Tire rubber chemicals reduce juvenile oyster (Crassostrea gigas) filtration and respiration under experimental conditions

Type Article
Date 2022-08
Language English
Author(s) Tallec Kevin1, Gabriele Marta2, Paul-Pont Ika3, Alunno Bruscia MarianneORCID1, Huvet ArnaudORCID1
Affiliation(s) 1 : Univ Brest, Ifremer, CNRS, IRD, LEMAR, F-29280 Plouzané, France
2 : Università di Pisa, Lungarno Pacinotti 43, 56126 Pisa, Italy
3 : Univ Brest, Ifremer, CNRS, IRD, LEMAR, F-29280 Plouzané, France
Source Marine Pollution Bulletin (0025-326X) (Elsevier BV), 2022-08 , Vol. 181 , P. 113936 (7p.)
DOI 10.1016/j.marpolbul.2022.113936
WOS© Times Cited 1
Keyword(s) Oyster, Tire leachates, Ecophysiology, Scope for growth
Abstract

Tires can release a large number of chemical compounds that are potentially hazardous for aquatic organisms. An ecophysiological system was used to do high-frequency monitoring of individual clearance, respiration rates, and absorption efficiency of juvenile oysters (8 months old) gradually exposed to four concentrations of tire leachates (equivalent masses: 0, 1, 10, and 100 μg tire mL−1). Leachates significantly reduced clearance (52 %) and respiration (16 %) rates from 1 μg mL−1, while no effect was observed on the absorption efficiency. These results suggest that tire leachates affect oyster gills, which are the organ of respiration and food retention as well as the first barrier against contaminants. Calculations of scope for growth suggested a disruption of the energy balance with a significant reduction of 57 %. Because energy balance directs whole-organism functions (e.g., growth, reproductive outputs), the present study calls for an investigation of the long-term consequences of chemicals released by tires.

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