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Commercial Fishers Gathering Important Data on Lake Superior Lake Sturgeon
Midwest Region, January 8, 2004
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A volunteer program utilizing commercial fishers on Lake Superior is allowing biologist to gather data on incidental catches in their trap and gill net sets. The Ashland Fishery Resources Office in Ashland, Wis., along with the Michigan Department of Natural Resources and the Bay Mills Indian Community, have been gathering biological information, including length, weight and girth measurements, genetic material supplied by a small fin clip for analysis and having the fishers tag the sturgeon with a numbered floy tag supplied by the agencies. Most of the fish the commercial fishers handle are immature fish, usually 18 ? 30?. Sturgeon of this size usually are not seen in the spawning runs in tributaries to Lake Superior, nor as juveniles in the tributaries. Data gathered in this life stage helps will hopefully help biologist better understand the needs and habitats that the sturgeon need. This is the third year that the Ashland FRO has been involved with this program.

2003 was a good year with the commercial fishers providing information on 25 lake sturgeon. The majority of these fish were caught in the Keweenaw Peninsula area in upper Michigan. Fisheries biologists hope to gain an insight into the movement of these fish and habitat being utilized in various lifestages. One lake sturgeon that was tagged in June of 2002 was recaptured in July of 2003. This sturgeon had covered over 170 miles of shoreline from where it was originally tagged! To date a total of 76 lake sturgeon have been handled by the commercial fishers on Lake Superior.

Along with the commercial fishers, there are four tribal natural resource departments that are also cooperating with the Ashland FRO and gathering this biological data and tagging sturgeon. They recorded a total of 12 sturgeon for 2003. Hopefully the data gathered from this study and others being conducted by natural resource agencies throughout Lake Superior can once again restore the current low numbers of this great fish to their historical numbers and home range they once had.

A copy of the 2001 ? 2002 Commercial Fishers Report for the Great Lakes can be viewed at: http://midwest.fws.gov/sturgeon/rpt-GLCommercial01-02.pdf

Contact Info: Midwest Region Public Affairs, 612-713-5313, charles_traxler@fws.gov



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