Spawning Sturgeon, Wolf River, Wis.

Sturgeon spawning is a yearly event triggered by water temperature—about 54 degrees Fahrenheit—and it in turn triggers a migration of spectators, researchers, wardens, and volunteer guards. They gather on the banks of Wisconsin's Wolf River and its tributaries where the fish journey to spawn on the rocky banks from where they themselves hatched years before. Its truly a sight to behold, and parents and grandparents bring children of all ages to witness the event, flocking to viewing areas constructed just for that purpose. Many of the fish are older than the parents, and some are contemporaries of the grandparents. All of the sturgeon look like the ancient creatures they are—nearly unchanged for one hundred fifty million years.

For more information about Winnebago sturgeon spawning, see http://dnr.wi.gov/fish/sturgeon/sturgeon_spawning.html

For more information about the book People of the Sturgeon: Wisconsin's Love Affair with an Ancient Fish, a book sponsored by the University of Wisconsin Sea Grant Institute, see www.winnebagosturgeon.org

To order the book, please see:
http://aqua.wisc.edu/publications

http://www.wisconsinhistory.org/whspress/books/book.asp?book_id=343

This video is from 2008.

Category:

Science & Technology

Tags:

• Spawning
• sturgeon
• stock
• 2008
• Shiocton
• tagging
• recording
• measuring
• caviar

[UWASC]

Those are called “PIT tags.” PIT tags are similar to the electronic chips that veterinarians implant in dogs and cats to help identify them in case they get lost. Here, the tag carries a unique number to identify that particular fish. The DNR use the PIT tags to track the growth and whereabouts of that particular sturgeon.

--Adapted from “People of the Sturgeon,” by K. Kline, F. Binkowski, and R. Bruch.

[KellyThundercloud]

What on earth are they injecting into those fish at the end of the video?!!