山东南四湖摇蚊幼虫群落结构及其对富营养化过程的指示  

Chironomid Larva Community and Indication to Eutrophication Progress in Lake Nansi,Shandong,China

作　　者：舒凤月孔 亮王 赛迪 訾芳芳[1] 

机构地区：[1]曲阜师范大学山东省南四湖湿地生态与环境保护重点实验室,曲阜273165

出　　处：《应用与环境生物学报》2013年第1期141-146,共6页Chinese Journal of Applied and Environmental Biology

基　　金：国家林业局"948"项目(2012-4-73);山东省教育厅项目;曲阜师范大学项目(XJ200920)资助~~

摘　　要：2010年7月至2011年4月对南四湖摇蚊幼虫群落结构进行了季度调查.共采集到12种摇蚊幼虫,平均密度和生物量分别为(861±701)ind/m2和(6.39±5.12)g/m2.优势种红裸须摇蚊(Propsilocerusi akamusi)和羽摇蚊(Chironomusplumosus)的密度以及生物量分别占总密度和总生物量的97.1%和99.1%,但红裸须摇蚊的密度和生物量显著高于羽摇蚊,分别是羽摇蚊的18.5倍和10.7倍.从水平分布看,红裸须摇蚊在上级湖的密度明显高于下级湖,羽摇蚊则呈全湖性分布,但密度较低.与历史资料相比,南四湖摇蚊幼虫群落发生了显著变化,摇蚊幼虫的平均密度由20世纪80年代初期的88 ind/m2增加到目前的861 ind/m2,优势种由20世纪80年代的羽摇蚊演变为当前的红裸须摇蚊,并且红裸须摇蚊的密度显著升高,这表明南四湖的富营养化趋势加剧.Seasonal variance of community structures ef chironomid larvae was studied in the shallow eutrophic Lake Nansi from July 2010 to April 2011. A total of 12 taxa of chironomid larvae were captured in this survey. The larval density and biomass for the entire lake were （861~701） ind/m2 and （6.39＋5.12） g/m2, respectively. The dominant species were Propsilocerusi akamusi and Chironomus plumosus, which constituted 97.1% and 99.1% of total chironomid density and biomass, but the larval density and biomass ofP. akamusi were 18.5 times and 10.7 times those of C. plumosus. Furthermore, P. akamusi distributed in the Upper Lakes were with high densities, while C. plumosus larvae showed very low densities at all stations. The present and previous data of the density and species composition of chironomid larvae in Lake Nansi were compared, and it was found that the larval density had gradually increased from 88 ind/m~ in 1980＇s to 861 ind/m2 in 2010-2011; the predominant species in this lake seemed to have changed from C. plumosus in 1980＇s to P. akamusi in 2010-2011, in particularly, larval density of P. akamusi has greatly increased, which indicated that eutrophic conditions were aggravated in the lake. Fig 3, Tab 5, Ref 27

关 键 词：摇蚊幼虫 红裸须摇蚊 羽摇蚊 群落结构 富营养化 南四湖 

分 类 号：Q968[生物学—昆虫学]