Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification

Abstract Ocean acidification (OA) may potentially modify the responses of aquatic organisms to other environmental stressors including metals. In this study, we investigated the effects of near-future OA (pCO2 1000 μatm) and mercury (Hg) on the development and reproduction of marine copepod Tigriopu...

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Autores principales:	Yan Li, Wen-Xiong Wang, Minghua Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fa9b3c7920734deb9a072e93d8038686
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spelling	oai:doaj.org-article:fa9b3c7920734deb9a072e93d80386862021-12-02T16:08:10ZAlleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification10.1038/s41598-017-00423-12045-2322https://doaj.org/article/fa9b3c7920734deb9a072e93d80386862017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00423-1https://doaj.org/toc/2045-2322Abstract Ocean acidification (OA) may potentially modify the responses of aquatic organisms to other environmental stressors including metals. In this study, we investigated the effects of near-future OA (pCO2 1000 μatm) and mercury (Hg) on the development and reproduction of marine copepod Tigriopus japonicus under multigenerational life-cycle exposure. Metal accumulation as well as seven life history traits (survival rate, sex ratio, developmental time from nauplius to copepodite, developmental time from nauplius to adult, number of clutches, number of nauplii/clutch and fecundity) was quantified for each generation. Hg exposure alone evidently suppressed the number of nauplii/clutch, whereas single OA exposure negligibly affected the seven traits of copepods. However, OA exposure significantly alleviated the Hg inhibitory effects on number of nauplii/clutch and fecundity, which could be explained by the reduced Hg accumulation under OA. Such combined exposure also significantly shortened the development time. Thus, in contrast to earlier findings for other toxic metals, this study demonstrated that OA potentially mitigated the Hg toxicity to some important life traits in marine copepods during multigenerational exposure.Yan LiWen-Xiong WangMinghua WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yan Li Wen-Xiong Wang Minghua Wang Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
description	Abstract Ocean acidification (OA) may potentially modify the responses of aquatic organisms to other environmental stressors including metals. In this study, we investigated the effects of near-future OA (pCO2 1000 μatm) and mercury (Hg) on the development and reproduction of marine copepod Tigriopus japonicus under multigenerational life-cycle exposure. Metal accumulation as well as seven life history traits (survival rate, sex ratio, developmental time from nauplius to copepodite, developmental time from nauplius to adult, number of clutches, number of nauplii/clutch and fecundity) was quantified for each generation. Hg exposure alone evidently suppressed the number of nauplii/clutch, whereas single OA exposure negligibly affected the seven traits of copepods. However, OA exposure significantly alleviated the Hg inhibitory effects on number of nauplii/clutch and fecundity, which could be explained by the reduced Hg accumulation under OA. Such combined exposure also significantly shortened the development time. Thus, in contrast to earlier findings for other toxic metals, this study demonstrated that OA potentially mitigated the Hg toxicity to some important life traits in marine copepods during multigenerational exposure.
format	article
author	Yan Li Wen-Xiong Wang Minghua Wang
author_facet	Yan Li Wen-Xiong Wang Minghua Wang
author_sort	Yan Li
title	Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
title_short	Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
title_full	Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
title_fullStr	Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
title_full_unstemmed	Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
title_sort	alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/fa9b3c7920734deb9a072e93d8038686
work_keys_str_mv	AT yanli alleviationofmercurytoxicitytoamarinecopepodundermultigenerationalexposurebyoceanacidification AT wenxiongwang alleviationofmercurytoxicitytoamarinecopepodundermultigenerationalexposurebyoceanacidification AT minghuawang alleviationofmercurytoxicitytoamarinecopepodundermultigenerationalexposurebyoceanacidification
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Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification

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