July River Sweep

By Kimberly Chojnacki and Aaron DeLonay

The researchers of the Comprehensive Sturgeon Research Project (CSRP) have defined a “river sweep” as an attempt to search for telemetered pallid sturgeon in as much of the Lower Missouri River (from the Gavins Point Dam near Yankton, South Dakota to the confluence near St. Louis, Missouri) as possible. CSRP researchers teamed up with collaborators at the Nebraska Game and Parks Commission (NGPC) during late-July to search approximately 560 river miles of the Lower Missouri River (figure 1). Forty telemetered pallid sturgeon were located during this river sweep effort, including two females (PLS10-029 and PLS12-002), and one male (PLS10-032) that were in reproductive condition during the spring of 2014 (see previous post “A Kettle of Fish”). Researchers will now focus on recapturing telemetered fish that need new telemetry transmitters or a reproductive evaluation (especially those fish there were in reproductive condition during the spring spawning season).

A map showing the location of the CSRP River Sweep in mid-July.

Figure 1. Map showing search effort and pallid sturgeon telemetry locations during the river sweep from July 15-23, 2014.

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