SGSAD08.pdf (599.29 kB)
Report of the Study Group on Salmon Age Determination (SGSAD)
reportposted on 2008-01-01, 00:00 authored by ICESICES
The most important TOR’s in the Study Group on Salmon Age Determination [SGSAD] meeting in St. Petersburg concerned the use of otoliths in age determination and the results of the scale reading blind test that had been going on amongst SGSAD members during 2008. In a Swedish study on the usefulness of salmon otoliths, it was found that neither ground nor sawed otolith surfaces could be used in as accurate ageing of years as scales can be used in. The otolith surfaces were stained with neutral red. So far, it seems that salmon otoliths are useful in other kinds of studies such as the analysis of strontium‐calcium relationship, which is related to migration patterns of fish, even as early fry stages.