Chronic toxicity test reveals hypoactivity in the estuarine zooplankton Americamysis bahia after exposure to micro and nanoplastics, indicating ecological risks.
Key Points
This study aims to assess the chronic effects of micro and nanoplastics on the zooplankton species Americamysis bahia.
Chronic toxicity test over 28 days using Americamysis bahia and various micro and nanoplastic types.
Exposure to tire particles, polylactic acid, and mixtures at three concentrations and weathering conditions.
Behavioral endpoints measured included total distance moved, velocity, freezing, and turn angle.
Significant hypoactivity observed in A. bahia across all MNP treatments compared to controls.
The PLA treatment showed the most instances of hypoactivity, indicating behavioral changes linked to bio-based plastics.
Weathered mixtures had the fewest negative effects, highlighting the importance of researching MNP interactions.