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本文报道了蛤蟆通水库的乌鳢生物学特性和讨论了乌鳢在渔业生产发展中的作用。捕捞群体中平均体长21.4—66cm,体重118—3510g,体重体长关系式为logW=3.0466lonsL1.9666。3+龄达到性成熟,雌雄性比为1:0.97;个体繁殖力Y(千粒鱼卵)与体长L(cm)相关关系式为Y=2.5974L-78.9183。5月下旬一6月下旬在水库岸边有水草处筑巢产卵,卵为浮性。水温23—25℃时,受精卵约3天孵出仔鱼。
This article reports on the biological characteristics of the black-necked 鳢 通 Tong reservoir and discusses the role of 鳢 鳢 in the development of fisheries. The average body length of the fishing group was 21.4-66cm and the body weight was 118-3510g. The relationship between body weight and body weight was logW = 3.0466lonsL1.9666.3 + The age at maturity reached sexual maturity with a ratio of male to female of 1: 0.97. Y (1000 fish eggs) and the body length L (cm) the correlation equation Y = 2.5974L-78.9183.5 late in late June in late June in a reservoir of aquatic plants Nest nest eggs, floating eggs Sex. When the water temperature is 23-25 ℃, the larvae hatch larvae for about 3 days.