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首页> 外文期刊>African Journal of Aquatic Science >Mouthpart deformities in Chironomidae (Diptera) as indicators of heavy metal pollution in northern Lake Victoria, Uganda.
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Mouthpart deformities in Chironomidae (Diptera) as indicators of heavy metal pollution in northern Lake Victoria, Uganda.

机译：Chironomidae（Diptera）的口部畸形是乌干达维多利亚湖北部重金属污染的指标。

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摘要

Due to the absence of appropriate and sensitive tools for monitoring heavy metal pollution in northern Lake Victoria (Uganda), this study investigated mouthpart deformities in chironomid larvae (Diptera) in relation to concentrations of lead, copper, cadmium and zinc in lake sediments, and to dissolved oxygen, pH and conductivity. The variables at two rural reference sites in Hannington Bay and two urban-industrial test sites in Napoleon Gulf and Fielding Bay near Jinja were compared. Of the total number of chironomids examined from the two urban-industrial sites, 4.7% and 3.7% (respectively) were deformed. No deformed chironomids were found at the two reference sites. Chironomid mouthpart deformities correlated with concentrations of copper and zinc among the listed metals, but with none of the physical variables. The presence of deformities in chironomid larvae was a sufficiently sensitive proxy measurement to indicate the presence of low concentrations of heavy metals. The higher incidences of mouthpart deformities observed in the larvae of Chironomus sp. II could make them potential bioindicator organisms for heavy metal pollution.
机译：由于在维多利亚湖北部（乌干达）缺乏适当和敏感的监测重金属污染的工具，因此本研究调查了与湖沉积物中铅，铜，镉和锌的浓度相关的拟幼虫（双翅目）口部畸形。溶解氧，pH和电导率。比较了汉宁顿湾的两个农村参考点和金贾附近的拿破仑湾和菲尔丁湾的两个城市工业测试点的变量。在两个城市工业场所检查的手足动物总数中，分别变形了4.7％和3.7％。在两个参考位点均未发现变形的嵌合体。 Chironomid口器畸形与所列金属中铜和锌的浓度相关，但与物理变量无关。尺虫幼虫中畸形的存在是足够敏感的替代指标，表明存在低浓度的重金属。在 Chironomus sp的幼虫中观察到的口部畸形的发生率较高。 II可能使它们成为重金属污染的潜在生物指示生物。

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