Heavy metal accumulation across different growth stages of Perna viridis, cultured in a natural habitat and human health risk assessment

IF 8 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2025-07-30 DOI:10.1016/j.scitotenv.2025.180157

D. Vidyalakshmi , Aneena Yesudas , Gopika Sivan , E. Akhil Prakash , P. Priyaja

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Abstract

The green mussel, Perna viridis is renowned for its nutritional profile and as an effective bio-accumulator, making it a valuable indicator of pollution. This study examined the bioaccumulation of heavy metals in P. viridis from spat to adult stage over one year period in a natural mussel bed. Monthly analysis of metals such as Cu, Ni, Mn, Zn, Pb, Cd, Cr, Co, As, and Se was conducted in water, sediment and different body parts (gut, gill, soft tissue, byssus thread and shell) of P. viridis. The impact of monsoonal influence on the uptake of heavy metals and risk assessments were also conducted. Metals like Zn, Cu, Mn, Ni, and Cr were detected throughout the culture period. The concentration of the metals increased from the spat to the adult stage. The gut tissues exhibited the highest concentrations followed by the gills and soft tissues. The shell and byssus thread showed lower concentrations compared to soft tissues. All metals exhibited peak concentrations during the pre-monsoon period, decreased during the monsoon and again increased during the post-monsoon season highlighting a strong seasonal influence. The human risk assessment indicated that the heavy metal concentrations were within safe limits, posing minimal risk of lethal effects.

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自然生境绿滨带鱼不同生长阶段重金属积累及人体健康风险评价

绿色贻贝，Perna viridis以其营养价值和有效的生物蓄能器而闻名，使其成为有价值的污染指标。本研究在一个天然贻贝床上，研究了一年多的时间里，绿藻从贝口到成虫阶段重金属在绿藻体内的生物积累。每月对绿颡鱼水体、沉积物及不同身体部位（肠、鳃、软组织、足丝、壳）中的Cu、Ni、Mn、Zn、Pb、Cd、Cr、Co、as、Se等金属进行分析。还进行了季风影响对重金属吸收的影响和风险评估。在整个培养过程中检测到锌、铜、锰、镍和铬等金属。金属的浓度从幼虫到成虫阶段逐渐增加。肠道组织的浓度最高，其次是鳃和软组织。与软组织相比，壳和足丝的浓度较低。所有金属的浓度在季风前出现峰值，在季风期间下降，在季风后再次增加，突出了强烈的季节性影响。人体风险评估表明，重金属浓度在安全范围内，造成致命影响的风险最小。

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.