TY - JOUR
T1 - Microplastics in the Indian and South Atlantic oceans translocate to gills, digestive glands, and muscle of the chokka squid Loligo reynaudii
AU - Bothma, Francois
AU - Uren, Ryan Christian
AU - Iordachescu, Lucian
AU - van der Lingen, Carl D.
AU - Bouwman, Hindrik
N1 - Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.
PY - 2024/5
Y1 - 2024/5
N2 - Comparative microplastic (MP) data for cephalopods between oceans is scarce. Our aim was to quantify, characterise, and compare MPs in gills, digestive gland, and mantle of chokka squid from the South Atlantic Ocean (SAO) and Indian Ocean (IO) off the coast of South Africa. South African squid had more MPs compared with other studies (means = 2.0 and 0.4 in SAO and IO squid mantle, respectively). Blue fibres were dominant. Identifiable MPs were polyethylene. Despite IO water having higher MP concentrations than the SAO, SAO squid had higher MP concentrations. Dilution by growth is the likely reason for the lower MP concentrations. Fibres were shorter in SAO than IO squid. However, we could not explain why fibre and mantle lengths from both oceans were positively correlated. Squid may not be the best indicator of marine MPs. The characteristics of MPs in squid can be used to track stocks and migrations.
AB - Comparative microplastic (MP) data for cephalopods between oceans is scarce. Our aim was to quantify, characterise, and compare MPs in gills, digestive gland, and mantle of chokka squid from the South Atlantic Ocean (SAO) and Indian Ocean (IO) off the coast of South Africa. South African squid had more MPs compared with other studies (means = 2.0 and 0.4 in SAO and IO squid mantle, respectively). Blue fibres were dominant. Identifiable MPs were polyethylene. Despite IO water having higher MP concentrations than the SAO, SAO squid had higher MP concentrations. Dilution by growth is the likely reason for the lower MP concentrations. Fibres were shorter in SAO than IO squid. However, we could not explain why fibre and mantle lengths from both oceans were positively correlated. Squid may not be the best indicator of marine MPs. The characteristics of MPs in squid can be used to track stocks and migrations.
KW - Fibre length
KW - Indian Ocean
KW - Microplastics
KW - South Atlantic Ocean
KW - Tissue translocation
UR - http://www.scopus.com/inward/record.url?scp=85190883260&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2024.116371
DO - 10.1016/j.marpolbul.2024.116371
M3 - Journal article
C2 - 38657492
AN - SCOPUS:85190883260
SN - 0025-326X
VL - 202
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
M1 - 116371
ER -