Virgin microplastics are not causing imminent harm to fish after dietary exposure

Boris Jovanović*, Kerem Gökdağ, Olgaç Güven, Yilmaz Emre, Elizabeth M. Whitley, Ahmet Erkan Kideys

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Among aquatic organisms, fish are particularly susceptible to ingesting microplastic particles due to their attractive coloration, buoyancy, and resemblance to food. However, in previous experimental setups, fish were usually exposed to unrealistically high concentrations of microplastics, or the microplastics were deliberately contaminated with persistent organic chemicals; also, in many experiments, the fish were exposed only during the larval stages. The present study investigated the effects of virgin microplastics in gilt-head seabream (Sparus aurata) after 45 days’ exposure at 0.1 g kg−1 bodyweight day−1 to 6 common types of microplastics. The overall growth, biochemical analyses of the blood, histopathology, and the potential of the microplastics to accumulate in gastrointestinal organs or translocate to the liver and muscles were monitored and recorded. The results revealed that ingestion of virgin microplastics does not cause imminent harm to the adult gilt-head seabream during 45 days of exposure and an additional 30 days of depuration. The retention of virgin microplastics in the gastrointestinal tract was fairly low, indicating effective elimination of microplastics from the body of the fish and no significant accumulation after successive meals. Therefore, both the short- and the long-term retention potential of microplastics in the gastrointestinal tract of fish is close to zero. However, some large particles remained trapped in the liver, and 5.3% of all the livers analyzed contained at least one microplastic particle. In conclusion, the dietary exposure of S. aurata to 6 common types of virgin microplastics did not induce stress, alter the growth rate, cause pathology, or cause the microplastics to accumulate in the gastrointestinal tract of the fish.

Original languageEnglish
JournalMarine Pollution Bulletin
Volume130
Pages (from-to)123-131
ISSN0025-326X
DOIs
Publication statusPublished - 2018

Keywords

  • Diet
  • Fish
  • Histopathology
  • Marine litter
  • Microplastics
  • Toxicity

Cite this

Jovanović, B., Gökdağ, K., Güven, O., Emre, Y., Whitley, E. M., & Kideys, A. E. (2018). Virgin microplastics are not causing imminent harm to fish after dietary exposure. Marine Pollution Bulletin, 130, 123-131. https://doi.org/10.1016/j.marpolbul.2018.03.016
Jovanović, Boris ; Gökdağ, Kerem ; Güven, Olgaç ; Emre, Yilmaz ; Whitley, Elizabeth M. ; Kideys, Ahmet Erkan. / Virgin microplastics are not causing imminent harm to fish after dietary exposure. In: Marine Pollution Bulletin. 2018 ; Vol. 130. pp. 123-131.
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abstract = "Among aquatic organisms, fish are particularly susceptible to ingesting microplastic particles due to their attractive coloration, buoyancy, and resemblance to food. However, in previous experimental setups, fish were usually exposed to unrealistically high concentrations of microplastics, or the microplastics were deliberately contaminated with persistent organic chemicals; also, in many experiments, the fish were exposed only during the larval stages. The present study investigated the effects of virgin microplastics in gilt-head seabream (Sparus aurata) after 45 days’ exposure at 0.1 g kg−1 bodyweight day−1 to 6 common types of microplastics. The overall growth, biochemical analyses of the blood, histopathology, and the potential of the microplastics to accumulate in gastrointestinal organs or translocate to the liver and muscles were monitored and recorded. The results revealed that ingestion of virgin microplastics does not cause imminent harm to the adult gilt-head seabream during 45 days of exposure and an additional 30 days of depuration. The retention of virgin microplastics in the gastrointestinal tract was fairly low, indicating effective elimination of microplastics from the body of the fish and no significant accumulation after successive meals. Therefore, both the short- and the long-term retention potential of microplastics in the gastrointestinal tract of fish is close to zero. However, some large particles remained trapped in the liver, and 5.3{\%} of all the livers analyzed contained at least one microplastic particle. In conclusion, the dietary exposure of S. aurata to 6 common types of virgin microplastics did not induce stress, alter the growth rate, cause pathology, or cause the microplastics to accumulate in the gastrointestinal tract of the fish.",
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Jovanović, B, Gökdağ, K, Güven, O, Emre, Y, Whitley, EM & Kideys, AE 2018, 'Virgin microplastics are not causing imminent harm to fish after dietary exposure', Marine Pollution Bulletin, vol. 130, pp. 123-131. https://doi.org/10.1016/j.marpolbul.2018.03.016

Virgin microplastics are not causing imminent harm to fish after dietary exposure. / Jovanović, Boris; Gökdağ, Kerem; Güven, Olgaç; Emre, Yilmaz; Whitley, Elizabeth M.; Kideys, Ahmet Erkan.

