Consumption of microplastic polyethylene terephthalate by juvenile salmon Oncorhynchus (Parasalmo) mykiss under artificial conditions
https://doi.org/10.36038/0234-2774-2025-26-4-133-140
EDN: YAWDMR
Abstract
In the course of laboratory studies, the effect of microplastics made of polyethylene terephthalate (MP) polymer on juvenile of Kamchatka steelhead Oncorhynchus (Parasalmo) mykiss in an aquatic environment was studied. Thirty specimens were randomly distributed across three aquariums: one served as a control tank, and varying amounts of MP particles were added to the aquatic environment of the other two. The exposition lasted 30 days. The results of the study of their gastrointestinal tract (GIT) at the end of the experiment showed that the juveniles absorbed it both from the water and from the bottom of the aquarium. MP was detected in the gastrointestinal tract in the amount of up to 460 particles/specimen. Fishes from the control group, where there were no microplastics in the water, grew better than the one that was exposed to MP by ingestion. The relationship between fish growth (length and weight) and microplastic consumption is estimated and discussed.
About the Authors
I. V. Sedletsky
State Scientific Center of the Russian Federation «VNIRO»
Russian Federation
Russian Federation
105187; Moscow
V. A. Belyaev
State Scientific Center of the Russian Federation «VNIRO»
Russian Federation
Russian Federation
105187; Moscow
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Review
For citations:
Sedletsky I.V., Belyaev V.A. Consumption of microplastic polyethylene terephthalate by juvenile salmon Oncorhynchus (Parasalmo) mykiss under artificial conditions. Problems of Fisheries. 2025;26(4):133-140. (In Russ.) https://doi.org/10.36038/0234-2774-2025-26-4-133-140. EDN: YAWDMR
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