Bulletin of the European Association of Fish Pathologists最新文献_第2页

Sampling artefacts in gill histology of freshwater Atlantic salmon (Salmo salar) 大西洋淡水三文鱼（Salmo salar）鳃组织学中的采样伪影

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2023-02-08 DOI: 10.48045/001c.68302

S. Mitchell, F. Scholz, M. Marcos, H. Rodger

引用次数: 1

First detection of Cyclopterus lumpus virus in England, following a mortality event in farmed cleaner fish 继养殖清洁鱼死亡事件后，英国首次检测到肿眼独翼鱼病毒

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-12-08 DOI: 10.48045/001c.56559

M. Edwards, J. Bignell, Alexandra Papadopoulou, E. Trani, J. Savage, A. Joseph, G. Wood, D. Stone

{"title":"First detection of Cyclopterus lumpus virus in England, following a mortality event in farmed cleaner fish","authors":"M. Edwards, J. Bignell, Alexandra Papadopoulou, E. Trani, J. Savage, A. Joseph, G. Wood, D. Stone","doi":"10.48045/001c.56559","DOIUrl":"https://doi.org/10.48045/001c.56559","url":null,"abstract":"Lumpfish are used routinely as cleaner fish to delouse farmed Atlantic salmon (Salmo salar) and are often translocated globally. In September 2021, an aquaculture production business in Dorset, England experienced considerable mortalities in consignments of lumpfish (Cyclopterus lumpus) imported from Norway. Following suspicion of infection with Cyclopterus lumpus virus (CLuV) by a veterinarian, commercial testing provided presumptive confirmation of a CLuV infection using reverse-transcription real-time polymerase chain reaction (RT-rPCR). Affected fish were later resampled by the Centre of Environment, Fisheries, and Aquaculture Science, Fish Health Inspectorate for screening of CLuV by RT-rPCR, and confirmation by conventional RT-PCR and sequence analysis. Additional samples were tested using isolation of viruses on cell cultures, bacteriology, histopathology, and PCR/rPCR techniques to investigate whether other pathogens of concern to the salmon aquaculture industry were also present. All samples tested negative for the presence of viral haemorrhagic septicaemia virus, infectious haematopoietic necrosis virus , nervous necrosis virus, infectious pancreatic necrosis virus , infectious salmon anaemia virus , ranavirus, and salmonid alphavirus. Four pools of ten samples tested positive by RT-rPCR for CLuV (Ct values between 19 and 29) and was confirmed using conventional RT-PCR. Sequence analysis showed that amplicons shared a 99.63 % match with the published sequences for CLuV. The CLuV has only recently been reported in aquatic animals and its full impact is not yet known. To the best of our knowledge this is the first report of CLuV in England.","PeriodicalId":55306,"journal":{"name":"Bulletin of the European Association of Fish Pathologists","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44448676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of puffy skin disease in farmed rainbow trout Oncorhynchus mykiss from Switzerland 瑞士养殖虹鳟鱼皮肤浮肿病首例报道

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-12-08 DOI: 10.48045/001c.39775

C. de Sales-Ribeiro, H. Schmidt-Posthaus, N. Diserens

{"title":"First report of puffy skin disease in farmed rainbow trout Oncorhynchus mykiss from Switzerland","authors":"C. de Sales-Ribeiro, H. Schmidt-Posthaus, N. Diserens","doi":"10.48045/001c.39775","DOIUrl":"https://doi.org/10.48045/001c.39775","url":null,"abstract":"Puffy skin disease (PSD) is an economically important syndrome in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792). Because of its horizontal transmission, an infectious aetiology was hypothesised. However, aetiology remains unknown so far. PSD was first reported in 2002 in fish farms in England. Since then, cases have increased significantly, with additional reports in still water fisheries. Typically, the prevalence and severity of PSD increase during the summer and autumn months (13°C – 15°C). In February 2022, rainbow trout from a mountainous fish farm in Switzerland showed lethargy, inappetence, white to grey patches on the skin and slightly increased mortality. Twenty-one rainbow trout were submitted for diagnostics to the Institute for Fish and Wildlife Health, University of Bern, Switzerland. On post-mortem examination, 7/21 had up to 75% to 90% of the skin surface affected with bilateral, focally extensive white to grey, rough patches. The scales on the affected areas were raised, and the skin thickened. The histologic assessment revealed focally extensive, severe, epidermal hyperplasia with spongiosis and hydropic degeneration, severe scale pocket oedema with mild infiltration by degenerated neutrophils and lymphocytes, necrosis, and cellular debris displacing the scales. These findings are consistent with PSD. This is the first report of PSD in Switzerland. Here, contrary to previous reports, the disease occurred in rainbow trout exposed to 6-7°C water during the winter.","PeriodicalId":55306,"journal":{"name":"Bulletin of the European Association of Fish Pathologists","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46045001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isolation and identification of Capillaria sp. in ornamental green terror (Andinoacara rivulatus Günther, 1860) farmed in Iran 在伊朗养殖的观赏绿恐怖(Andinoacara rivulatus g<e:1> nther, 1860)中毛细孢子的分离和鉴定

