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From the Seafloor to the Surface: a Global Review of Gastropods as Bioindicators of Marine Microplastics.

From the Seafloor to the Surface: a Global Review of Gastropods as Bioindicators of Marine Microplastics.

Authors :
Curren, Emily
Yu, Denise Ching Yi
Leong, Sandric Chee Yew
Source :
Water, Air & Soil Pollution; Jan2024, Vol. 235 Issue 1, p1-26, 26p
Publication Year :
2024

Abstract

Microplastic (MP) pollution is a prevalent problem in marine ecosystems. These particles are often consumed unintentionally by marine organisms due to their small size, affecting their growth and development. Gastropods are an abundant, diverse group of molluscs which play important ecological roles and have significant economic value in the aquaculture industry. As marine gastropods have not yet been evaluated as bioindicators for MP pollution prior to this study, we hypothesise that these gastropods function as indicator species for marine MP pollution. We evaluated global literature available on the evidence of MPs in marine gastropods according to five gastropod subclasses. An average of 32.79 pieces of plastic/individual was found across all marine gastropods, with Caenogastropods having the greatest MP abundance (77.10 pieces/individual). Fibres (69%) and fragments (22%) were the main MP types observed across the gastropods, with Acrylic (22%), Polyamide (19%), and Polyethylene Terephthalate (13%) as the major polymer types. We also hypothesise that MPs are found in commercially available gastropods from local sources in Singapore. Hence, we examined the presence of MPs in the Caenogastropod Laevistrombus turturella from the coastal waters of Singapore and found an average of 273 pieces/individual, consisting of mostly fibres (35%) and film (31%). We also provide insight into the mechanism of MP uptake and release in gastropods, in relation to the effects of MP ingestion in these organisms. Gastropod feeding patterns were also found to impact MP abundance. Hence, we proposed gastropods to be essential indicators of MP pollution in marine environments. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00496979
Volume :
235
Issue :
1
Database :
Complementary Index
Journal :
Water, Air & Soil Pollution
Publication Type :
Academic Journal
Accession number :
175136748
Full Text :
https://doi.org/10.1007/s11270-023-06823-6