Comparison of Whole and Sectioned Vertebrae for Determining the Age of Young Blue Shark (Prionace glauca)(Pdf - 0.2 MB)
Comparison of Whole and Sectioned Vertebrae for Determining the Age of Young Blue Shark (Prionace glauca)M. A. MacNeil and S. Campana
Department of Biology, Dalhousie University
Halifax, Nova Scotia, Canada B3H 3J5
Source - Journal of Northwest Atlantic
Fishery Science, Volume 30:77-82
ISSN-0250-6408
Age determinations using whole and sectioned vertebrae from 185 blue shark
(Prionace glauca) showed no systematic between-method difference in ages to a minimum age of 8 years. The precision measure, coefficient of variation, was good for both methods (CV <8%). While age validation is still required, digitally-enhanced images of whole vertebrae appear to be a rapid and cost effective means of age determination for blue shark below 300 cm (fork length) or approximately age 8.
Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - 2002
Publication Type - Journal Article
Descriptors - age-bias, age determination, precision,
Prionace glauca vertebrae