Tag Archives: CSRP

Studies of Lake Sturgeon Free Embryo Dispersal Begin

By Aaron DeLonay and Kimberly Chojnacki How much river does a fish need?  For pallid sturgeon on the Missouri River there is a concern that there is not enough river for downstream-dispersing larvae.  Field-based and laboratory work at the Columbia Environmental … Continue reading

Posted in Early life history, Stream studies | Tagged , , , , |

What a Difference a Day Makes

By: Kimberly Chojnacki and Aaron DeLonay Scientists at the USGS, Columbia Environmental Research Center have initiated research that closely examines the differences in early life stages of three sturgeon species; lake sturgeon, pallid sturgeon, and shovelnose sturgeon.  On Wednesday, April … Continue reading

Posted in Early life history, Uncategorized | Tagged , , , , , |

The Sounds of Sturgeon Research

By Aaron DeLonay, Kimberly Chojnacki, and Casey Hickcox Recently, Comprehensive Sturgeon Research Project scientists documented a spawning event in the Yellowstone River when researchers followed a reproductive female sturgeon to a location where an aggregation of male sturgeon had been identified (See … Continue reading

Posted in Spawning, Technology, Telemetry tracking, Upper Missouri and Yellowstone Rivers | Tagged , , |

A Spawning Recorded in the Yellowstone River

By Patrick Braaten She was initially captured in September 1993, but at the time, the sex and reproductive status of the 1325 mm, 15.9 kg pallid sturgeon were not determined. She was implanted with a passive integrated transponder (PIT) tag … Continue reading

Posted in Recapture, Reproductive Female, Spawning, Telemetry tracking, Upper Missouri and Yellowstone Rivers | Tagged , , |

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 … Continue reading

Posted in Recapture, Reproductive Female, River Sweep | Tagged , , |

It’s more than just gravel and sand!

By Aaron Delonay, Robert Jacobson, and Casey Hickcox Scientists hypothesize that pallid sturgeon (Scaphirhynchus albus), like other sturgeon species, spawn over hard or coarse substrate such as bedrock, cobble or gravel. The type, size, or composition of coarse substrate that … Continue reading

Posted in Habitat mapping, Spawning | Tagged , , , |

Adult Reproductive Studies Benefit from Broodstock Collection Effort

Each spring biologists and volunteers from State and Federal agencies cooperate to collect adult pallid sturgeon from the Lower Missouri River for hatchery propagation.  Offices from the U.S. Fish and Wildlife Service, Missouri Department of Conservation, Nebraska Game and Parks … Continue reading

Posted in Telemetry tracking | Tagged , , |