Loading…
This event has ended. View the official site or create your own event → Check it out
This event has ended. Create your own
To return to the Midwest Fish & Wildlife Conference website, go to http://www.midwestfw.org/ The following schedule and room names are subject to change (as of February 1, 2017). Please check back for updates. 

Presenters: 
Presenters for technical presentations are either the primary author (the first name listed in the abstract), or are indicated with an asterisk next to their name. 

Please note:
 the conference schedule is hosted by Sched.org which allows you to search within the schedule, and filter the schedule to show sessions only occurring on a certain date or within a track. You can also build your own schedule by creating a free account with Sched.org by selecting "SIGN UP" in the top right corner. 
View analytic
Monday, February 6 • 2:20pm - 2:40pm
Symposia Session - S1: Midwestern Reservoir Management and Assessment Strategies. Low-dose Rotenone Applications to Improve Recreational Fisheries

Sign up or log in to save this to your schedule and see who's attending!

AUTHORS: Tony J Barada, Jeff Jackson, Aaron Blank, Jordan Katt - Nebraska Game and Parks Commission

ABSTRACT: Gizzard shad in small water bodies are known to compete with sportfish, often limiting growth potential and size structure of fishes commonly sought by anglers.  However, gizzard shad populations are dynamic in nature and can be difficult to manage.  Previous research has shown that gizzard shad have a low lethal tolerance to rotenone, and applying very low doses (approx. 5% of normal renovation applications) targeting gizzard shad may be a valuable tool for improving a fishery without having to conduct a complete renovation. 
Low-dose rotenone applications were conducted at two waterbodies in southeast Nebraska during the fall of 2013.  One application was conducted on an 18-acre sand pit lake, while a large-scale application was conducted at a 740-acre flood control reservoir.  Fish communities differed between the two water bodies, however the goal of improving each recreational fishery was similar. 
Multiple years of standard surveys (trap netting, gill netting, electrofishing) were conducted pre- and post-application at each waterbody.  Surveys indicated gizzard shad were successfully eradicated from both water bodies one year after application.  However, gizzard shad were detected in the flood control reservoir in year two.  Common fisheries demographics (relative abundance, size structure, condition, growth) of sportfish will be compared and presented to demonstrate the utility of low-dose rotenone applications as a fisheries management tool.

Monday February 6, 2017 2:20pm - 2:40pm
Garrat

Attendees (20)