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Article: Occurrence, toxicity and ecological risk of larvicidal oil in the coastal marine ecosystem of Hong Kong

TitleOccurrence, toxicity and ecological risk of larvicidal oil in the coastal marine ecosystem of Hong Kong
Authors
KeywordsLarvicidal oil
Toxicity
Species sensitivity distribution
Risk assessment
Mosquitos
Issue Date2020
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul
Citation
Marine Pollution Bulletin, 2020, v. 156, p. article no. 111178 How to Cite?
AbstractApplication of larvicidal oil (LO) is the most common practice in Hong Kong to control mosquitos, and hence prevent mosquito-borne diseases and protect human health. Globally, this study represented the first comprehensive assessment of toxicity and risk posed by LO to marine organisms. We found concentrations of LO ranged from 0.08 to 0.66 mg/L in coastal seawaters of Hong Kong. Waterborne exposure to water-accommodated fractions of LO resulted in growth inhibition to two microalgal species (72-h EC50: 1.92–2.90 mg/L) and acute mortality to three marine animals (96-h LC50: 3.41–8.10 mg/L). From these toxicity results, a concentration that considered to be hazardous to 5% of species (HC5) was predicted at 1.45 mg/L, while the predicted no-effect concentration was determined to be 0.29 mg/L. The hazard quotient of LO exceeded 1 at 9 out of 15 sites, indicating moderate-to-high ecological risk to exposure of LO in the marine environment of Hong Kong.
Persistent Identifierhttp://hdl.handle.net/10722/284989
ISSN
2023 Impact Factor: 5.3
2023 SCImago Journal Rankings: 1.445
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYEUNG, KWY-
dc.contributor.authorGiesy, JP-
dc.contributor.authorZhou, GJ-
dc.contributor.authorLeung, KMY-
dc.date.accessioned2020-08-07T09:05:17Z-
dc.date.available2020-08-07T09:05:17Z-
dc.date.issued2020-
dc.identifier.citationMarine Pollution Bulletin, 2020, v. 156, p. article no. 111178-
dc.identifier.issn0025-326X-
dc.identifier.urihttp://hdl.handle.net/10722/284989-
dc.description.abstractApplication of larvicidal oil (LO) is the most common practice in Hong Kong to control mosquitos, and hence prevent mosquito-borne diseases and protect human health. Globally, this study represented the first comprehensive assessment of toxicity and risk posed by LO to marine organisms. We found concentrations of LO ranged from 0.08 to 0.66 mg/L in coastal seawaters of Hong Kong. Waterborne exposure to water-accommodated fractions of LO resulted in growth inhibition to two microalgal species (72-h EC50: 1.92–2.90 mg/L) and acute mortality to three marine animals (96-h LC50: 3.41–8.10 mg/L). From these toxicity results, a concentration that considered to be hazardous to 5% of species (HC5) was predicted at 1.45 mg/L, while the predicted no-effect concentration was determined to be 0.29 mg/L. The hazard quotient of LO exceeded 1 at 9 out of 15 sites, indicating moderate-to-high ecological risk to exposure of LO in the marine environment of Hong Kong.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul-
dc.relation.ispartofMarine Pollution Bulletin-
dc.subjectLarvicidal oil-
dc.subjectToxicity-
dc.subjectSpecies sensitivity distribution-
dc.subjectRisk assessment-
dc.subjectMosquitos-
dc.titleOccurrence, toxicity and ecological risk of larvicidal oil in the coastal marine ecosystem of Hong Kong-
dc.typeArticle-
dc.identifier.emailZhou, GJ: zhougj@hku.hk-
dc.identifier.emailLeung, KMY: kmyleung@hku.hk-
dc.identifier.authorityLeung, KMY=rp00733-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.marpolbul.2020.111178-
dc.identifier.pmid32510357-
dc.identifier.scopuseid_2-s2.0-85084405668-
dc.identifier.hkuros311991-
dc.identifier.volume156-
dc.identifier.spagearticle no. 111178-
dc.identifier.epagearticle no. 111178-
dc.identifier.isiWOS:000539160000053-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0025-326X-

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