Constant exposure to environmental concentrations of the antifouling biocide Sea-Nine retards growth and reduces acetylcholinesterase activity in a marine mysid SCIE SCOPUS

Cited 13 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Constant exposure to environmental concentrations of the antifouling biocide Sea-Nine retards growth and reduces acetylcholinesterase activity in a marine mysid
Author(s)
Do, Jeong Wan; Haque, Md. Niamul; Lim, Hyun-Jeong; Min, Byung Hwa; Lee, Do-Hee; Kang, Jung-Hoon; Kim, Moonkoo; Jung, Jee-Hyun; Rhee, Jae-Sung
KIOST Author(s)
Kang, Jung Hoon(강정훈)Kim, Moon Koo(김문구)Jung, Jee Hyun(정지현)
Publication Year
2018-12
Abstract
Sea-Nine (4,5-dichloro-2-n-octyl-4-isothiazoline3-one; DCOIT) antifoulant has been widely used owing to its broad spectrum of biocide activity against major fouling organisms. In this study, several physiological parameters of a marine mysid were analyzed upon exposure to sublethal environmental concentrations (1 and 100 ng L-1) of Sea-Nine in two exposure conditions, intermittent (weekly; once per week) and constant (daily; once per 24 h) exposure, for 4 weeks. In both experimental conditions, growth retardation, acetylcholinesterase (AChE) activity, glutathione S-transferase (GST) activity, and number of newborn juveniles as second generation, together with their survival were measured. Morphometric parameters of total body, antennal scale, exopod, endopod, and telson were significantly retarded by 22%, 14%, 13%, and 24%, respectively, by daily exposure to 100 ng L-1 Sea-Nine for 4 weeks. Significant inhibition of AChE activity was observed at week 4 in the 100 ng L-1 daily Sea-Nine-exposed groups, whereas no significant GST activity was measured at the same experimental conditions. Inhibition of AChE activity would be associated with impairment of cholinergic system and may adversely modulate growth parameters of the mysid. The number of newly hatched juveniles from females that were exposed daily to 100 ng L-1 Sea-Nine was significantly lower than that of the control. Although no significant differences were observed between survival percentages of newborn juveniles for 30 days, mortality (NOEC and LC50) increased in the surviving offspring from the 100 ng L-1-exposed 1st generation of mysids. These findings suggested that constant exposure to Sea-Nine has detrimental effects on the growth parameters of marine mysids with inhibition of AChE activity.
ISSN
0166-445X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/801
DOI
10.1016/j.aquatox.2018.10.019
Bibliographic Citation
AQUATIC TOXICOLOGY, v.205, pp.165 - 173, 2018
Publisher
ELSEVIER SCIENCE BV
Subject
NEOMYSIS-INTEGER; 4,5-DICHLORO-2-N-OCTYL-4-ISOTHIAZOLIN-3-ONE DCOIT; ANTIOXIDANT RESPONSES; ENDOCRINE DISRUPTION; TOXICITY; CRUSTACEAN; PHARMACEUTICALS; REPRODUCTION; COMMUNITIES; EXPRESSION
Keywords
Marine mysids; Sea-Nine; Growth; Survival; Morphometry; Enzyme activity
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
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