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Accumulation and immunotoxicity of microplastics in the estuarine worm Hediste diversicolor in environmentally relevant conditions of exposure

Environmental Science and Pollution Research 2018 85 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Messika Revel, Messika Revel, Messika Revel, Messika Revel, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Catherine Mouneyrac, Catherine Mouneyrac, Nadiia Yakovenko, Messika Revel, Messika Revel, Messika Revel, Messika Revel, Messika Revel, Messika Revel, Messika Revel, Messika Revel, Catherine Mouneyrac, Amélie Châtel Nadiia Yakovenko, Amélie Châtel Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Amélie Châtel Amélie Châtel Amélie Châtel Catherine Mouneyrac, Catherine Mouneyrac, Amélie Châtel Catherine Mouneyrac, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Amélie Châtel Messika Revel, Catherine Mouneyrac, Catherine Mouneyrac, Messika Revel, Timothy Caley, Timothy Caley, Catherine Mouneyrac, Catherine Mouneyrac, Catherine Mouneyrac, Amélie Châtel Catherine Mouneyrac, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Nadiia Yakovenko, Amélie Châtel Nadiia Yakovenko, Messika Revel, Catherine Mouneyrac, Catherine Mouneyrac, Catherine Mouneyrac, Catherine Mouneyrac, Catherine Guillet, Catherine Guillet, Catherine Guillet, Catherine Guillet, Amélie Châtel Catherine Mouneyrac, Amélie Châtel Amélie Châtel Nadiia Yakovenko, Amélie Châtel Nadiia Yakovenko, Amélie Châtel Amélie Châtel Catherine Mouneyrac, Catherine Mouneyrac, Catherine Mouneyrac, Catherine Mouneyrac, Catherine Mouneyrac, Messika Revel, Messika Revel, Catherine Mouneyrac, Amélie Châtel Nadiia Yakovenko, Amélie Châtel Catherine Mouneyrac, Nadiia Yakovenko, Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Timothy Caley, Timothy Caley, Amélie Châtel Amélie Châtel Catherine Mouneyrac, Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Catherine Mouneyrac, Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Catherine Mouneyrac, Catherine Mouneyrac, Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel Amélie Châtel

Summary

The estuarine ragworm Hediste diversicolor was exposed to polyethylene and polypropylene microplastics through water or sediment at two concentrations, with accumulation confirmed in both exposure routes and immune cell function (phagocytosis activity) significantly reduced at higher concentrations. The study documents immunotoxic effects of environmentally relevant microplastic mixtures in an estuarine worm, expanding evidence beyond marine and freshwater species.

Polymers

PE PP

Body Systems

Immune

Study Type Environmental

The presence of plastic debris < 5 mm called microplastics (MPs) which results mainly from macroplastic's fragmentation has been reported in aquatic ecosystems. Several studies have shown that MPs are persistent and their accumulation was observed in various aquatic species. However, the majority of studies focused on marine species, and much less on continental and estuarine biota. The goal of the present study was to investigate the effects of a mixture of two types of MPs (polyethylene and polypropylene), frequently found in natural environments, towards the ragworm Hediste diversicolor to determine their accumulation in organisms exposed through the water phase or sediment. Two concentrations of exposure were selected for medium and heavily contaminated areas reported for water phase (10 and 100 μg/L) and sediment (10 and 50 mg of MPs/kg). To study the potential toxic effect of MPs, immune parameters were selected since they are involved in many defense mechanisms against xenobiotics or infectious agents. An average number of MP items/worm ranging from 0 to 2.5 and from 1 to 36 were identified in animals exposed to the lowest and the highest concentration of MPs through water exposure. In worms exposed through sediment, less than 1 MP/worm was found and a greater number of particles were identified in depurated sediment. For immunotoxic impact, MP exposure induced a decrease in coelomocytes viability, but no alteration of phagocytosis activity, phenoloxydase, and acid phosphatase was measured. This study brings new results on the potential accumulation and immunotoxicity of MPs for the ragworm H. diversicolor who plays a key role in the structure and functioning of estuarine ecosystem.

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