In: Marine Pollution Bulletin, Vol. 130, 2018, p. 123-131.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Virgin microplastics are not causing imminent harm to fish after dietary exposure

AU - Jovanović, Boris

AU - Gökdağ, Kerem

AU - Güven, Olgaç

AU - Emre, Yilmaz

AU - Whitley, Elizabeth M.

AU - Kideys, Ahmet Erkan

PY - 2018

Y1 - 2018

N2 - Among aquatic organisms, fish are particularly susceptible to ingesting microplastic particles due to their attractive coloration, buoyancy, and resemblance to food. However, in previous experimental setups, fish were usually exposed to unrealistically high concentrations of microplastics, or the microplastics were deliberately contaminated with persistent organic chemicals; also, in many experiments, the fish were exposed only during the larval stages. The present study investigated the effects of virgin microplastics in gilt-head seabream (Sparus aurata) after 45 days’ exposure at 0.1 g kg−1 bodyweight day−1 to 6 common types of microplastics. The overall growth, biochemical analyses of the blood, histopathology, and the potential of the microplastics to accumulate in gastrointestinal organs or translocate to the liver and muscles were monitored and recorded. The results revealed that ingestion of virgin microplastics does not cause imminent harm to the adult gilt-head seabream during 45 days of exposure and an additional 30 days of depuration. The retention of virgin microplastics in the gastrointestinal tract was fairly low, indicating effective elimination of microplastics from the body of the fish and no significant accumulation after successive meals. Therefore, both the short- and the long-term retention potential of microplastics in the gastrointestinal tract of fish is close to zero. However, some large particles remained trapped in the liver, and 5.3% of all the livers analyzed contained at least one microplastic particle. In conclusion, the dietary exposure of S. aurata to 6 common types of virgin microplastics did not induce stress, alter the growth rate, cause pathology, or cause the microplastics to accumulate in the gastrointestinal tract of the fish.

AB - Among aquatic organisms, fish are particularly susceptible to ingesting microplastic particles due to their attractive coloration, buoyancy, and resemblance to food. However, in previous experimental setups, fish were usually exposed to unrealistically high concentrations of microplastics, or the microplastics were deliberately contaminated with persistent organic chemicals; also, in many experiments, the fish were exposed only during the larval stages. The present study investigated the effects of virgin microplastics in gilt-head seabream (Sparus aurata) after 45 days’ exposure at 0.1 g kg−1 bodyweight day−1 to 6 common types of microplastics. The overall growth, biochemical analyses of the blood, histopathology, and the potential of the microplastics to accumulate in gastrointestinal organs or translocate to the liver and muscles were monitored and recorded. The results revealed that ingestion of virgin microplastics does not cause imminent harm to the adult gilt-head seabream during 45 days of exposure and an additional 30 days of depuration. The retention of virgin microplastics in the gastrointestinal tract was fairly low, indicating effective elimination of microplastics from the body of the fish and no significant accumulation after successive meals. Therefore, both the short- and the long-term retention potential of microplastics in the gastrointestinal tract of fish is close to zero. However, some large particles remained trapped in the liver, and 5.3% of all the livers analyzed contained at least one microplastic particle. In conclusion, the dietary exposure of S. aurata to 6 common types of virgin microplastics did not induce stress, alter the growth rate, cause pathology, or cause the microplastics to accumulate in the gastrointestinal tract of the fish.

KW - Diet

KW - Fish

KW - Histopathology

KW - Marine litter

KW - Microplastics

KW - Toxicity

U2 - 10.1016/j.marpolbul.2018.03.016

DO - 10.1016/j.marpolbul.2018.03.016

M3 - Journal article

VL - 130

SP - 123

EP - 131

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

SN - 0025-326X

ER -