries Management Division, Alaska Fisheries Science Center, NMFS, NOAA, 7600 Sand Point Way NE, Seattle WA 98115.

Additional Resources

Resources

Map

Alaska Age And Growth Data Map

This interactive map displays collected specimen information from recent age and growth studies from Alaska Fisheries Science Center.

Document

Age Determination Manual of the Alaska Fisheries Science Center Age and Growth Program

At the NOAA Fisheries Alaska Fisheries Science Center (AFSC), fish age data, including catch-at-age data collected from commercial fisheries and…

Document

References for Age Determination and Otolith Research

Special Publications on Fish Age Determination and Otolith Symposia.