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Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 19, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

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Tuesday, January 29 • 2:00pm - 2:20pm
(SYMPOSIA-07) Lake Sturgeon Movements in the Missouri River Basin Call Attention to the Importance of Tributaries in Large River Fish Conservation

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AUTHORS: Michael Moore, Craig Paukert – University of Missouri Cooperative Fish and Wildlife Research Unit

ABSTRACT: Large river tributaries often provide spawning and nursery habitat for large river fishes and may be less altered than the mainstem large rivers.  We used telemetry to identify tributary use and habitat selection of Lake Sturgeon, a threatened species, in the Osage and Gasconade rivers, two tributaries of the Missouri River in Missouri USA near the southern edge of their range. We implanted 96 Lake Sturgeon with acoustic transmitters in the Osage and Gasconade Rivers from 2015 to 2018 and relocated fish by remote receivers in the tributaries and mainstem Missouri River and monthly manual tracking. Ninety Lake Sturgeon have spent 75% of their time in tributaries. However, 20 fish have not been detected for up to 10 months, suggesting they may leave the tributaries for extended periods.  Bayesian discrete choice models determined that Lake Sturgeon selected deeper habitats across all seasons. Lake Sturgeon also selected habitats closer to the main channel in all seasons except spring when they moved closer to the bank in faster flows. Lake Sturgeon did not select habitats based on substrate composition or cover. This information may help inform river conservation and the consideration of tributaries into conservation strategies for large river fishes. 

Tuesday January 29, 2019 2:00pm - 2:20pm
HOPE BALLROOM A

Attendees (1)