Chemical effects of different types of rubber-based products on early life stages of Pacific oyster, Crassostrea gigas

Type Article
Date 2022-04
Language English
Author(s) Tallec Kevin1, Huvet ArnaudORCID1, Yeuc'h Valérie2, Le Goic Nelly3, Paul-Pont Ika3
Affiliation(s) 1 : Univ Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
2 : LABOCEA, 120 avenue de Rochon, CS10052, 29280 Plouzané, France
3 : Univ Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
Source Journal Of Hazardous Materials (0304-3894) (Elsevier BV), 2022-04 , Vol. 427 , P. 127883 (12p.)
DOI 10.1016/j.jhazmat.2021.127883
WOS© Times Cited 8
Keyword(s) Oyster, Rubber, Tire, Aquaculture gears, Leachate, Early life stages

Rubber products and debris with specific chemical signatures can release their constitutive compounds into the surrounding environment. We investigated the chemical toxicity of different types of new and used rubber products (tires, crumb rubber granulates, aquaculture rubber bands) on early life stages of a model marine organism, Pacific oyster Crassostrea gigas. Leachates obtained from used products were generally less toxic than those from new ones. Leachates from new products induced embryotoxicity at different concentrations: oyster-farming rubber bands (lowest observed effect concentration, LOEC = 1 g L-1) and crumb rubber granulates (LOEC = 1 g L-1) > tires (LOEC = 10 g L-1). Moreover, new oyster-farming rubber bands induced spermiotoxicity at 10 g L-1 (-29% survival) resulting in decreased oyster reproductive output (-17% fertilization yield). Targeted chemical analyses revealed some compounds (2 mineral contaminants, 15 PAHs, 2 PCBs) in leachates, which may have played a role. Rubber used in marine aquaculture (rubber bands) or present at sea as waste (tire, crumb rubber granulates) therefore release hazardous chemical molecules under realistic conditions, which may affect oyster development. Aquaculture development work is necessary to improve practices for eco-safety, as are efforts to limit the contamination of marine environments by terrestrial rubber debris.

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