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2007年4月至2008年9月对乌伦古湖153尾白斑狗鱼,进行食性研究。结果表明,白斑狗鱼的食物组成包括池沼公鱼、湖拟鲤、东方欧鳊、银鲫、贝加尔雅罗鱼、粘鲈、麦穗鱼、尖鳍鮈、北方花鳅、北方须鳅、中华绒螯蟹、摇蚊幼虫、水生昆虫共12种饵料生物,主要以池沼公鱼(IRI=88.44%)、湖拟鲤(IRI=6.66%)和银鲫(IRI%=2.57%)为主。白斑狗鱼除繁殖期外,其他月份摄食率都很高,繁殖期过后5月中旬摄食率达到65%,8月份达到68%,冬季封冰下达到66.7%。白斑狗鱼平均饱满指数变化较大,其变化幅度在0.0016～0.2286之间。Shannon-Wiener多样性指数H′5月份最小为0.5128,8月份最大为1.9863。Pielou均匀度指数J′5月份最小为0.4668,8月份最大为0.7993。8月份白斑狗鱼食物Pielou均匀度指数J′均高于5月份。
From April 2007 to September 2008, 153 species of Pisces were collected from Wulungu Lake for feeding study. The results showed that the food composition of the Pomacea fish include the marsh, the lake carp, the Eastern European crab, the silver crucian carp, the Baikal gurnard, the perch, the spike fish, the tip fin, the northern loach, the northern loach, Eriocheir sinensis, chironomid larvae and aquatic insects were mainly bait organisms, which were mainly composed of pond marsh (IRI = 88.44%), lake carp (IRI = 6.66%) and silver crucian carp (IRI% = 2.57%). In addition to the breeding season, Porphyra fishes feed rates are high in other months, feeding rate reached 65% in mid-May after breeding season, 68% in August and 66.7% in winter ice closure. The average plump index of Porphyra varied significantly, with a range of 0.0016 ~ 0.2286. Shannon-Wiener diversity index H’5 month-on-month to 0. 5128, the largest in August to 1.9863. Pielou evenness index J’5 May was 0.4668, the largest in August was 0.7993. August Porkfish food Pielou evenness index J ’was higher than in May.