方斑东风螺肉壳分离病病因的初步研究

A Preliminary Study on Disease Cause of Separation between Meat and Shell of Babylonia areolaata

螺肉与螺壳分离病是方斑东风螺养殖中的常见病害,主要发生在壳高0.5cm以下的稚、幼螺阶段,严重时可造成螺苗在短时间内大量死亡。本文报道了方斑东风螺中间培育过程中由于养殖水体中混入以婆罗异剑水蚤(Apocyclopsborneoensis)为主的桡足类对稚、幼螺的攻击,导致稚、幼螺受伤部位发生溃疡性病变,进而诱发稚、幼螺肉壳分离疾病发生的镜检检查结果。通过采取杀灭螺池中桡足类的措施后,病情很快得到控制,研究结果验证了桡足类对方斑东风螺稚、幼螺的危害性。

Disease on separation between meat and shell is common disease in process of Babylonia areolaata farming, mainly occurred in the stage of larva and juvenile under shell height of 0.5cm, which resulted in death of larvae /juveniles at large scale in short time. This paper reported the result of inspection under microscope that Apocyclops borpsneoensis as main species of copepods mixed into water in the middle rearing period of Babylonia areolaata attacked the larvae or juveniles and resulted in ulcerative lesion in the injured parts of larvae and juveniles and finally induced separation between meat and shell. The disease was controlled quickly by killing copepods in the pond. The research result verified that the copepod is harmful to larvae and juveniles of Babylonia areolaata.