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

Li, Yan; Wang, Wen‐Xiong; Wang, Minghua

doi:10.1038/s41598-017-00423-1

Cited by 32 publications

(37 citation statements)

References 65 publications

(82 reference statements)

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“…On the other hand, acidification alone acted as an antagonistic factor and hampered THg bioaccumulation (and, thus, facilitated its elimination) in the three studied tissues. This result was consistent with recent studies [26,71]. Nonetheless, literature suggests that a decrease in seawater pH facilitates Hg accumulation, due to Hg+ competition with H+, limiting its sequestration and leaving more Hg for uptake [7].…”

Section: Mercury Bioaccumulation and Elimination In Tissues With Climsupporting

confidence: 93%

Mercury in Juvenile Solea senegalensis: Linking Bioaccumulation, Seafood Safety, and Neuro-Oxidative Responses under Climate Change-Related Stressors

et al. 2020

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Mercury (Hg) is globally recognized as a persistent chemical contaminant that accumulates in marine biota, thus constituting an ecological hazard, as well as a health risk to seafood consumers. Climate change-related stressors may influence the bioaccumulation, detoxification, and toxicity of chemical contaminants, such as Hg. Yet, the potential interactions between environmental stressors and contaminants, as well as their impacts on marine organisms and seafood safety, are still unclear. Hence, the aim of this work was to assess the bioaccumulation of Hg and neuro-oxidative responses on the commercial flat fish species Solea senegalensis (muscle, liver, and brain) co-exposed to dietary Hg in its most toxic form (i.e., MeHg), seawater warming (ΔT°C = +4 °C), and acidification (pCO2 = +1000 µatm, equivalent to ΔpH = −0.4 units). In general, fish liver exhibited the highest Hg concentration, followed by brain and muscle. Warming enhanced Hg bioaccumulation, whereas acidification decreased this element’s levels. Neuro-oxidative responses to stressors were affected by both climate change-related stressors and Hg dietary exposure. Hazard quotient (HQ) estimations evidenced that human exposure to Hg through the consumption of fish species may be aggravated in tomorrow’s ocean, thus raising concerns from the seafood safety perspective.

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Section: Mercury Bioaccumulation and Elimination In Tissues With Climsupporting

confidence: 93%

Mercury in Juvenile Solea senegalensis: Linking Bioaccumulation, Seafood Safety, and Neuro-Oxidative Responses under Climate Change-Related Stressors

et al. 2020

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“…Reduced growth and skeletal changes were associated with a reallocation of resources to maintain reproduction. For Tigriopus japonicus , pH 7.1 had no effect on hatching in a cross generation study (Kita, Kikkawa, Asai, & Ishimatsu, ) or on embryo survival, development and larval production in a multigeneration study (Li, Wang, & Wang, ).…”

Section: Cross Generation Global Change Studies Of Marine Invertebratesmentioning

confidence: 99%

Limitations of cross‐ and multigenerational plasticity for marine invertebrates faced with global climate change

Byrne

Foo

Ross

et al. 2019

Global Change Biology

120

109

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Although cross generation (CGP) and multigenerational (MGP) plasticity have been identified as mechanisms of acclimation to global change, the weight of evidence indicates that parental conditioning over generations is not a panacea to rescue stress sensitivity in offspring. For many species, there were no benefits of parental conditioning. Even when improved performance was observed, this waned over time within a generation or across generations and fitness declined. CGP and MGP studies identified resilient species with stress tolerant genotypes in wild populations and selected family lines. Several bivalves possess favourable stress tolerance and phenotypically plastic traits potentially associated with genetic adaptation to life in habitats where they routinely experience temperature and/or acidification stress. These traits will be important to help 'climate proof' shellfish ventures. Species that are naturally stress tolerant and those that naturally experience a broad range of environmental conditions are good candidates to provide insights into the physiological and molecular mechanisms involved in CGP and MGP. It is challenging to conduct ecologically relevant global change experiments over the long times commensurate with the pace of changing climate. As a result, many studies present stressors in a shock-type exposure at rates much faster than projected scenarios. With more gradual stressor introduction over longer experimental durations and in context with conditions species are currently acclimatized and/or adapted to, the outcomes for sensitive species might differ. We highlight the importance to understand primordial germ cell development and the timing of gametogenesis with respect to stressor exposure. Although multigenerational exposure to global change stressors currently appears limited as a universal tool to rescue species in the face of changing climate, natural proxies of future conditions (upwelling zones, CO 2 vents, naturally warm habitats) show that phenotypic adjustment and/or beneficial genetic selection is possible for some species, indicating complex plasticity-adaptation interactions. K E Y W O R D Sadaptation, habitat warming, ocean acidification, phenotypic plasticity, stress resilience | 81 BYRNE Et al.

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“…缓解毒性 [45] (图2中过程⑥). 长期暴露时, 在OA条件下金属硫蛋白和铁蛋白表达上调, 增强了血细胞的金属结合能力 [47] , 通过蛋白与金属螯合缓解毒性 [46,52,53] (图2中过程⑦).…”

Section: 然而由于金属在酸性环境更易被生物摄取对于一些背景浓度高的金属或者不参与生命活动的金属unclassified

Environmental behaviors and toxicity of heavy metals and metallic nanoparticles to marine organisms under ocean acidification

Yin

Dai

et al. 2018

Sci. Sin.-Chim

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Since industrial revolution, anthropogenic carbon dioxides releasing into the atmosphere are absorbed by the global oceans, which leads to measurable decrease of surface seawater pH and carbonate ion concentration ([CO 3 2− ]), thus causing the acidification of global ocean. Besides direct threatening the stability of marine ecosystems, ocean acidification (OA) could also change the environmental processes of marine pollutants, thus indirectly influencing their toxicity to marine organisms. By selecting heavy metals and metallic nanoparticles (MNPs) as the model marine pollutants, this review deeply summarizes the dominant mechanisms on species changes of heavy metals, and the dissolution, dispersion and transport of MNPs based on the causes of OA. The effects of OA-induced environmental process alteration on the toxicity of heavy metal and MNPs to marine organisms at different levels are explored. The differences among the observed toxicological data are analyzed. Finally, the key research challenges and future directions on the toxicity of OA and coexisting pollutants are provided.

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

Cited by 32 publications

References 65 publications

Mercury in Juvenile Solea senegalensis: Linking Bioaccumulation, Seafood Safety, and Neuro-Oxidative Responses under Climate Change-Related Stressors

Mercury in Juvenile Solea senegalensis: Linking Bioaccumulation, Seafood Safety, and Neuro-Oxidative Responses under Climate Change-Related Stressors

Limitations of cross‐ and multigenerational plasticity for marine invertebrates faced with global climate change

Environmental behaviors and toxicity of heavy metals and metallic nanoparticles to marine organisms under ocean acidification

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