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Tuesday, January 30 • 6:00pm - 9:00pm
Poster Display. Flood Level Impact on Channel Catfish Hatch Success in the Wabash River

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AUTHORS: Kaleb Wood, Eric Hine, Cassi Moody-Carpenter, Robert E. Colombo - Eastern Illinois University

ABSTRACT: On an annual basis, the Wabash River experiences highly variable water levels from March to July, which overlaps the typical timeframe for Channel Catfish (Ictalurus punctatus) reproduction in midwestern lotic systems. Beginning in 2013, an electrified trawl modeled after Freedman et al.’s methods was used to sample larval Channel Catfish (total length = 90 mm) 10 reaches of the Wabash; CPUE was calculated from this data for all years and months sampled. Annual and monthly average discharge rates (cubic feet/second) were calculated using NOAA’s historical river gauge data collected at the gauge in Mt. Carmel, IL. Annual average discharge was compared with a One-Way ANOVA, followed by a Tukey post-hoc analysis, and showed us the discharge during the years 2015 and 2017 were significantly different than all other sample years (p = .05). Comparing our annual CPUE , a One-Way ANOVA, followed by a Tukey post-hoc analysis, yielded no significant differences between any years sampled (p = .05). Comparing monthly CPUE with the same analysis as annual CPUE, July is the only month sampled that shows a significant difference compared to all other months throughout all sample years (p = .05). Our results currently show no apparent connection between discharge and production of young of the year Channel Catfish in the Wabash River, but data will continue to be collected to add more sample years; it is worth noting the increased July CPUE could assist in future research about Channel Catfish spawning habits in lotic systems.

Tuesday January 30, 2018 6:00pm - 9:00pm CST
Ballroom C & Foyer

Attendees (3)