秦岭地区泥鳅生物学特性及人工繁殖技术研究

On Biological Characteristtics and Technology of Artificial Reproduction of Loach in Qingling Mountain

泥鳅是珍禽朱的主要食物之一 ,开展人工繁殖技术研究 ,意义重大 .泥鳅一冬龄性成熟 ,耐低氧 ,最适生长水温 2 4℃～ 2 7℃ ,繁殖水温不得低于 18℃ ,参加繁殖试验的亲鱼要求体重雌性 2 0 g左右 ,雄性不得低于 12g ,雄性泥鳅一般体小 ,胸鳍末端较尖 .雌性泥鳅体大 ,胸鳍末端展开呈扇形 ,性腺发育至Ⅳ—Ⅴ期 ,可注射适量LRHA - 2 和HCG ,雌雄性等量 ,♀∶♂ =1∶2 (3 ) .水族箱内催产受精 ,水泥池中孵化网内孵化 ,效果较好 .

Loach (Misgurnus anguillicaudatus) is one of main feeds of the Crested Ibis (Nipponia Nippon), and from this point, the loach artificial reproduction has important meaning. Locah sex can mature in 1 winter year. It can endure low oxygen, its optimum growing water temperament is 24～27℃ and its reproductive water temperament can not be allowed beneath 18℃. In the reproduction the female loach must weigh about 20g,and male one should more than 12g. The male loach is generally small, the terminal of pectoral fin more acuate; the female is generally big, the terminal of pectoral fin outspread fan-shaped. When sex gland develop to Ⅳ—Ⅴ period, the loach can be injected appropriate volume of LAH (A-2) and HCG, the amount of female and male is alike. ♀∶♂=1∶2(3). Hastening parturition and impregnating in aquaria, incubating in the incubation net in cement pool, the reproductive effect is better.