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Characteristics of microplastic pollution in golden pompano (Trachinotus ovatus) aquaculture areas and the relationship between colonized-microbiota on microplastics and intestinal microflora

The Science of The Total Environment 2022 39 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.

Mingjian Liu, Kecheng Zhu, Kecheng Zhu, Kecheng Zhu, Kecheng Zhu, Mingjian Liu, Kecheng Zhu, Jie Gao, Mingjian Liu, Kecheng Zhu, Kecheng Zhu, Kecheng Zhu, Kecheng Zhu, Kecheng Zhu, Nan Zhang, Nan Zhang, Mingjian Liu, Mingjian Liu, Mingjian Liu, Hua‐Yang Guo, Hua‐Yang Guo, Bao-Suo Liu, Bao-Suo Liu, Jie Gao, Hua‐Yang Guo, Hua‐Yang Guo, Nan Zhang, Kecheng Zhu, Nan Zhang, Kecheng Zhu, Liang Guo, Liang Guo, Kecheng Zhu, Nan Zhang, Bao-Suo Liu, Bao-Suo Liu, Bao-Suo Liu, Bao-Suo Liu, Bao-Suo Liu, Bao-Suo Liu, Mingjian Liu, Kecheng Zhu, Nan Zhang, Nan Zhang, Shigui Jiang, Shigui Jiang, Shigui Jiang, Dian‐Chang Zhang Shigui Jiang, Nan Zhang, Shigui Jiang, Shigui Jiang, Kecheng Zhu, Mingjian Liu, Mingjian Liu, Dian‐Chang Zhang Dian‐Chang Zhang Dian‐Chang Zhang

Summary

Researchers found that microplastics in golden pompano aquaculture areas colonize with distinct microbial communities that overlap with the fish's gut microbiota, increasing Proteobacteria and decreasing Firmicutes in the intestinal flora of fish living in more contaminated estuarine settings.

Study Type Environmental

Microplastic (MPs) pollution is a global marine environmental problem. The effects of MPs on the gut microbiota of aquatic organisms have received considerable attention. For example, microbes colonizing MPs in pond cultures alter the structure and function of the intestinal microbes of shrimp and fish. It was hypothesized that bacteria on MPs in natural mariculture areas also interact with the intestinal flora of golden pompano (Trachinotus ovatus) because biofilms can form on the surface of MPs during long-term floating in seawater. To our knowledge, this study is the first to investigate MPs pollution in T. ovatus aquaculture. DNA sequencing and bioinformatics analysis confirmed the effect of microbial colonization of MPs on the intestinal flora of T. ovatus. The MPs detected in the gut wet weight (w.w.) of golden pompano (546 ± 52 items/g) were mainly pellets and fragments of blue or green, whereas the sediment MPs dry weight (d.w.) (4765 ± 116 items/kg) were mainly black fibers. The MPs richness in the sediment gradually increased from the open-sea aquaculture area to the estuarine aquaculture area and was positively correlated with the MPs richness in the intestinal tract of golden pompano. MPs 20-200 μm were the most common in the gut and sediment. The intake of MPs increased the abundance of Proteobacteria and decreased that of Firmicutes in the intestinal flora. The functional compositions of MP-colonizing microbes and gut microbiota were similar, suggesting that the two communities influence each other. Network analysis further confirmed this and revealed that Vibrio plays a key role in the intestinal flora and surface microorganisms of MPs. Overall, the intake of MPs by aquatic animals not only affects the intestinal flora and intestinal microbial function, but also poses potential risks to aquaculture.

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