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Transfer pattern of microplastics at an individual level: A case study of two typical Sciaenidae fish in coastal waters

The Science of The Total Environment 2023 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Shuo Zhang, Ruilin Shu, Ruilin Shu, Shike Gao Shike Gao Baogui Liang, Shike Gao Shike Gao Shike Gao Ruilin Shu, Ruilin Shu, Baogui Liang, Baogui Liang, Baogui Liang, Baogui Liang, Wenbo Hu, Li Zheng, Li Zheng, Li Zheng, Shike Gao Ruilin Shu, Shike Gao Shuo Zhang, Shike Gao Shuo Zhang, Shike Gao Li Zheng, Baogui Liang, Ruilin Shu, Wenbo Hu, Baogui Liang, Baogui Liang, Baogui Liang, Baogui Liang, Baogui Liang, Baogui Liang, Baogui Liang, Baogui Liang, Shike Gao Shike Gao Wenwen Yu, Baogui Liang, Baogui Liang, Shuo Zhang, Ruilin Shu, Wenwen Yu, Ruilin Shu, Li Zheng, Shike Gao Shike Gao Li Zheng, Ruilin Shu, Ruilin Shu, Wenwen Yu, Li Zheng, Li Zheng, Wenwen Yu, Baogui Liang, Shike Gao Li Zheng, Shuo Zhang, Baogui Liang, Wenwen Yu, Wenwen Yu, Wenwen Yu, Li Zheng, Wenwen Yu, Li Zheng, Li Zheng, Wenwen Yu, Wenwen Yu, Shuo Zhang, Shuo Zhang, Wenwen Yu, Shike Gao Wenwen Yu, Wenwen Yu, Shuo Zhang, Shike Gao Shike Gao

Summary

By examining microplastics in individual fish of two Sciaenidae species from Chinese coastal waters, this study found that MP abundance increased with fish body length, suggesting potential biomagnification at the individual level. Most MPs were blue PET fibers, reflecting contamination from textile waste, and the findings highlight the risk of MP accumulation in commercially important fish species.

Polymers

PE PET

Body Systems

Digestive

Microplastics (MPs) are recognized as global pollutants. The occurrence and distribution of MP transfer at the species level have been reported, but few studies have focused on the individual level. In this study, two typical migratory demersal species (Collichthys lucidus and Larimichthys polyactis, family Sciaenidae) from the coastal waters of the Lvsi fishing ground were selected to analyze the distribution characteristics of MPs in their gastrointestinal tracts and to explore the potential biomagnification of MPs in different body lengths. The results showed that the main MP color found in both species was blue (>80 %), while the main MP shape was fiber (>90 %), and the main MP polymer type was polyethylene terephthalate (PET) (>70 %). Overall, the abundance of MPs in C. lucidus (3.24 ± 1.57 pieces/fish) was higher than that in L. polyactis (2.24 ± 0.56 pieces/fish). The abundance of MPs in C. lucidus with a body length >90 mm was significantly higher than that with a body length <90 mm, and no significant difference was found in L. polyactis. We believe that the shift in feeding habits during the life history of the two species is an important factor that affects the variation in MPs between body lengths. Additionally, there was a significant positive correlation between MPs and the length (weight) of C. lucidus but no correlation in L. polyactis. There was no significant correlation between trophic level and MPs in either species. This indicated that MP bioaccumulation only occurred in C. lucidus, and MP biomagnification did not occur in either species. We suggest that further research be conducted on MPs ingested by more species at an individual level regarding the biomagnification/bioaccumulation phenomenon. This will help further elucidate the characteristics of MP transfer in the food webs of ecosystems and provide theoretical support for understanding MP pollution in coastal waters.

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