Trophic transfer increases the exposure to microplastics in littoral predators

被引：16

作者：

Kangas, Anna ^{[1
]}

Setala, Outi ^{[1
]}

Kauppi, Laura ^{[2
]}

Lehtiniemi, Maiju ^{[1
]}

机构：

[1] Finnish Environm Inst, Latokartanonkaari 11, Helsinki 00790, Finland

[2] Univ Helsinki, Tvarminne Zool Stn, JA Palmenin tie 260, FI-10900 Hango, Finland

来源：

MARINE POLLUTION BULLETIN | 2023年 / 196卷

基金：

芬兰科学院;

关键词：

Microplastic; Food web; Baltic Sea; Crustacean; Palaemon elegans; Praunus flexuosus; FEEDING SELECTIVITY; PRAUNUS-FLEXUOSUS; BALTIC SEA; MARINE; INGESTION; PARTICLES; ABUNDANCE; DEBRIS; ENVIRONMENT; ORGANISMS;

D O I：

10.1016/j.marpolbul.2023.115553

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Predators in aquatic environments can be exposed to microplastics (MPs) directly through water and indirectly through prey. Laboratory experiments were conducted to study the potential of MP trophic transfer in Baltic Sea littoral food chains of different lengths. The longest studied food chain had three trophic levels: zooplankton, chameleon shrimp (Praunus flexuosus) and rockpool prawn (Palaemon elegans). 10 mu m fluorescence microspheres were used as tracer MP particles and MP ingestion was verified with epifluorescence microscopy. Transfer of MPs occurred up to both second and third trophic level. The number of ingested microspheres in both chameleon shrimp and rockpool prawn was higher when the animals were exposed through pre-exposed prey in comparison to direct exposure through the water. The results show that trophic transfer may be an important pathway of and increase the microplastic exposure for some animals at higher trophic levels in highly polluted areas.

引用

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