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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Human Health Effects Marine & Wildlife Nanoplastics Remediation Reproductive & Development Sign in to save

Nanopolystyrene beads affect motility and reproductive success of oyster spermatozoa (<i>Crassostrea gigas</i>)

Nanotoxicology 2020 45 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Ika Paul-Pont, Arnaud Huvet Kévin Tallec, Kévin Tallec, Kévin Tallec, Kévin Tallec, Carmen González-Fernández, Kévin Tallec, Carmen González-Fernández, Ika Paul-Pont, Carmen González-Fernández, Carmen González-Fernández, Carmen González-Fernández, Ika Paul-Pont, Arnaud Huvet Kévin Tallec, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Philippe Soudant, Anne-Laure Cassone, Fabienne Le Grand, Ika Paul-Pont, Anne-Laure Cassone, Kévin Tallec, Kévin Tallec, Kévin Tallec, Carmen González-Fernández, Ika Paul-Pont, Arnaud Huvet Carmen González-Fernández, Ika Paul-Pont, Kévin Tallec, Ika Paul-Pont, Ika Paul-Pont, Carmen González-Fernández, Kévin Tallec, Kévin Tallec, Carmen González-Fernández, Arnaud Huvet Arnaud Huvet Nelly Le Goïc, Anne-Laure Cassone, Anne-Laure Cassone, Anne-Laure Cassone, Antoine Bideau, Nelly Le Goïc, Myrina Boulais, Myrina Boulais, Anne-Laure Cassone, Anne-Laure Cassone, Christophe Lambert, Anne-Laure Cassone, Christophe Lambert, Christophe Lambert, Philippe Soudant, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Carmen González-Fernández, Christophe Lambert, Christophe Lambert, Arnaud Huvet Arnaud Huvet Christophe Lambert, Carmen González-Fernández, Christophe Lambert, Philippe Soudant, Nelly Le Goïc, Arnaud Huvet Arnaud Huvet Carmen González-Fernández, Christophe Lambert, Christophe Lambert, Nelly Le Goïc, Carmen González-Fernández, Nelly Le Goïc, Christophe Lambert, Fabienne Le Grand, Nelly Le Goïc, Christophe Lambert, Christophe Lambert, Arnaud Huvet Ika Paul-Pont, Christophe Lambert, Christophe Lambert, C. González-Fernández, Ika Paul-Pont, Christophe Lambert, Arnaud Huvet Christophe Lambert, Christophe Lambert, Philippe Soudant, Philippe Soudant, Arnaud Huvet Arnaud Huvet Philippe Soudant, Christophe Lambert, Ika Paul-Pont, Ika Paul-Pont, Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Fabienne Le Grand, Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Ika Paul-Pont, F. Le Grand, Christophe Lambert, Nelly Le Goïc, Kévin Tallec, Nelly Le Goïc, Arnaud Huvet Anne-Laure Cassone, Philippe Soudant, Anne-Laure Cassone, Anne-Laure Cassone, Ika Paul-Pont, Anne-Laure Cassone, Arnaud Huvet Antoine Bideau, Philippe Soudant, Arnaud Huvet Arnaud Huvet Philippe Soudant, Philippe Soudant, Ika Paul-Pont, Arnaud Huvet Arnaud Huvet Antoine Bideau, Ika Paul-Pont, A. Bideau, Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Christophe Lambert, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Ika Paul-Pont, Philippe Soudant, Philippe Soudant, Philippe Soudant, Philippe Soudant, Philippe Soudant, Philippe Soudant, Myrina Boulais, Claudie Quéré, Nelly Le Goïc, Nelly Le Goïc, Nelly Le Goïc, Nelly Le Goïc, Nelly Le Goïc, Nelly Le Goïc, Nelly Le Goïc, Nelly Le Goïc, Ika Paul-Pont, Claudie Quéré, Ika Paul-Pont, Philippe Soudant, Ika Paul-Pont, Arnaud Huvet Arnaud Huvet Philippe Soudant, Philippe Soudant, Christophe Lambert, Philippe Soudant, Anne-Laure Cassone, Anne-Laure Cassone, Anne-Laure Cassone, Christophe Lambert, Christophe Lambert, Christophe Lambert, Christophe Lambert, Anne-Laure Cassone, Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Arnaud Huvet Anne-Laure Cassone, Anne-Laure Cassone, Anne-Laure Cassone, Kévin Tallec, Ika Paul-Pont, Arnaud Huvet Anne-Laure Cassone, Philippe Soudant, Claudie Quéré, Claudie Quéré, Ika Paul-Pont, Ika Paul-Pont, Claudie Quéré, Philippe Soudant, Christophe Lambert, Carmen González-Fernández, Christophe Lambert, Arnaud Huvet Philippe Soudant, Philippe Soudant, Ika Paul-Pont, Arnaud Huvet Christophe Lambert, Christophe Lambert, Myrina Boulais, Philippe Soudant, Arnaud Huvet Arnaud Huvet Philippe Soudant, Philippe Soudant, Nelly Le Goïc, Philippe Soudant, Nelly Le Goïc, Arnaud Huvet Ika Paul-Pont, Arnaud Huvet Arnaud Huvet Philippe Soudant, Ika Paul-Pont, Philippe Soudant, Arnaud Huvet Ika Paul-Pont, Anne-Laure Cassone, Ika Paul-Pont, Ika Paul-Pont, Nelly Le Goïc, Ika Paul-Pont, Arnaud Huvet Arnaud Huvet Anne-Laure Cassone, Christophe Lambert, Fabienne Le Grand, Arnaud Huvet Christophe Lambert, Ika Paul-Pont, Philippe Soudant, Philippe Soudant, Philippe Soudant, Philippe Soudant, Ika Paul-Pont, Arnaud Huvet Arnaud Huvet Arnaud Huvet Philippe Soudant, Arnaud Huvet Ika Paul-Pont, Arnaud Huvet

