黑河国家级自然保护区秦岭细鳞鲑主要饵料生物——拉氏鱥种群特征及其季节变化
Population Characteristics and Seasonal Variation of Brachymystax lenok tsinlingensis ’s Main Bait Organism Lagowskiella lagowskii in National Nature Reserves of Rare Aquatic Wildlife of Heihe River

为了明确黑河珍稀水生野生动物国家级自然保护区内秦岭细鳞鲑的主要饵料生物——拉氏鱥的种群特征和季节变化规律，采取电赶以及布设小型粘网的方式进行拉氏鱥标本采集和基础数据收集。研究结果显示，共捕获拉氏鱥795尾，拉氏鱥的资源量呈8月>4月>12月的特征。3次采样中，所有采样点溪流中都发现拉氏鱥，其体型较小但数量较多。
Lagowskiella lagowskii is the main bait organism for Brachymystax lenok tsinlingensis in National Natural Reserves of Rare Aquatic Wildlife of Heihe River, this paper is to clarify the population characteristics and seasonal variation of Lagowskiella lagowskii . We mainly drived by electricity and set up small fishing nets to carry out the specimen and basic data collection. The resulted showed that the total amount of Lagowskiella lagowskii was 795.As the resource, the largest quantity of Lagowskiella lagowskii was in August, and the quantity in April was more than that in December. In the three samples, Lagowskiella lagowskii were found in all the sampling points, they were smaller in body but were more in number.