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中文摘要：
2005年6-7月在抚仙湖共采集到摇蚊科幼虫5属6种，其中花纹前突摇蚊和羽摇蚊为优势种，两者的相对密度之和达94．9％，相对生物量之和达97．5％，其现存量基本代表了抚仙湖中摇蚊幼虫的现存量．全湖摇蚊幼虫平均密度为（275±333）ind·m^-2，平均生物量为（0．642±0．763）g·m^-2．花纹前突摇蚊为全湖性分布，羽摇蚊主要分布在明星鱼洞以南湖区，其他种类为局部性分布．小突摇蚊为典型的深水贫营养型种类，其分布的平均水深达107．2m．抚仙湖摇蚊幼虫密度分布与水深呈极显著正相关（P〈0．001），与底质和水草的关系为沙砾石底〈沙泥底〈细泥底；水草区〈非水草区．与1980年前后的调查资料相比，摇蚊幼虫的出现率和现存量显著增加，并出现了典型富营养型的指示种羽摇蚊，表明抚仙湖水体的营养水平在提高．
英文摘要：
A field survey was made on the chironomid larvae in Fuxian Lake of Yunnan Province from June to July 2005. A total of 6 species belonging to 5 genera were collected, among which, Procladius choreus and Chironomous plumosus were the dominant species, with a sum of their relative density and of relative biomass being 94. 9% and 97.5% , respectively. The average density of chironomid larvae in the lake was （275±333） ind· m^-2, and the average biomass was （0. 642± 0. 763） g·m^-2 P. choreus distributed all over the lake, C. plumosus mainly distributed in the water area at the south of Mingxingyudong, while other species distributed locally. Micropsectra sp. , a typical species distributing in deep oligotrophic water, had an average distribution water depth of 107.2 m. The density of chironomid larvae had a significant positive correlation with water depth, and increased in the sequences of sand or gravel bottom 〈 sand bottom 〈 mud bottom, and submerged macrophyte area 〈 no submerged macrophyte area. Compared with the survey data around 1980, the occurrence frequency and standing stock of chironomid larvae increased greatly, and the indicator species C. plumosus for eutrophic water appeared, indicating that the nutritional level of Fuxian Lake was being improved.
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