Elder fish means more microplastics? Alaska pollock microplastic story in the Bering Sea

Author:

Ding Jinfeng1ORCID,Ju Peng1ORCID,Ran Quan2,Li Jingxi1ORCID,Jiang Fenghua1,Cao Wei1,Zhang Jie2ORCID,Sun Chengjun1ORCID

Affiliation:

1. Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, No. 6 Xianxialing Road, Qingdao 266061, PR China.

2. Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, No. 1 Beichen West Road, Beijing 100101, PR China.

Abstract

Marine microplastics are an increasingly big concern. We analyze the occurrence of microplastics in Alaska pollock ( Gadus chalcogrammus ) across 2+ to 12+ ages sampled from the Bering Sea. Results show that 85% of the fish have ingested microplastics and elder fish ingest more with over a third of microplastics in the 100- to 500-micrometer size range, indicating the prevalence of microplastics in Alaska pollock distributed in the Bering Sea. A positive linear relationship is obtained between fish age and microplastic size. Meanwhile, the number of polymer types increases in elder fish. The link between microplastic characteristics in Alaska pollock and the surrounding seawater suggests an extended spatial impact of microplastics. The impact of age-related microplastic ingestion on the population quality of Alaska pollock is still unknown. Therefore, we need to further investigate the potential impact of microplastics on marine organisms and the marine ecosystem, taking age as an important factor.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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