养殖泥螺生态习性研究

Study on Ecological Habit of Mud Slug, Bullacta exarata

20 0 0年 3～ 5月在舟山市、宁波市的泥螺养殖滩面观察研究养殖泥螺的生态习性 ,并进行几种环境因子对泥螺生存影响的试验 .结果表明 ,养殖泥螺的生存温度为 0～ 30℃ ;适宜比重为 1.0 0 0～ 1.0 2 0 ;幼螺的适宜比重为 1.0 10～ 1.0 2 5 ;泥螺适宜海水酸碱度为 3.74～ 9.0 9;干露死亡时的体重消耗率为 6 8.5 %～ 6 9.7% ,幼螺干露死亡时的平均体重消耗率为 74 .6 % ;底质条件对泥螺的个体活力无明显影响 .本文还细述了泥螺的生活习性 ,讨论了泥螺幼螺比重适宜范围与泥螺养殖、底质条件与泥螺品质的关系 .

From March to May 2000, the ecological habit of mud slug, Bullacta exarata, in the breed aquatics beach of Zhoushan city and Ningbo city had been observed. According to the experimental of some circumstances factors affect the survival of mud slug, the suitable temperature for breed aquatics mud slug is 0～30 ℃,the suitable sea specific gravity is 1.000～1.020, suitable sea specific gravity for young slug is 1.010～1.025. In the sea water pH value is 3.74～9.09 for its existence. The rate of the body weight loss at death is 68.5%～69.7% after exposure. The average rate of the body weight loss of young slug after death is 74.6%. The subsoil of beach is not affected the vigor of Bullacta exarata. The habit of mud slug is described in detail. The relations of suitable sea specific gravity for young slug and breed aquatics, the subsoil of beach and quality of mud slug are also discussed.