The Laurentian Great Lakes strain (MI03) of the viral haemorrhagic septicaemia virus is highly pathogenic for juvenile muskellunge,Esox masquinongy (Mitchill)     

R K Kim  M Faisal 《Journal of fish diseases》2010,33(6):513-527

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FishPathogens.eu/vhsv: a user-friendly viral haemorrhagic septicaemia virus isolate and sequence database     

S P Jonstrup  T Gray  S Kahns  H F Skall  M Snow  N J Olesen 《Journal of fish diseases》2009,32(11):925-929

A database has been created, http://www.FishPathogens.eu , with the aim of providing a single repository for collating important information on significant pathogens of aquaculture, relevant to their control and management. This database will be developed, maintained and managed as part of the European Community Reference Laboratory for Fish Diseases function. This concept has been initially developed for viral haemorrhagic septicaemia virus and will be extended in future to include information on other significant aquaculture pathogens. Information included for each isolate comprises sequence, geographical origin, host origin and useful key literature. Various search mechanisms make it easy to find specific groups of isolates. Search results can be presented in several different ways including table-based, map-based and graph-based outputs. When retrieving sequences, the user is given freedom to obtain data from any selected part of the genome of interest. The output of the sequence search can be readily retrieved as a FASTA file ready to be imported into a sequence alignment tool of choice, facilitating further molecular epidemiological study.  相似文献   

Potential distribution of the viral haemorrhagic septicaemia virus in the Great Lakes region          下载免费PDF全文

L E Escobar  G Kurath  J Escobar‐Dodero  M E Craft  N B D Phelps 《Journal of fish diseases》2017,40(1):11-28

Viral haemorrhagic septicaemia virus (VHSV) genotype IVb has been responsible for large‐scale fish mortality events in the Great Lakes of North America. Anticipating the areas of potential VHSV occurrence is key to designing epidemiological surveillance and disease prevention strategies in the Great Lakes basin. We explored the environmental features that could shape the distribution of VHSV, based on remote sensing and climate data via ecological niche modelling. Variables included temperature measured during the day and night, precipitation, vegetation, bathymetry, solar radiation and topographic wetness. VHSV occurrences were obtained from available reports of virus confirmation in laboratory facilities. We fit a Maxent model using VHSV‐IVb reports and environmental variables under different parameterizations to identify the best model to determine potential VHSV occurrence based on environmental suitability. VHSV reports were generated from both passive and active surveillance. VHSV occurrences were most abundant near shore sites. We were, however, able to capture the environmental signature of VHSV based on the environmental variables employed in our model, allowing us to identify patterns of VHSV potential occurrence. Our findings suggest that VHSV is not at an ecological equilibrium and more areas could be affected, including areas not in close geographic proximity to past VHSV reports.  相似文献   

Search and analysis of genes involved in antibiotic resistance in Chilean strains of Piscirickettsia salmonis          下载免费PDF全文

C Cartes  A Isla  F Lagos  D Castro  M Muñoz  A Yañez  D Haussmann  J Figueroa 《Journal of fish diseases》2017,40(8):1025-1039

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Isolation of viral haemorrhagic septicaemia virus from muskellunge, Esox masquinongy (Mitchill), in Lake St Clair, Michigan, USA reveals a new sublineage of the North American genotype     

Elsayed E  Faisal M  Thomas M  Whelan G  Batts W  Winton J 《Journal of fish diseases》2006,29(10):611-619

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Meningoencephalitis with chondrocranial subcutaneous abscessation and septicaemia in a captive lemon shark (Negaprion brevirostris)     

Andrew Frederick Rich  Flavia Zendri  Susan Thornton  Ranieri Verin 《Journal of fish diseases》2021,44(1):113-117

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Effect of short-term feeding duration of diets containing commercial whole-cell yeast or yeast subcomponents on immune function and disease resistance in channel catfish, Ictalurus punctatus     

Welker TL  Lim C  Yildirim-Aksoy M  Klesius PH 《Journal of animal physiology and animal nutrition》2012,96(2):159-171

