Induction of mouthpart deformities in chironomid larvae exposed to contaminated sediments

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• 作者：Alessandra Di Veroli^a ; Enzo Goretti^a ; ^{benthos@unipg.it} ; Miriam Le蠈n Paumen^b ; Michiel H.S. Kraak^b ; Wim Admiraal^b
• 关键词：Chironomus riparius ; Mentum deformities ; Heavy metals ; PACs ; Contaminated sediment
• 刊名：Environmental Pollution
• 出版年：2012
• 期刊代码：28_02697491
• 类别：env
• 出版时间：July, 2012
• 卷：166
• 期：Complete
• 页码：212-217
• 文件大小：315 K

摘要

The aim of the present study was to improve the cause-effect relationship between toxicant exposure and chironomid mouthpart deformities, by linking induction of mouthpart deformities to contaminated field sediments, metal mixtures and a mutagenic polycyclic aromatic compound metabolite (acridone). Mouthpart deformities in Chironomus riparius larvae were induced by both the heavy metal mixture and by acridone. A clear correlation between metal concentrations in the sediment and deformities incidence was only observed when the contaminated field sediments were left out of the analysis, probably because these natural sediments contained other toxic compounds, which could be responsible for a higher incidence of deformities than predicted by the measured metal concentrations only. The present study clearly improved the cause-effect relationship between toxicant exposure and the induction of mouthpart deformities. It is concluded that the incidence of mouthpart deformities may better reflect the potential toxicity of contaminated sediments than chemical analysis.