International Workshops Addressing the Age Determination
of Walleye Pollock (Theragra chalcogramma)
Two international workshops
have been held in an attempt to reach consensus on the best method to age
walleye pollock. The first workshop was held in Gdynia, Poland, in
1990 and concluded: "The participants at this workshop unanimously agreed that
under our present knowledge that the break and burn method provides the best
method for ageing walleye pollock."
The second meeting held in Seattle, Washington, in
1998 was held under the auspices of the Parties to the Convention on the
Conservation of the Pollock Resources in the Central Bering Sea. Both
workshops involved fairly extensive exchanges of samples aged by participating
countries. Results from these exchanges indicate ages from broken and burnt
otoliths appeared similar even when nations possessed various levels of
expertise and very little previous calibration occurred.
Click on the links below for a full report.
-
Gdynia, Poland (1990) PDF file - 750KB
-
Seattle, Washington (1998) PDF file - 1.25MB |
