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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Assessment of heavy metal toxicity in four species of freshwater ciliates (Spirotrichea: Ciliophora) from Delhi, India
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Assessment of heavy metal toxicity in four species of freshwater ciliates (Spirotrichea: Ciliophora) from Delhi, India

机译：德里德里德里淡水纤毛菌（Spirichea：Ciliophora）中重金属毒性评估

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In vitro laboratory experiments were conducted to determine the toxicity (per cent survival and LC50) of essential and non-essential heavy metals (cadmium, copper, nickel, lead and zinc) in four spirotrich ciliates: Euplotes sp., Notohymena sp., Pseudourostyla sp. and Tetmemena sp. isolated from three different freshwater ecosystems in the Delhi region, India. The toxicity of the heavy metals was found to vary among the different ciliates. Copper was most toxic (24 h-LC50 value ranged between 0.125 and 0.74 mg/l) and zinc was least toxic (24 h LC50 value ranged between 46.98 and 144.32 mg/l) to each of the ciliates. Of the four ciliates, Notohymena sp. had the highest tolerance limit to three heavy metals (Cu, Cd and Pb) out of the five tested. This study shows the high potentiality of using freshwater ciliates for monitoring the intensity and potency of ecological damage caused by heavy metals in aquatic ecosystems.
机译：进行体外实验室实验，以确定四种刺激纤毛的必需和非必需的重金属（镉，铜，镍，铅和锌）的毒性（百分之百分之）（镉，铜，镍，铅和锌）：Euplotes sp。，Notohymena sp.，pseudourostyla sp。 和tetmemena sp。 从三个不同淡水生态系统隔离在德里地区，印度。 发现重金属的毒性在不同的纤毛部分之间变化。 铜最大毒性（24h-LC50值，范围为0.125和0.74mg / L），锌含有最小毒性（24小时LC50值，间距为46.98和144.32mg / L）。 四个纤毛，Notohymena sp。 在五个测试中，将具有最高耐受性限制为三种重金属（Cu，Cd和Pb）。 本研究表明，使用淡水纤维的高潜力，用于监测水生生态系统中重金属造成的生态损伤的强度和效力。

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