Toxicity of cadmium and lead on tropical midge larvae,Chironomus kiiensis Tokunaga and Chironomus javanus Kieffer(Diptera:Chironomidae)  

作　　者：Warrin Ebau Che Salmah Md Rawi Zubir Din Salman Abdo Al-Shami 

机构地区：[1]School of Biological Sciences,Universiti Sains Malaysia

出　　处：《Asian Pacific Journal of Tropical Biomedicine》2012年第8期631-634,共4页亚太热带生物医学杂志（英文版）

基　　金：funded by Ministry of Science,Technology and Innovation(MOSTI) under the National Science Fellowship(2006-2008)

摘　　要：Objective:To investigate the acute toxicity of cadmium and lead on larvae of two tropical Chironomid species,Chironomus kiiensis(C.kiiensis) Tokunaga and Chironomus javanus(C. javanus) Kieffer.Methods:Different larval instars(first-fourth) were exposed using a sialic non-replacement testing procedures to various concentrations of cadmium and lead.Results: In general,younger larvae(first and second instars) of both species were more sensitive to both metals than older larvae(third and forth instars).The toxic effects of the metals on C.kiiensis and C. javanus were influenced by the age of the larvae(first to fourth instars),types of metals(cadmium or lead) and duration of larval exposure(24,48,72 and 96 h) to the metals.Conclusions:Cadmium was more toxic to the chironomids than lead and C.javanus was significantly more sensitive to both metals than C.kiiensis(P<0.05).Objective:To investigate the acute toxicity of cadmium and lead on larvae of two tropical Chironomid species,Chironomus kiiensis(C.kiiensis) Tokunaga and Chironomus javanus(C. javanus) Kieffer.Methods:Different larval instars(first-fourth) were exposed using a sialic non-replacement testing procedures to various concentrations of cadmium and lead.Results: In general,younger larvae(first and second instars) of both species were more sensitive to both metals than older larvae(third and forth instars).The toxic effects of the metals on C.kiiensis and C. javanus were influenced by the age of the larvae(first to fourth instars),types of metals(cadmium or lead) and duration of larval exposure(24,48,72 and 96 h) to the metals.Conclusions:Cadmium was more toxic to the chironomids than lead and C.javanus was significantly more sensitive to both metals than C.kiiensis(P<0.05).

关 键 词：CHIRONOMUS kiiensis CHIRONOMUS javanus Acute TOXICITY LEAD CADMIUM 

分 类 号：X174[环境科学与工程—环境科学]