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-11-21 DOI: 10.48045/001c.39773

H. Rahmati-Holasoo, A. Marandi, H. E. Mousavi, A. Azizi

{"title":"Isolation and identification of Capillaria sp. in ornamental green terror (Andinoacara rivulatus Günther, 1860) farmed in Iran","authors":"H. Rahmati-Holasoo, A. Marandi, H. E. Mousavi, A. Azizi","doi":"10.48045/001c.39773","DOIUrl":"https://doi.org/10.48045/001c.39773","url":null,"abstract":"Green terror (Andinoacara rivulatus) is one of the most popular freshwater ornamental fish of the Cichlidae, which is commonly bred and cultivated in Iran. The aim of this study was to investigate the main cause of green terror mass losses in an ornamental fish breeding center in Nazarabad, Alborz province. Following chronic and continuous losses of mature green terrors with clinical signs including white feces hanging from the anus, the fish were sampled between June 2021 and July 2021. The fish were packed in water-filled polyethylene bags and transported to the Ornamental Fish Clinic, Faculty of Veterinary Medicine, University of Tehran. In macroscopic examinations, cachexia and paleness of the fish were evident. In order to investigate ectoparasitic infestations, wet smears were prepared from skin and gills, and examined under a light microscope. However, no parasitic infection was observed. In addition, the fish were euthanised, necropsied, and internal organs such as the intestine were examined. Microscopic examination of the intestine showed a heavy infection with mature Capillaria sp. and the barrel-shaped eggs. In the present study, the severity of Capillaria infection was very high and determined to be the main cause of losses. In order to treat the other fish in the population, levamisole was administered for 48 h every 7 days for 28 days. After re-examination, fish losses completely stopped, and no infection was observed after 28 days.","PeriodicalId":55306,"journal":{"name":"Bulletin of the European Association of Fish Pathologists","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49222331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A case study of Dermotheca gasterostei (=Dermocystidium gasterostei, Elkan) isolated from three-spined stickleback (Gasterosteus aculeatus) captured in lake Vättern, Sweden. 瑞典Vättern湖捕获的三棘棘鱼(Gasterosteus aculeatus)中分离的胃皮囊蚴(=Dermocystidium gasterostei, Elkan)个案研究。

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-10-18 DOI: 10.48045/001c.38402

B.D. Persson, A. Aspán, D. Bass, C. Axén

引用次数: 0

Precision limits for MIC data required to set epidemiological cut-off values 设定流行病学临界值所需的MIC数据精度限值

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-10-17 DOI: 10.48045/001c.38713

P. Smith

引用次数: 1

Coinfection by Group C Streptococcus dysgalactiae subsp. equisimilis and Flavobacterium davisii in Nile Tilapia from the United States C群无乳链球菌亚群合并感染。美国尼罗罗非鱼中的黄杆菌和黄杆菌

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-10-17 DOI: 10.48045/001c.38695

C. Shoemaker, T. I. Heckman, E. Soto, B. LaFrentz, B. Beck, M. Paulson, J. García

引用次数: 0

Molecular characterisation of Lymphocystis Disease Virus detected from Sea Bream in Turkey 土耳其海参淋巴囊肿病病毒的分子特征

