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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Brain food? Trophic transfer and tissue retention of microplastics by the velvet swimming crab (Necora puber)
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Brain food? Trophic transfer and tissue retention of microplastics by the velvet swimming crab (Necora puber)

机译：健脑食品？天鹅绒游泳蟹的微量塑料的营养转移和组织保留（Necora puber）

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Knowledge of the fate and persistence of microplastics within the tissues of marine organisms remains poor, despite their ubiquitous nature in marine habitats and ingestion by a range of species being well understood. Mussels (Mytilus edulis) were fed 50 mu l (similar to 4.1 x 10(6)) of 0.5 mu m polystyrene fluorescent microplastic spheres. Velvet swimming crabs (Necora puber) were subsequently fed either one or three dosed mussels and were sampled after 1 h, 1, 7 or 21 days post consumption. The stomach, gills, testes and brains were removed and digested. Microplastics were present in all tissues sampled and remained present for the duration of the trial. Only in the stomach and gills was there a decrease in the number of microplastics over time. The stomach and testes showed a significant increase in the number of microplastics present with the number of mussels consumed. The number of microplastics present in the brain remained constant throughout the duration of the trial. Our study is the first to demonstrate the presence of microplastics in the brain of any crustacean species. This has possible implications for a range of behaviours including predator avoidance, foraging and reproduction. Further work is needed to determine whether presence and persistence of microplastics in the brains of crustacean species affects behaviour.
机译：尽管人们对微生物塑料在海洋生物栖息地中无处不在的性质以及许多物种的摄入情况知之甚少，但对海洋生物组织中的微塑料的命运和持久性的了解仍然很少。向贻贝（Mytilus edulis）喂食50μl（类似于4.1 x 10（6））的0.5μm聚苯乙烯荧光微塑料球。随后给天鹅绒游泳蟹（Necora puber）喂食一或三只贻贝，并在食用后1小时，1、7或21天取样。除去胃，腮，睾丸和大脑并进行消化。在所有采样的组织中都存在微塑料，并且在整个试验过程中一直保持这种状态。随着时间的推移，仅在胃和腮中微量塑料的数量有所减少。胃和睾丸显示，随着贻贝消耗量的增加，存在的微塑料的数量显着增加。在整个试验过程中，大脑中存在的微塑料的数量保持恒定。我们的研究首次证明了任何甲壳类动物的大脑中都存在微量塑料。这可能对包括避免捕食，觅食和繁殖在内的一系列行为产生影响。需要做进一步的工作以确定甲壳动物物种的大脑中微塑料的存在和持久性是否会影响行为。

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