Age validation of Dover sole (Microstomus pacificus) by means of bomb radiocarbon

Kastelle, Craig R. and Anderl, Delsa M. and Kimura, Daniel K. and Johnston, Chris G. (2008) Age validation of Dover sole (Microstomus pacificus) by means of bomb radiocarbon. Fishery Bulletin, 106(4), pp. 375-385.

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We used bomb radiocarbon (14C) in this age validation study of Dover sole (Microstomus pacificus). The otoliths of Dover sole, a commercially important fish in the North Pacific, are difficult to age and ages derived from the current break-andburn method were not previously validated. The otoliths used in this study were chosen on the basis of estimated birth year and for the ease of interpreting growth zone patterns. Otolith cores, material representing years 0 through 3, were isolated and analyzed for 14C. Additionally, a small number of otoliths with difficult-to-interpret growth patterns were analyzed for 14C to help determine age interpretation. The measured Dover sole 14C values in easier-to-interpret otoliths were compared with a 14C reference chronology for Pacific halibut (Hippoglossus stenolepis) in the North Pacific. We used an objective statistical analysis where sums of squared residuals between otolith 14C values of Dover sole and the reference chronology were examined. Our statistical analysis also included a procedure where the Dover sole 14C values were standardized to the reference chronology. These procedures allowed an evaluation of aging error. The 14C results indicated that the Dover sole age estimates from the easier-to-interpret otoliths with the break-and-burn method are accurate. This study validated Dover sole ages from 8 to 47 years.

Item Type: Article
Title: Age validation of Dover sole (Microstomus pacificus) by means of bomb radiocarbon
Personal Creator/Author:
Kastelle, Craig R.
Anderl, Delsa M.
Kimura, Daniel K.
Johnston, Chris G.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 106
Number: 4
Page Range: pp. 375-385
Date: 2008
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Item ID: 8819
Depositing User: Patti M. Marraro
Date Deposited: 12 Jun 2012 17:55
Last Modified: 12 Jun 2012 17:55

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