کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5750229 1619692 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adherence of microplastics to soft tissue of mussels: A novel way to uptake microplastics beyond ingestion
ترجمه فارسی عنوان
پیوستگی میکروپلاستی به بافت نرم گوشت گاو: راه جدید برای جذب میکرو پلاسماهای بیش از مصرف
کلمات کلیدی
آلزایمر، تبعیت، الیاف مصنوعی، مسی انباشت،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Microplastics were isolated from specific organs of mussels.
- The abundance of microplastic by weight differed in organs of field mussels.
- Microfibers were observed in foot and mantle of mussels in uptake and clearance experiments.
- Adherence contributed about 50% of the microplastic uptake in mussels.
- Adherence is a novel way for animals to uptake microplastics beyond ingestion.

Microplastic pollution is recognized as an emerging threat to aquatic ecosystems. One of the main environmental risks associated with microplastics is their bioavailability to marine organisms. Up to date, ingestion has been widely accepted as the sole way for the animals to uptake microplastics. Nevertheless, microplastics have also been found in some organs which are not involved in the process of ingestion. We hypothesize that the animal might uptake microplastics through adherence in addition to ingestion. To test this hypothesis, we collected mussels from the fishery farms, conducted exposure/clearance experiments and analyzed the accumulation of microplastics in specific organ of mussels. Our studies clearly showed the uptake of microplastic in multiple organs of mussels. In the field investigations, we found that the abundance of microplastic by weight but not by individual showed significant difference among organs, and the intestine contained the highest level of microplastics (9.2 items/g). In the uptake and clearance experiment, the accumulation and retention of microfibers could also be observed in all tested organs of mussels including foot and mantle. Our results strongly suggest that adherence rather than ingestion led to the accumulation of microplastics in those organs which are not involved in ingestion process. To our best knowledge, it is the first time to propose that adherence is a novel way for animals to uptake microplastics beyond ingestion. This new finding makes us rethink about the bioavailability, accumulation and toxicity of microplastics to aquatic animals.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 610–611, 1 January 2018, Pages 635-640
نویسندگان
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