EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/27/2021 | 2:00 PM - 3:30 PM | THE IMPACT OF CYANOBACTERIA ON TWO POPULATIONS OF QUAGGA MUSSELS | Virtual Platform
THE IMPACT OF CYANOBACTERIA ON TWO POPULATIONS OF QUAGGA MUSSELS
Quagga mussels (Dreissena bugensis) first invaded the Great Lakes region of North America in the 1980’s and more recently the western United States. This project investigates how separate populations of mussels respond to environmental stressors and if they are genetically distinct. Mussels were collected from the Detroit River, MI and Lake Mohave, NV. Experiments compared mussel spawning between the two populations when exposed to cyanobacteria: (Aphanizomenon flos-aquae, Planktothrix suspensa, Anabaena flos-aquae, Microcystis wesenbergii). Cyanobacteria was diluted into three concentrations: 550, 340, 130, 0 µg/L chlorophyll-a. The two populations of mussels responded with a similar reduction in spawning when exposed to 550 µg/L A. flos-aquae (p<0.001). Oxidative stress analysis was performed with concentrated microcystin-LR (MCLR) over 72 hours at 400, 100, and 0 µg/L. Peak oxidative stress occurred at the highest concentration of MCLR at 42 hours. For the genetic comparison, DNA was extracted with DNAzol Direct from 5 Mojave Lake and 5 Detroit River quagga mussels. COI sequencing indicated both mussel populations had the same quagga haplotypes. Understanding differential responses among quagga mussel populations to stressors such as cyanobacterial blooms is critical for management efforts.
- Contaminants
- Biological interactions
- Biological effects
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Presenters/Authors
Katrina Lewandowski
(), Wayne State University, lewandowskikatrina@gmail.com;
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Kishore Gopalakrishnan
(), Wayne State University, kishore.gopalakrishnan@wayne.edu;
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Jeffrey Ram
(), Department of Physiology, Wayne State University, jeffram@wayne.edu;
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Donna Kashian
(), Wayne State University, dkashian@wayne.edu;
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