三角帆蚌病害原因及其防制技术

通过对三角帆蚌在育珠过程中爆发的疾病进行流行病学调查和病理学解剖,结果表明,大面积爆发疾病流行的原因在于不当的养殖方法和植珠插片操作,过量施肥导致水体富营养化则是疾病的诱发因素。建议针对河蚌养殖的水体环境构建一整套ＢＯＤ(生物耗氧量)、Ｎ、Ｐ浓度、ＳＳ(悬浮颗粒)指标、细菌总数、ｐＨ值的检测体系。同时建议改变现有的插片方法,采用注射外套膜表皮细胞培养液的方法进行珍珠培育,以提高三角帆蚌的存活率和珍珠质量。

Causes and Control of Hyriopsis cumingii Disease

In this article,the epidemic diseases of Hyriopsis cumingii during thepearl-growing period were investigated.By the means of pathological anatomy,itwas found that the disease was due to the incorrect breeding-methods and the exces-sively mantle-inserted operation. The main cause of disease was the surplus fertilizertransported into water which brought about the over-nutrition-level.It is suggestedthat the water sample should be examined regularly in aspect of BOD, N, P, SS,pH and the amount of germ; that some new technology can be applied in the man-tle-inserted operation, and that the cultured cell of mantle can be used to the pearl-cultured operation instead of the mantle tissue.