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Trophic transfer of microplastics in an estuarine food chain and the effects of a sorbed legacy pollutant

Limnology and Oceanography Letters 2020 166 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Samantha N. Athey, Samantha N. Athey, Samantha N. Athey, Anthony L. Andrady, Susanne M. Brander Samantha N. Athey, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Anthony L. Andrady, Susanne M. Brander Samantha D. Albotra, Samantha D. Albotra, Samantha N. Athey, Samantha N. Athey, Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Samantha N. Athey, Samantha N. Athey, Bonnie Monteleone, Cessely A. Gordon, Bonnie Monteleone, Cessely A. Gordon, Susanne M. Brander Bonnie Monteleone, Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Bonnie Monteleone, Bonnie Monteleone, Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Susanne M. Brander Bonnie Monteleone, Susanne M. Brander Pamela J. Seaton, Alison R. Taylor, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Pamela J. Seaton, Alison R. Taylor, Anthony L. Andrady, Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Pamela J. Seaton, Alison R. Taylor, Alison R. Taylor, Susanne M. Brander Susanne M. Brander Susanne M. Brander Pamela J. Seaton, Samantha N. Athey, Alison R. Taylor, Anthony L. Andrady, Anthony L. Andrady, Anthony L. Andrady, Alison R. Taylor, Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Susanne M. Brander Anthony L. Andrady, Susanne M. Brander Samantha N. Athey, Samantha N. Athey, Samantha N. Athey, Susanne M. Brander Susanne M. Brander Susanne M. Brander

Summary

Researchers investigated microplastic trophic transfer using a model estuarine food chain of tintinnids (single-celled organisms) and larval silversides fish. They found that fish ingested significantly more microplastics through contaminated prey than through direct exposure, and larvae that consumed DDT-treated microspheres showed increased feeding on contaminated prey. Larvae exposed to microplastics had significantly lower body weight after 16 days, demonstrating that trophic transfer is a meaningful route of microplastic exposure with measurable harmful effects.

Polymers

Abstract Microplastics are of increasing concern as they are readily ingested by aquatic organisms. This study investigated microplastic trophic transfer using larval inland silversides ( Menidia beryllina ) (5 d posthatch) and unicellular tintinnid ( Favella spp.) as a model food chain relevant to North American estuaries. Low‐density polyethylene microspheres (10–20 μ m) were used to compare direct ingestion of microplastics by larval fish and trophic transfer via tintinnid prey. Dichlorodiphenyltrichloroethane (DDT)‐treated microspheres were used to determine sorbed pollutant effects on microplastic ingestion. Larval fish exposed directly to microspheres ingested significantly fewer than those exposed via contaminated prey. Larvae ingested significantly more ciliates containing DDT‐treated microspheres than ciliates containing untreated plastics but did not discriminate when exposed directly. Larvae reared for 16 d following a direct 2 h exposure had significantly lower wet weight values than unexposed controls. Our results demonstrate that trophic transfer is a significant route of microplastic exposure that can cause detrimental effects in sensitive life stages.

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