成虾发光病病原体的分离鉴定及防治技术研究

Prevention and Treatment of Luminous Disease of Adult Prawns

成虾养殖中也经常发生发光病 ,危害同样十分严重 .研究证明 ,哈维氏弧菌 (Vibroharveyi)也是成虾发光病的主要致病菌 .注射、投喂、创伤、浸泡等几种感染方式都会造成对虾大量死亡 ,但感染速度和发光程度有明显的差别 .侵入虾体内的发光菌的数量对对虾的成活率有明显的影响 .致病菌与幼苗发光病的药物敏感性相似 ,仅对少数药物敏感 ,2种药饵可减少损失率 ,但防治工作应以预防为主 ,综合处理 .

Luminous disease could occur in the cultivation of adult prawns. Vibro harveyi is also a major disease germ which causes luminous disease of adult prawns.Such modes of infection as in jection, feeding,wound and soak might cause mortality of adult prawns in a large scale.But the speed of infection and the extent of luminous are obviously different.The quantity of luminous germs which invade the body of the prawn has obviously affected the survival of prawns.The disease germs of the luminous disease of adult prawns and that of the luminous disease of young prawns are similar in the sensitiveness to medicines.It is sensitive only to few medicine.The two kinds of medicine and bait may decrease the loss rate.But stress ahould be put on the prevention in the preventtion and treament of disease.