Details:

Journal Title:
Scientific Reports
Personal Author:
McNeish, R. E. ; Kim, L. H. ; Barrett, H. A. ; Mason, S. A. ; Kelly, J. J. ; ... More +
McNeish, R. E. ; Kim, L. H. ; Barrett, H. A. ; Mason, S. A. ; Kelly, J. J. ; Hoellein, T. J. Less -
NOAA Program & Office:
Sea Grant ; OAR (Oceanic and Atmospheric Research)
Sea Grant ; OAR (Oceanic and Atmospheric Research) Less -
Sea Grant Program:
ILIN (Illinois-Indiana Sea Grant)
Description:
Microplastic is a contaminant of concern worldwide. Rivers are implicated as major pathways of microplastic transport to marine and lake ecosystems, and microplastic ingestion by freshwater biota is a risk associated with microplastic contamination, but there is little research on microplastic ecology within freshwater ecosystems. Microplastic uptake by fish is likely affected by environmental microplastic abundance and aspects of fish ecology, but these relationships have rarely been addressed. We measured the abundance and composition of microplastic in fish and surface waters from 3 major tributaries of Lake Michigan, USA. Microplastic was detected in fish and surface waters from all 3 sites, but there was no correlation between microplastic concentrations in fish and surface waters. Rather, there was a significant effect of functional feeding group on microplastic concentration in fish. Neogobius melanostomus (round goby, a zoobenthivore) had the highest concentration of gut microplastic (19 particles fish-1) compared to 10 other fish taxa measured, and had a positive linear relationship between body size and number of microplastic particles. Surface water microplastic concentrations were lowest in the most northern, forested watershed, and highest in the most southern, agriculturally dominated watershed. Results suggest microplastic pollution is common in river food webs and is connected to species feeding characteristics. Future research should focus on understanding the movement of microplastic from point-source and diffuse sources and into aquatic ecosystems, which will support pollution management efforts on inland waters.
Keywords:
[+]
Ecology Freshwater Fishes Microplastics
Source:
Scientific Reports 8 (11639) 
DOI:
https://doi.org/10.1038/s41598-018-29980-9
Pubmed Central ID:
PMC6076259
Document Type:
Journal Article
Place as Subject:
Michigan, Lake.
Rights Information:
CC BY
Compliance:
PMC
Main Document Checksum:
[+]
urn:sha256:988bc4928c237b45d933bc7e305200e7b18e9415f4a0158f34731f04afb75cbe
Download URL:
https://repository.library.noaa.gov/view/noaa/24043/noaa_24043_DS1.pdf
File Type:

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