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"Age and Growth Program"

Age and Growth Program Results

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Flathead Sole Age and Growth Research

* The information in this document has not been subjected to formal peer review. Please use footnotes and the following format when citing this document: Matta, M. E., and D. M. Anderl. 2012. Flathead sole (Hippoglossoides elassodon). Resource Ecology and Fisheries Management Division, Alaska Fisheries Science Center, NMFS, NOAA, 7600 Sand Point Way NE, Seattle WA 98115.
Alaska

Alaska Plaice (Pleuronectes Quadrituberculatus) Age and Growth Research

* The information in this document has not been subjected to formal peer review. Please use footnotes and the following format when citing this document: Matta, M. E. 2012. Alaska plaice (Pleuronectes quadrituberculatus). Resource Ecology and Fisheries Management Division, Alaska Fisheries Science Center, NMFS, NOAA, 7600 Sand Point Way NE, Seattle WA 98115.
Alaska

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.
Alaska
Large fish on a table with ruler to show size

Pacific Cod: The Ageing of a Difficult Species

Historically, fish scales and otoliths have been the two most common structures used for determining the ages of fish species. Unfortunately, age-readers employing these structures have experienced limited success in the case of Pacific cod.
Alaska

Radiometric Fish Age Validation

Research with Otoliths.
Alaska

Otolith Growth Validation And Corroboration

Research with Otoliths.
Alaska

Determining Age and Growth Through Bomb Radiocarbon Age Validation

Research with Otoliths.
Alaska

Determining Age and Growth Through Stable Isotopes

Age and growth research with otoliths and oxygen isotopes.
Alaska

Age and Growth Fish Otolith Thin Sectioning Procedures

Thin sectioning is used to supplement the break and burn method in the age determination of rockfish species and other difficult to age species. The AFSC thin section method is a modified version of a similar thin section technique developed in Australia. The modified thin section was used to develop the ageing criteria for shortraker rockfish and Pacific cod and is currently the primary method used to age shortraker rockfish. Below is a brief description of the procedure along with accompanying photographs.
Alaska

Alaska Age and Growth Procedures for Otolith Examination

Learn more about the break-and-burn procedure for studying age and growth of otoliths.
Alaska