摇蚊幼虫对沉积物中重金属复合污染评估

生态学杂志

摇蚊幼虫对沉积物中重金属复合污染评估

邓鑫^1,2,Vincent PETTIGROVE³,杨小南⁴,李晓军¹,刘宛¹,Kallie TOWSEND³,台培东^1**

(¹ 中国科学院沈阳应用生态研究所，沈阳 110016； ² 中国科学院大学，北京 100049； ³ Research and Technology, Melbourne Water, Melbourne, Victoria 3001)

出版日期:2014-03-10 发布日期:2014-03-10

Evaluation of heavy metal toxicity in sediments using the midge Chironomus tepperi

DENG Xin^1,2, Vincent PETTIGROVE³, YANG Xiao-nan⁴, LI Xiao-jun¹, LIU Wan¹, Kallie TOWSEND³, TAI Pei-dong^1**

(¹Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; ²University of Chinese Academy of Sciences, Beijing 100049, China; ³Research and Technology, Melbourne Water, Melbourne, Victoria 3001, Australia)

Online:2014-03-10 Published:2014-03-10

摘要/Abstract

摘要： 使用采自野外的6组沉积物作为受试沉积物，一龄摇蚊（Chironomus tepperi）幼虫作为受试物种，对摇蚊幼虫分别进行了5 d生长及20 d慢性毒性试验，分别观测了摇蚊幼虫头宽、体长，雄、雌性摇蚊平均羽化时间、摇蚊发育速率、存活率、羽化率、摇蚊性别比例共8项指标与沉积物中污染的响应关系。结果表明，摇蚊体长、存活率及羽化率均受到As、Cu、Zn、Pb、Cd的污染而显著降低(P<0.05)，摇蚊发育速率、雄性摇蚊羽化时间及雌性摇蚊羽化时间显著提前(P<0.05)，摇蚊幼虫头宽与羽化后的雌雄比例与沉积物重金属间不存在显著相关，Cr、Ni、Co与摇蚊生长发育的各指标间并不存在显著相关。在所观测因素中，摇蚊幼虫体长、摇蚊平均羽化用时、羽化率、存活率在测试沉积物质量方面是需要重点考虑的因素。

关键词: 白皮松, 外生菌根真菌, 土壤繁殖体库

Abstract: Six sediment samples were collected from different outfield places. A five-day growth experiment and a twenty-day chronic toxicity experiment with the sediments were conducted with first instar Chironomus tepperi larvae. Head capsule width, body length, average time to male and female adult emergence, growth rate, total survival, emergence rate, and sex ratios were employed to evaluate the effects of contaminants in the sediments on C. tepperi. The results showed that body length, total survival and total emergence rate were significantly inhibited by zinc, copper, arsenic, lead, and cadmium contamination (P<0.05), while time to female adult emergence, time to male adult emergence and growth rate were significantly increased by zinc, copper, arsenic, lead, and cadmium contamination (P<0.05). Head capsule width and sex ratio of C. tepperi were not significantly correlated with metal concentrations in the sediments. The whole eight indicators were not significantly affected by chrome, nickel and cobalt. Among all the factors, body length of C. tepperi larvae, time to adult C. tepperi emergence, emergence rate and total survival rate were important in testing sediment quality.

Key words: Pinus bungeana, soil propagule bank., ectomycorrhizal fungi

邓鑫1,2,Vincent PETTIGROVE3,杨小南4,李晓军1,刘宛1,Kallie TOWSEND3,台培东1**. 摇蚊幼虫对沉积物中重金属复合污染评估[J]. 生态学杂志.

DENG Xin1,2, Vincent PETTIGROVE3, YANG Xiao-nan4, LI Xiao-jun1, LIU Wan1, Kallie TOWSEND3, TAI Pei-dong1**. Evaluation of heavy metal toxicity in sediments using the midge Chironomus tepperi[J]. cje.

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