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Field evidence for microplastic interactions in marine benthic invertebrates
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Field evidence for microplastic interactions in marine benthic invertebrates
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Journal Article
Field evidence for microplastic interactions in marine benthic invertebrates
2021
Overview
Microplastics represent an important issue of concern for marine ecosystems worldwide, and closed seas, such as the Mediterranean, are among the most affected by this increasing threat. These pollutants accumulate in large quantities in benthic environments causing detrimental effects on diverse biocenoses. The main focus of this study is on the ‘polychaetes-microplastics’ interactions, particularly on two species of benthic polychaetes with different ecology and feeding strategies: the sessile and filter feeder
Sabella spallanzanii
(Gmelin, 1791) and the vagile carnivorous
Hermodice carunculata
(Pallas, 1766). Since not standardized protocols are proposed in literature to date, we compared efficiencies of diverse common procedures suitable for digesting organic matter of polychaetes. After the definition of an efficient digestion protocol for microplastics extraction for both polychaetes, our results showed high microplastics ingestion in both species. Microplastics were found in 42% of individuals
of S. spallanzanii
, with a mean of 1 (± 1.62) microplastics per individual, in almost all individuals of
H. carunculata
(93%), with a mean of 3.35 (± 2.60). These significant differences emerged between
S. spallanzanii
and
H. carunculata
, is probably due to the diverse feeding strategies. The susceptibility to this pollutant makes these species good bioindicators of the impact of microplastics on biota.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
