摇蚊幼虫对沉积物中重金属复合污染评估.pdf

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1、生态学杂志ChineseJournalofEcology2014，33(3):680－686DOI:10.13292/j.1000-4890.2014.0058*摇蚊幼虫对沉积物中重金属复合污染评估1，23411邓鑫VincentPETTIGＲOVE杨小南李晓军刘宛31＊＊KallieTOWSEND台培东123(中国科学院沈阳应用生态研究所，沈阳110016;中国科学院大学，北京100049;ＲesearchandTechnology，MelbourneWater，Melbourne，Victoria3001)摘要使用采自野外的6组沉积物作为受

2、试沉积物，一龄摇蚊(Chironomustepperi)幼虫作为受试物种，对摇蚊幼虫分别进行了5d生长及20d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

3、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。关键词摇蚊幼虫;沉积物;金属污染;生态响应中图分类号TG146．4文献标识码A文章编号1000－4890(2014)3－0680－07EvaluationofheavymetaltoxicityinsedimentsusingthemidgeChironomustepperi．DENG1，23411Xin，VincentPETTIGＲOVE，YANGXiao-nan，LIXiao-jun，LIUWan，Kallie31＊＊1TOWSEND

4、，TAIPei-dong(InstituteofAppliedEcology，ChineseAcademyofSciences，Shen-2yang110016，China;UniversityofChineseAcademyofSciences，Beijing100049，China;3ＲesearchandTechnology，MelbourneWater，Melbourne，Victoria3001，Australia)．ChineseJour-nalofEcology，2014，33(3):680－686．Abstract:Sixsed

5、imentsampleswerecollectedfromdifferentoutfieldplaces．Afive-daygrowthexperimentandatwenty-daychronictoxicityexperimentwiththesedimentswereconductedwithfirstinstarChironomustepperilarvae．Headcapsulewidth，bodylength，averagetimetomaleandfemaleadultemergence，growthrate，totalsurvi

6、val，emergencerate，andsexratioswereem-ployedtoevaluatetheeffectsofcontaminantsinthesedimentsonC．tepperi．Theresultsshowedthatbodylength，totalsurvivalandtotalemergencerateweresignificantlyinhibitedbyzinc，cop-per，arsenic，lead，andcadmiumcontamination(P＜0．05)，whiletimetofemaleadul

7、temer-gence，timetomaleadultemergenceandgrowthrateweresignificantlyincreasedbyzinc，cop-per，arsenic，lead，andcadmiumcontamination(P＜0．05)．HeadcapsulewidthandsexratioofC．tepperiwerenotsignificantlycorrelatedwithmetalconcentrationsinthesediments．Thewholeeightindicatorswerenotsign

8、ificantlyaffectedbychrome，nickelandcobalt．Amongallthefactors，bodylengthofC．