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三角帆蚌,隶属于瓣鳃纲,真瓣鳃目,蚌科,帆蚌属,是中国特有的优质淡水育珠蚌。三角帆所产的珍珠产量佳,珠质细腻、光滑、色泽鲜艳、形状较圆,但珍珠生长比较缓慢。池蝶蚌与三角帆蚌同属帆蚌属(日本称为池蝶蚌属),是中国大陆近年来从日本、台湾引进的优良珠贝类。与三角帆蚌相比,池蝶蚌具有壳、珍珠层、外套膜较厚,珍珠质分泌能力强等优点。 相似文献
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三角帆蚌蚌瘟病的防治技术 总被引:1,自引:0,他引:1
三角帆蚌蚌瘟病的防治技术潘炳炎,文仲芬(淡水渔业研究中心无锡214081)三角帆蚌是我国淡水人工育珠中的优良品种,所产珍珠具有光泽好、珠粒圆的特点,但作为育珠用的三角帆蚌,在生产过程中因病害而大批死亡,给育珠生产造成重大损失,特别是三角帆蚌的蚌瘟病,... 相似文献
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三角帆蚌是我国淡水人工育珠中的优良品种,所产珍珠具有光泽好、珠粒圆的特点,但作为育珠用的三角帆蚌,在生产过程中因病害而大批死亡,给育珠生产造成重大损失,特别是三角帆蚌的蚌瘟病,仅今年江浙沪一带都时有发生,尤其是浙江金华,仅在5~6两个月,一场罕见的蚌瘟袭击了该市,估计造成直接经济损失已达3亿元之巨。群众称之谓三角帆蚌瘟病,其实是 相似文献
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目前,一些养蚌育珠单位和个人为节约生产成本,提高经济效益,多采用“池底养小蚌,水面育珠,水中养鱼”的养殖方法。但往往由于经验不足,造成底养三角小蚌生长速度不快,养殖效果差。1 小蚌生长缓慢的原因1.1 池塘底质不好 三角帆蚌一般生活在江河、湖沼、池塘水底,利用斧足挖掘泥沙,营底栖生活,但在小蚌阶段(壳长2~3厘米),其生活能力较差,运动能力不强,这时如将小蚌撒播在淤泥太厚、粘性土壤或底质坚硬的池 相似文献
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三角帆蚌(Hyriopsis cumingii)为中国特有种。在河北、山东、安徽、湖南、湖北、江苏、浙江、江西等省均有分布,主要集中在长江中下游的湖泊及其周围的水域。贝壳大而扁平、背后缘向上扩展形成一大三角帆形翼,外行呈三角形。三角帆蚌的分类地位属于软体动物门(Mollusca)双壳纲(Bivalvia)古异齿亚纲(Palaeoheterodonta)蚌总科(Unionacea)蚌目(Unionidae)珠蚌科(Unionidae)帆蚌属(Hyriopsis)三角帆蚌(Hyriopsis cumingii)。 相似文献
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三角帆蚌瘟病的生态学防治 总被引:6,自引:0,他引:6
采用石灰超细微颗粒悬浮法为主控制池塘生态环境,中草药针剂注射为辅的方法,成功的控制了由嵌砂样病毒(Arenavirus)引起的暴发性三角帆蚌瘟病。7000只育珠蚌两周年成活率973%,药物费用仅占产珠成本的二十分之一。结果表明,提高生态环境的pH并增加其钙浓度可以抑制蚌瘟病。后来应用此法控制鱼、贝类病毒病,推广面积达1200公倾。 相似文献
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对福建省福清、莆田和厦门等地区养殖鳖的“白板病”病原菌进行了分离培养、菌种鉴定、人工感染及药敏试验等研究,得知该病的致病菌主要为嗜水气单胞菌(Aeromonas hydrophila)同时还迟缓爱德华氏菌(Edwardsiella tarda)和普通变形杆菌(Proteus vulgaris)。 相似文献
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替米考星是一种动物专用的新型大环内酯类抗生素,临床主要应用于牛、猪、鸡、绵羊、山羊、兔等动物感染性疾病,特别是畜禽呼吸道疾病并取得显著疗效。该药具有抗菌活性强、药代动力学特征优良、用量少、毒性小等特点。临床应用表明:替米考星是一种安全有效的新型兽药,具有广阔的应用前景。 相似文献
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沙市地区暴发性传染病病原研究 总被引:8,自引:1,他引:8
1991年6—9月,从湖北省沙市市及江陵县患暴发性传染病的鲢鱼、鳙鱼、团头鲂、白鲫和鲤鱼体内分离到10多株病原菌;这类细菌能够使多种淡水鱼致病,20℃—28℃时,LD_(50)为10~(4.2)—10~(5.0),能够产生溶血毒素和细胞毒素。经鉴定嗜水气单胞菌(Aeromonas hydrophila)亦是沙市地区暴发性传染病病原之一。 相似文献
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Abstract. Virus was isolated from the brain and pancreatic tissues of Atlantic menhaden with 'spinning' disease. The biological, physical and chemical properties of the isolate were similar to those of infectious pancreatic necrosis virus. Inoculation of the virus into healthy menhaden resulted in the characteristic signs and mortality associated with the natural disease. 相似文献
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Ana C. A. S. Pinheiro Enrico Volpe Donatella Principi Santino Prosperi Sara Ciulli 《Aquaculture International》2016,24(1):115-125
The major viral diseases that affect rainbow trout (Oncorhynchus mykiss) are viral haemorrhagic septicaemia, infectious haematopoietic necrosis, infectious pancreatic necrosis and sleeping disease. In the presented study, we developed a multiplex RT-PCR (mRT-PCR) assay for the simultaneous detection of these four rainbow trout viruses in a single assay. The choice of primers was carried out based on the expected size of the fragments, the temperature and time required for the amplification, and the specificity for the target sequence. Firstly, the method was optimised using reference strains of viral haemorrhagic septicaemia virus (VHSV), infectious haematopoietic necrosis virus (IHNV), infectious pancreatic necrosis virus (IPNV) and sleeping disease virus (SDV) cultivated with permissive cell culture lines; subsequently, the method was used for the identification of these viral infections in rainbow trout samples. Twenty-two samples of rainbow trout, clinically suspected of having viruses, were analysed by the developed method to detect the presence of the four viruses, by directly analysing the animal tissues. The mRT-PCR method was able to efficiently detect the viral RNA in infected cell culture supernatants and in tissue samples, highlighting the presence of single infections as well as co-infections in rainbow trout samples. VHSV/SDV and IHNV/SDV co-infections were demonstrated for the first time in rainbow trout. The mRT-PCR method was revealed to be an accurate and fast method to support traditional diagnostic techniques in the diagnosis of major viral diseases of rainbow trout. 相似文献
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Infectious gill diseases of marine salmonid fish present a significant challenge in salmon-farming regions. Infectious syndromes or disease conditions affecting marine-farmed salmonids include amoebic gill disease (AGD), proliferative gill inflammation (PGI) and tenacibaculosis. Pathogens involved include parasites, such as Neoparamoeba perurans, bacteria, such as Piscichlamydia salmonis and Tenacibaculum maritimum, and viruses, such as the Atlantic salmon paramyxovirus (ASPV). The present level of understanding of these is reviewed with regard to risk factors, potential impacting factors, methods of best practice to mitigate infectious gill disease, as well as knowledge gaps and avenues for future research. 相似文献