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-10-05 DOI: 10.48045/001c.38086

K. Pekmez, M. Kaplan, A. A. Çağırgan, F. Arslan, B. Kafa, G. Kalaycı

引用次数: 0

The application of exopolysaccharides (EPS) can prevent viral disease of fish 胞外多糖（EPS）的应用可预防鱼类病毒性疾病

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-10-05 DOI: 10.48045/001c.38087

S. Bergmann, M. Reichert, J. Hwang, A. Becker, M. Lenk, G. Kotterba, R. Buchholz, S. Jung, A. Gebler, M. Todte, J. Kielpinska, C. Lindenberger

{"title":"The application of exopolysaccharides (EPS) can prevent viral disease of fish","authors":"S. Bergmann, M. Reichert, J. Hwang, A. Becker, M. Lenk, G. Kotterba, R. Buchholz, S. Jung, A. Gebler, M. Todte, J. Kielpinska, C. Lindenberger","doi":"10.48045/001c.38087","DOIUrl":"https://doi.org/10.48045/001c.38087","url":null,"abstract":"In the frame of investigations on the use of exopolysaccharides (EPS) from Arthrospira platensis in carp and koi cultures, two animal experiments were carried out to assess their efficiency as prophylactic and metaphylactic (therapeutic) measures against koi herpesvirus disease (KHVD). In experiment 1, carp were treated with algae biomass (BM) and EPS before and after infection with European lineage koi herpesvirus (KHV-E). In experiment 2, carp were treated with EPS prior and after the infection with Taiwan isolate of KHV (KHV-T), only prior to infection with higher concentration of EPS or only after the infection with KHV-T. No conclusive protection against KHV was observed in experiment 1 in carp treated with BM. In groups where EPS was applied, carp were protected to a certain extent. In experiment 2, carp were protected significantly against a severe KHVD outbreak. In the prophylactic group, which received a double EPS concentration for six weeks, and in the metaphylactic group, KHVD was stopped. Fish developed antibodies against EPS as well as against KHV at day 30 post infection.","PeriodicalId":55306,"journal":{"name":"Bulletin of the European Association of Fish Pathologists","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49345198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acute lethal toxicity of dried garlic (Allium sativum) powder on orange-spotted grouper (Epinephelus coioides) juveniles under static exposure 大蒜干粉对静态照射下斑石斑鱼幼鱼的急性致死性研究

4区农林科学

Bulletin of the European Association of Fish Pathologists Pub Date : 2022-10-05 DOI: 10.48045/001c.38092

G. Erazo-Pagador, H. R. Dumaran-Paciente, B.J. Caloyloy

{"title":"Acute lethal toxicity of dried garlic (Allium sativum) powder on orange-spotted grouper (Epinephelus coioides) juveniles under static exposure","authors":"G. Erazo-Pagador, H. R. Dumaran-Paciente, B.J. Caloyloy","doi":"10.48045/001c.38092","DOIUrl":"https://doi.org/10.48045/001c.38092","url":null,"abstract":"The present study was carried out to assess the toxic effect and determine the lethal concentration of dried garlic (Allium sativum) powder on the orange-spotted grouper (Epinephelus coioides) juveniles. Laboratory static bioassays were conducted to determine the 96-h LC50 of different concentrations of garlic (0, 30, 60, 90, 120, 150 and 180 mg L-1) on grouper juveniles (mean weight, 35.4±6.18 g and mean length, 13.2±0.51 cm). The 96-h LC50 was 74.78 mg L-1 with lower and upper confidence limits of 62.8 and 89.06 mg L-1, respectively. All fish exposed to 30 to 180 mg L-1 exhibited rapid movement, faster opercular activity and erratic swimming whereas at higher concentrations (90 mg L-1 to 180 mg L-1) fish showed additional behavioral changes such as loss of balance, lethargy, gulping for air and respiratory distress. Water quality parameters were within the recommended acceptable limits. This LC50 value can be used as a baseline reference to generate an effective concentration of garlic for future prophylaxis and treatment for parasitic, viral and bacterial infection in grouper.","PeriodicalId":55306,"journal":{"name":"Bulletin of the European Association of Fish Pathologists","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47947010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0