EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/20/2019 | 3:15 PM - 3:30 PM | INGESTION OF MICROPLASTICS CAN INHIBIT FILTRATION RATES IN QUAGGA MUSSLES (DREISSENA BUGENSIS) | 251 AB
INGESTION OF MICROPLASTICS CAN INHIBIT FILTRATION RATES IN QUAGGA MUSSLES (DREISSENA BUGENSIS)
The impacts of microplastic particulates in freshwater organisms have been largely unexplored despite abundant plastic accumulation in these systems. We investigated the potential for ingestion of plastic particles by benthic filter feeding quagga mussles (Dreissena bugensis) and associated toxicity exhibited through impacts on mortality, filtration rate, reproduction and oxygen consumption. For this purpose, quagga mussels were exposed to four treatments ranging from 0.0- 0.8 g/L of a high density florescent red polyethylene powder in the size range of 10-45 ?m for 24 hours, and the targeted endpoints were quantified. Overall, results suggest rapid microplastic clearance from the water column by filtering, with ingestion, identified by several micrograms of microplastics in their digestive tract. Microplastics were also found in the gills. Correspondingly, filtration rate decreased at the higher concentrations tested. Despite large-scale ingestion, plastic exposure did not affect survivorship, reproduction rates or oxygen consumption. This research suggests that microplastics can impair feeding in filter feeding organisms, potentially resulting in a reduction of overall fitness over time due to a decrease in consumption associated with microplastic exposure. Further investigation into the effects of plastic exposure to freshwater organisms is warranted.
- Invasives
- Pollution
- Invertebrate
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Presenters/Authors
Donna Kashian
(), Wayne State University, dkashian@wayne.edu;
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Anna Boegehold
(), Wayne State University, az1079@wayne.edu;
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Kishore Gopalakrishnan
(), Wayne State University, kishore.gopalakrishnan@wayne.edu;
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Adam Pedersen
(), Wayne State University, adam.pedersen@wayne.edu;
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