Journal
MARINE POLLUTION BULLETIN
Volume 116, Issue 1-2, Pages 182-191Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.12.067
Keywords
Filtration apparatus; Anthropogenic particles; Fish; Microplastics; Gill rakers; Clupeiformes
Funding
- Fund for Scientific Research (F.R.S.-FNRS)
- Ph.D. F.R.I.A. grant (Fund for Research Training in Industry and in Agriculture, F.R.S.-FNRS)
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Anthropogenic particles (APs), including microplastics, are ingested by a wide variety of marine organisms. Exposure of Clupeiformes (e.g. herrings, anchovies, sardines) is poorly studied despite their economic and ecological importance. This study aims to describe the morphology of the filtration apparatus of three wild-caught Clupeiformes (Sardina pilchardus, Clupea harengus and Engraulis encrasicolus) and to relate the results to ingested APs. Consequently, the species with the more efficient filtration apparatus will be more likely to ingest APs. We hypothesized that sardines were the most exposed species. The filtration area and particle retention threshold were determined in the three species, with sardines displaying the highest filtration area and the closest gill rakers. Sardines ingested more fibers and smaller fragments, confirming that it is the most efficient filtering species. These two results lead to the conclusion that, among the three studied, the sardine is the species most exposed to APs. (C) 2017 Elsevier Ltd. All rights reserved.
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