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New technology could answer lingering questions

Posted: January 28, 2014 - 7:53pm  |  Updated: January 29, 2014 - 8:40am

Dear Alaska Board of Fisheries,

It appears that we have very little information regarding where our Kenai River king salmon migrate to when leaving the river. This lack of information makes it is very difficult to understand what is killing them in the ocean. I requested that our ADF&G establish a juvenile king tagging program to study these migration routes but was informed that this kind of fish tagging technology does not exists.

An online search for this technology located archival fish tagging technology, which appears capable of the task. Star Oddi based in Gardabaer, Iceland is a company which has developed this technology. This tag uses the earth’s magnetic field, internal navigation along with longitude and latitude to plot fish migration routes worldwide. I request that the Alaska Board of Fisheries direct our ADF&G to investigate this technology and determine if it may be applied to track our king salmon?

When used on fish the tag can either be implanted or attached externally, for studying their habitat movements and migration routes.

Star Oddi is using DST magnetic and data logger sensors for industry research and monitoring. They appear to have an archival fish tag which can record the earth’s magnetic field strength data from a tag and then correlate it with our already charted earth magnetic field strength data thus giving a general location tracking history.

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tgray@desertstar.com
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tgray@desertstar.com 01/31/14 - 09:49 am
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Magnetic Tag

Hello Don,

The problem with the DST tag is that only stores the data; you have to physically recover it. That is quite a rare occurrence even on commercial fisheries.

Most customers will use a pop-up satellite tag and the only pop-up satellite tag that uses magnetics for positioning is the Desert Star SeaTag-GEO/PSAT or the SeaTag-MOD.

Thomas

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