Abstract Title

Monitoring Cyanotoxin Production in the Western Basin of Lake Erie Using SPATT

Start Date

23-5-2022 5:45 PM

End Date

23-5-2022 7:00 PM

Abstract

The array of toxins and toxin concentrations produced by cyanobacteria in lakes may change on time scales that are too short to be adequately characterized by typical weekly water samples. We explored the use of Solid Phase Adsorption Toxin Tracking (SPATT) to provide a continuous profile of cyanobacterial toxin production in western Lake Erie. SPATT devices contain porous resin that passively adsorbs toxins over days or weeks potentially useful for detecting short-lived spikes in toxin levels, and unusual toxins and congeners. SPATT bags were deployed at two locations for durations of one and two weeks June-October, 2020. Grab samples for microcystin (MC) concentrations via ELISA and samples for qPCR analysis were collected weekly. SPATT bags were analyzed for 12 MC congeners, anatoxin-a (<0.11 ppb), and cylindrospermopsin.

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May 23rd, 5:45 PM May 23rd, 7:00 PM

Monitoring Cyanotoxin Production in the Western Basin of Lake Erie Using SPATT

The array of toxins and toxin concentrations produced by cyanobacteria in lakes may change on time scales that are too short to be adequately characterized by typical weekly water samples. We explored the use of Solid Phase Adsorption Toxin Tracking (SPATT) to provide a continuous profile of cyanobacterial toxin production in western Lake Erie. SPATT devices contain porous resin that passively adsorbs toxins over days or weeks potentially useful for detecting short-lived spikes in toxin levels, and unusual toxins and congeners. SPATT bags were deployed at two locations for durations of one and two weeks June-October, 2020. Grab samples for microcystin (MC) concentrations via ELISA and samples for qPCR analysis were collected weekly. SPATT bags were analyzed for 12 MC congeners, anatoxin-a (<0.11 ppb), and cylindrospermopsin.