Impact of nano- and micro-sized polystyrene beads on larval survival and growth of the Pacific oyster Crassostrea gigas.

Autor: Seong T; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan., Onizuka D; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan., Satuito G; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan., Kim HJ; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan. Electronic address: heejin@nagasaki-u.ac.jp.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2024 May 05; Vol. 469, pp. 133952. Date of Electronic Publication: 2024 Mar 02.
DOI: 10.1016/j.jhazmat.2024.133952
Abstrakt: This study successionally monitored how nano- and micro-sized polystyrene beads (MNPs) influence larval mortality, growth, and attachment behavior of the Pacific oyster Crassostrea gigas related to MNP diameter and concentration. D-shaped larvae were sequentially exposed to three-diameter MNPs (0.55, 3.00, 6.00 µm) at five concentrations (0, 0.1, 1.0, 10, 20 μg/mL), and their mortality, growth stages and attachment were observed daily until they die. In addition, MNP intake and accumulation in larvae at each growth stage were determined using fluorescent beads. Deterioration in larval growth and survival was observed under all the exposure conditions, while significant negative effects on the growth parameters were defined with smaller MNPs at lower concentrations. Fluorescent signals were detected in larval digestive tracts at all except D-shaped larval stage, and on the mantle and foot in pediveligers. Therefore, MNP intake adversely affects larval physiological conditions by the synchronal effects of MNP size and concentration. Our findings highlight the implications of MNP characteristics on Pacific oyster larvae, emphasizing the interplay between size, concentration, and physiological responses, crucial for mitigating nanoparticle pollution in marine ecosystems.
Competing Interests: Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Hee-Jin Kim reports financial support was provided by Environmental Restoration and Conservation Agency.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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