Summary

Polystyrene nanoplastics with positively charged surfaces caused dramatic reductions in oyster sperm motility and fertilization success at relatively low concentrations, while negatively charged particles only affected motility at higher doses. The study raises concerns about how nanoplastic surface chemistry affects reproductive success in commercially important marine species.

Polymers
PS
Body Systems
Reproductive
Models
Invertebrate other
Study Type Environmental

Oysters are keystone species that use external fertilization as a sexual mode. The gametes are planktonic and face a wide range of stressors, including plastic litter. Nanoplastics are of increasing concern because their size allows pronounced interactions with biological membranes, making them a potential hazard to marine life. In the present study, oyster spermatozoa were exposed for 1<b> </b>h to various doses (from 0.1 to 25<b> </b>µg mL<sup>-1</sup>) of 50-nm polystyrene beads with amine (50-NH<sub>2</sub> beads) or carboxyl (50-COOH beads) functions. Microscopy revealed adhesion of particles to the spermatozoa membranes, but no translocation of either particle type into cells. Nevertheless, the 50-NH<sub>2</sub> beads at 10<b> </b>µg mL<sup>-1</sup> induced a high spermiotoxicity, characterized by a decrease in the percentage of motile spermatozoa (-79%) and in the velocity (-62%) compared to control spermatozoa, with an overall drop in embryogenesis success (-59%). This major reproduction failure could be linked to a homeostasis disruption in exposed spermatozoa. The 50-COOH beads hampered spermatozoa motility only when administered at 25<b> </b>µg mL<sup>-1</sup> and caused a decrease in the percentage of motile spermatozoa (-66%) and in the velocity (-38%), but did not affect embryogenesis success. Microscopy analyses indicated these effects were probably due to physical blockages by microscale aggregates formed by the 50-COOH beads in seawater. This toxicological study emphasizes that oyster spermatozoa are a useful and sensitive model for (i) deciphering the fine interactions underpinning nanoplastic toxicity and (ii) evaluating adverse effects of plastic nanoparticles on marine biota while waiting for their concentration to be known in the environment.

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