Human health risk attributed to consumption of seafood and recreation swimming in Negombo Lagoon, Sri Lanka: An assessment on lagoon water and inhabitant oysters (Crassostrea cucullata Born, 1778)

Samuel Ayitey, T.W.G.F. Mafaziya Nijamdeen, H Peiris, Sunanda Kodikara Kodikara Arachchilage, Isabelle George, Farid Dahdouh Guebas, K.H.M. Ashoka Deepananda

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The Negombo Lagoon is a coastal lagoon influenced by local communities that introduce waste into its ecosystem. This study examined seven sewage entry points, out of which five sites were chosen for oyster sampling based on availability. Physicochemical and microbiological parameters of water (measured in triplicate at each site, n = 84) and oyster samples (total length, TL > 6 cm, n = 30) were assessed. Variation in regional coliform contamination was analyzed employing a one-way analysis of variance (ANOVA). Results indicated that
the northern part of the lagoon exceeded recommended coliform thresholds for swimming (total coliform concentration (TCC) < 126 most probable number (MPN)) and seafood consumption (TCC < 100 MPN/g), indicating the presence of Escherichia coli. Water quality indices affirmed fecal pollution, except in the southern part of the lagoon. Furthermore, the study found high oyster consumption (76.7 %), elucidating that oysters from the northern part of Negombo Lagoon pose health risks
Originele taal-2English
Artikelnummer116189
Aantal pagina's11
TijdschriftMarine Pollution Bulletin
Volume201
Nummer van het tijdschrift116189
DOI's
StatusPublished - apr 2024

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© 2024 Elsevier Ltd

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