Juvenile channel catfish, Ictalurus punctatus, were fed diets supplemented with yeast or yeast subcomponents (YYS) as commercial preparations of β‐glucan (MacroGard^® and Betagard A^®), mannan oligosaccharide (Bio‐Mos^® Aqua Grade), or whole‐cell Saccharomyces cerevisiae (Levucell SB20^®) at the manufacturers’ recommended levels. Fish were fed experimental diets for 1 or 2 weeks prior to disease challenge (pre‐challenge feeding periods) and sampled at the end of each feeding period to measure haematological and immune parameters and to determine the effects of dietary YYS on resistance to Edwardsiella ictaluri, the causative agent of enteric septicaemia disease (ESC). Feeding of experimental diets continued for 3 weeks post‐challenge. In channel catfish fed diets supplemented with MacroGard^®, Betagard A^®, or Levucell SB20^®, survival in the 1 week pre‐challenge feeding group and antibody titres in the 2 week feeding group were significantly higher post‐E. ictaluri challenge in relation to catfish fed with the control diet. In fish fed these same three diets, survival to ESC was significantly higher after 1 week vs. 2 weeks feeding, while the antibody response was significantly higher after 2 weeks vs. 1 week. Lysozyme activity was also higher in the 1 week feeding group, but the increased activity was unrelated to diet. Feeding YYS‐supplemented diets for a shorter duration of 1 week prior to challenge may prove beneficial in increasing resistance to ESC in channel catfish. However, we cannot discount that feeding YYS diets during the recovery period may have contributed to ‘glucan overload’ and reduced survival in the 2 week feeding group.  相似文献   

河西走廊牛巴氏杆菌病的流行病学调查及病原分离鉴定     

魏玉明  郭慧琳  齐明  张文波 《畜牧兽医杂志》2014,(2):6-9

对河西走廊5个市的14个县区70个乡镇350个村7 000个场户进行了牛巴氏杆菌病的流行病学抽样调查和病原学分离鉴定.其结果：发病、死亡和致死率分别为1.72％、1.12％和65.52％.发病季节主要在2～4月和10～12月；肉牛的发病、死亡率分别为1.61％、1.05％,牦牛分别为2.46％、1.60％.180日龄以内的哺乳犊牛发病、死亡率最低,分别为1.19％、0.92％,0.5～1.0岁断奶犊牛最高,分别为2.24％、1.59％；哺乳犊牛致死率最高,为77.02％,0.5～1.0岁断奶犊牛次之,为70.65％,以后随着年龄的增大,逐渐下降.采集发病死亡牛病料56份,有52份检出了多杀性巴氏杆菌,同时对病原进行了分离鉴定.表明牛巴氏杆菌病在河西走廊流行广泛,发病、死亡率较高,危害严重.  相似文献   

鹿溶血性大肠杆菌败血症病原特性的研究     

胡希荣  刘清河  钱爱东 《吉林农业大学学报》1988,(2)

作者对从长春、吉林两个地区搜集到的8株鹿溶血性大肠杆菌并对其杆菌的生化和血清学特性进行了系统地研究。结果表明,这些大肠杆菌生化特性活泼,均呈典型的β型溶血、毒力强、具有致病性。血清学分析表明,8株溶血性大肠杆菌可分为两种K抗原和3种O抗原,且多数为K_(80)。血清学的分析为用免疫学方法诊断和防治本病提供了理论依据。  相似文献   

猪链球菌2型引致脑炎及败血症的豚鼠模型   总被引：11，自引：2，他引：9  

吴全忠  田云  陆承平 《中国兽医学报》2002,22(3):228-230

选用不同日龄的健康豚鼠 132只 ,分组经不同途径接种对猪具有致病性的猪链球菌 2型江苏分离株 HA980 1,引致脑炎及败血症 ,建立了动物模型。试验表明 ,小于 2 4日龄提前断奶的豚鼠对该菌株较易感 ,最佳感染途径是皮下注射 ,腹腔、鼻腔次之。感染豚鼠表现出典型脑炎的临床症状及病理变化。经重复试验测得该菌株对豚鼠的 L D50 为 5 .5× 10 6cfu,从感染死亡豚鼠脑脊液、大脑、血液及各实质器官均可分离出该病原菌 ,与仔猪自然感染情况相似。该动物模型的建立为进一步探究猪链球菌 2型感染的体内动态分布、感染机制、毒力因子及免疫应答奠定了基础  相似文献