[All-postdocs] Bioseminar Jordan Pitt

[Ana M Velez]

Woods Hole Oceanographic Institution
Biology Department Seminar
Thursday, August 25, 2022 - 12:00 Noon

Jordan Pitt
PhD Candidate in Biological Oceanography, MIT/WHOI Joint Program

Implications of Exposure Route on the Bioaccumulation Potential of Nanoplastics
Microplastics and nanoplastics are found in marine biota across a wide range of trophic levels and environments. While a large portion of the information about plastic exposure comes from gastrointestinal (GI) data, the relevance of an oral exposure pathway compared with other potential pathways of exposure (e.g. dermal, respiratory) for accumulation of particles in other tissues is poorly understood. To address this gap in knowledge, larval zebrafish (7 days post fertilization) were exposed to nanoplastics (50 nm and 500 nm fluorescent polystyrene particles) through either oral gavage or a waterborne exposure. The oral gavage exposure limited potential accumulation to one uptake path while the waterborne exposure could lead to a combination of oral, dermal, and respiratory (gills) uptake. The larvae were then imaged at several timepoints to understand the dynamics of plastic distribution, sequestration, and elimination following a short-term exposure. I will discuss the results of this experiment, and the potential implications for the bioaccumulation potential of nanoplastics.

HYBRID! In person: Redfield Auditorium  Zoom: https://whoi-edu.zoom.us/j/94933576046 Meeting ID: 949 3357 6046    By dial: Find your local number: https://whoi-edu.zoom.us/u/awVe0Qbpv
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