Summary of Data Collected During Field Efficacy Trials of Florfenicol and Oxytetracycline Dihydrate in Controlling Mortality in Walleye (Sander vitreus) Because of Motile Aeromonad Infections

Open-File Report 2023-1056
By: , and 

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Abstract

Motile Aeromonad septicemia is a substantial concern during fish propagation and can be catastrophic for fish hatcheries. We tested the efficacy of two different drugs (florfenicol and oxytetracycline) offered with feed as possible treatment options to control mortality because of motile Aeromonad infection. We offered top-coated medicated feeds to hatchery-reared Sander vitreus (walleye) that were naturally infected with motile Aeromonad infection during two separate trials in 2011 and 2012. Substantial walleye mortality occurred before positive clinical outcomes from the medicated feed treatments were observed, and additional treatment measures were taken by hatchery staff to mitigate further mortality in their walleye production tanks. This report summarizes the data that were collected during medicated feed trials. Statistical inferences on treatment efficacy are not included because of the confounding treatments and possible secondary pathogens present throughout this study.

Suggested Citation

Merkes, C.M., Tuttle-Lau, M.T., Schleis, S.M., and Cupp, A.R., 2024, Summary of data collected during field efficacy trials of florfenicol and oxytetracycline dihydrate in controlling mortality in walleye (Sander vitreus) because of motile Aeromonad infections: U.S. Geological Survey Open-File Report 2023–1056, 19 p., https://doi.org/10.3133/ofr20231056.

ISSN: 2331-1258 (online)

Publication type Report
Publication Subtype USGS Numbered Series
Title Summary of data collected during field efficacy trials of florfenicol and oxytetracycline dihydrate in controlling mortality in walleye (Sander vitreus) because of motile Aeromonad infections
Series title Open-File Report
Series number 2023-1056
DOI 10.3133/ofr20231056
Year Published 2024
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Upper Midwest Environmental Sciences Center
Description Report: vii, 19 p.; Appendix; Data Release
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page
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