Publications by authors named "Ryan Uren"
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.
View Article and Find Full Text PDFArticle Synopsis
- Elevated metal concentrations in marine organisms can be harmful to both marine life and humans who eat them, with a recent study focusing on brown mussels in Algoa Bay, South Africa.
- Researchers collected mussels from seven sites and found significant differences in metal concentrations, some of which were linked to local pollution sources.
- Overall, mussels from Algoa Bay are generally considered safe for human consumption, aside from one site with elevated lead levels, but potential health concerns remain when combined with other contaminants like bisphenols and UV filters.
Halogenated natural products (HNPs) and persistent organic pollutants (POPs) were quantified in South African sardines () from one site in the South Atlantic Ocean and one in the Indian Ocean. At both sites, HNPs [2,3,3',4,4',5,5'-heptachloro-1'-methyl-1,2'-bipyrrole (Q1), mixed halogenated compound 1 (MHC-1), 2,4,6-tribromoanisole (2,4,6-TBA), 2'-MeO-BDE 68 (BC-2), and 6-MeO-BDE 47 (BC-3)] were 1 order of magnitude higher concentrated than anthropogenic POPs [mainly polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT), ∼3 ng/g lipids]. MHC-1 and Q1 were the major HNPs in the samples from both sites, contributing with up to 49 and 52 ng/g lipids, respectively.
View Article and Find Full Text PDFArticle Synopsis
- * The most common pollutant found was the HNP 2,3,3',4,4',5,5'-heptachloro-1'-methyl-1,2'-bipyrrole (Q1), with varying concentrations across three sites: Indian Ocean, transitional area, and South Atlantic Ocean.
- * Polychlorinated biphenyls (PCBs) were the main type of anthropogenic POPs identified, with PCB