Monthly Archives: July 2011

Did she or didn’t she?

Posted on July 20, 2011 by Emily Pherigo

When the spring spawning migration finally ends and the tagged female is recaptured, all is not over.  The question on everyone’s mind is, “Did she spawn, or didn’t she?” Using a portable ultrasound unit similar to those used in modern … Continue reading →

Posted in Recapture, Reproductive Female, Uncategorized | Tagged , , |

It’s hard enough to catch a pallid sturgeon once, but twice?!

Posted on July 15, 2011 by Emily Pherigo

  Any fisherman will tell you that just knowing where a fish is located is not enough to catch it.  If it were, we would call it “catching” instead of “fishing.”   Recapturing telemetry tagged pallid sturgeon takes skill, experience, hard work, … Continue reading →

Posted in Methods, Recapture, Uncategorized |

Drift and retention of sturgeon larvae

Posted on July 8, 2011 by Kimberly Chojnacki

After sturgeon eggs hatch, the free-embryo larvae can drift as many as 17 days before “settling” into river habitats.  Previous analysis has indicated that if they drift at average water velocity in the river (4.5 – 7 miles per hour) … Continue reading →

Posted in Uncategorized |