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本文报道了达赉湖的餐条鱼生物学,内容包括年龄和生长、食性、繁殖、群体结构及渔业利用。达赉湖的 条鱼一龄平均体长(到尾叉的体长,后同)90毫米,体重8.5克;二龄体长102毫米,体重12.9克;三龄体长109毫米,体重15.4克;四龄体长125毫米,体重184克;五龄体长156毫米,体重23.35克。体长体重关系式:W=0.0310L2.5171。是以浮游动物为主要饵料的杂食性鱼类。一龄即达性成熟;性比为1.0♀:1.36♂;个体繁殖力3552~16420粒,平均9944粒。6~7月在湖的岸边产卵,卵属粘性。群体由1~5个龄组组成,1200尾样品平均年龄为2.65;80.1~100毫米体长组的个体为主要渔获对象,占整个渔获物的75.5%,条鱼目前是这赉湖第一位的经济鱼类,90~92年条鱼平均产量为828万公斤,占总鱼产量的90.2%。
This paper reports on the biology of noodle fish in Dalai Lake, including age and growth, feeding habits, reproduction, population structure and fishery utilization. Dalai Lake fish average length of the first-year-old body (to tail length, the same) 90 mm, weight 8.5 grams; second body length 102 mm, weight 12.9 grams; body length 109 mm , Weighing 15.4 grams; four-year-old body length of 125 mm, weighing 184 grams; fifth-year body length of 156 mm, weighing 23.35 grams. Body length and weight relationship: W = 0.0310L2.5171. Is a zooplankton as the main diet of omnivorous fish. Age that is sexual maturity; sex ratio of 1.0 ♀: 1.36 ♂; individual fertility 3552 ~ 16,420 tablets, an average of 9944 tablets. June to July spawning on the shore of the lake, egg is sticky. The population consisted of 1 to 5 age groups, with an average age of 2.65 for the 1,200 samples. The individuals of 80.1 to 100 mm body length were the main catches, accounting for 75.5% of the total catches, Currently, it is the first economic fish in this lagoon. The average production of fish in 1990-92 is 8.28 million kilograms, accounting for 90.2% of the total fish production.