扁吻鱼保护生物学研究---栖息地饵料、鱼类群落

2003年以来作者对现今扁吻鱼唯一栖息地生物饵料及鱼类群落环境进行了初步研究。结果显示：克孜尔水库有浮游植物7门34种（属），平均密度145.7×104ind•L-1，平均生物量1.225mg•L-1，硅藻密度及生物量均占优势；浮游动物35种（属），平均密度958.6ind•L-1，原生动物占优势；平均生物量1.449mg•L-1，枝角类和桡足类占优势；底栖动物1种（属），平均密度9.1ind•m-2，平均生物量0.08g•m-2；水生植物2种（属）。栖息地分布鱼类19种，土著种10种，外来种9种，隶属2目3科13属，其中鲤科15种，占78.9%，鳅科3种，占15.8%，鱼叚虎鱼科1种，占5.3%。初步探讨了扁吻鱼所面临的生态环境问题。

Research of conservation biology of Aspiorhynchus laticeps(Day)-habitat bait, fish community

The author conducted a preliminary study on the biological bait and fish community environment of the only habitat of Aspiorhynchus laticeps(Day) nowadays since 2003. The results showed that: There were 7 phylum 34 species(genus) of phytoplankton, the average density was 145.7×104ind/L, the average biomass was 1.225mg/L, diatom was dominant on both number and biomass; there were 35 species(genus) of zooplankton, the average density was 958.6ind/L, protozoa was the dominant species, the average biomass was 1.449mg/L, cladocera and copepod were the dominant species; there was 1 species(genus) of zoobenthos, the average density was 9.1ind/m, the average biomass was 0.08g/m2; there were 2 species(genus) of aquatic plant; there were 19 species of fish, it contains 10 species of aboringinal species and 9 species of alien species, and it belongs to 2 order 3 family 13 genus, in which there were Cyprinidae, 15 species which accounted for 78.9%, Triplophysa 3 species which accounted for 15.8%, Gobiidae 1 species which 5.3%. The authors discussed the ecological environment problems of A. laticeps .