Diseases of aquatic organisms最新文献_第2页

First detection of Marteilia pararefringens in Mytilus trossulus. 首次在贻贝中检测到 Pararefringens。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-09-26 DOI: 10.3354/dao03818

Mats Bøgwald, Sigmund B Larsson, Stein Mortensen

引用次数: 0

Relationship between nutritional condition and causes of death in beluga whales Delphinapterus leucas from the St. Lawrence estuary, Quebec, Canada 加拿大魁北克圣劳伦斯河口白鲸的营养状况与死亡原因之间的关系

IF 1.4 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-09-12 DOI: 10.3354/dao03812

Sylvain Larrat, Véronique Lesage, Robert Michaud, Stéphane Lair

{"title":"Relationship between nutritional condition and causes of death in beluga whales Delphinapterus leucas from the St. Lawrence estuary, Quebec, Canada","authors":"Sylvain Larrat, Véronique Lesage, Robert Michaud, Stéphane Lair","doi":"10.3354/dao03812","DOIUrl":"https://doi.org/10.3354/dao03812","url":null,"abstract":"ABSTRACT: Carcasses of endangered beluga whales Delphinapterus leucas from the St. Lawrence Estuary, Canada, have been examined consistently since 1983 to determine causes of death. The objective of this study is to compare the nutritional condition of belugas that died of different causes. Previously published categories of death were refined to discriminate acute from chronic pathological processes. Bayesian linear models were used to predict cause of death from the scaled mass index (SMI). Causes of death were as follows: ‘bacterial diseases’, ‘verminous pneumonia’, ‘toxoplasmosis’, ‘other parasitic diseases’, ‘other infectious diseases’, ‘trauma—entrapment’, ‘other noninfectious diseases’, ‘dystocia—postpartum complications’, ‘neonatal mortality’, ‘cancer’, ‘primary starvation’ and ‘undetermined’. The models predicted a lower nutritional condition for the ‘neonatal mortality’ in belugas <290 cm in length and for ‘primary starvation’ and ‘verminous pneumonia’ categories for belugas ≥290 cm. Belugas that died from ‘dystocia—postpartum complications’ or from ‘undetermined causes’ had a higher-than-average SMI. Animals in the ‘trauma—entrapment’ category did not exhibit the highest nutritional condition, which was unexpected since individuals that died from trauma or entrapment are often used as references for optimal nutritional condition in other cetacean populations. Females that died from dystocia and postpartum complications were in similar nutritional condition as females dead from other causes during, or shortly after, pregnancy. This suggests that these females are not obese, ruling out a possible cause of dystocia. Although studying dead animals biases results toward low nutritional condition, our findings support the link between chronic pathological processes and poorer nutritional condition in belugas.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226174","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

Nectonema horsehair worms (Nematomorpha) parasitic in the Tanner crab Chionoecetes bairdi, with a note on the relationship between host and parasite phylogeny 寄生于丹纳蟹 Chionoecetes bairdi 的马鬃线虫（Nematomorpha），以及关于宿主与寄生虫系统发育关系的说明

IF 1.4 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-09-12 DOI: 10.3354/dao03815

Keiichi Kakui

引用次数: 0

Antimicrobial susceptibility of Peruvian Yersinia ruckeri isolates to oxytetracycline and florfenicol using MIC testing. 利用 MIC 测试法，测定秘鲁 ruckeri 耶尔森氏菌分离株对土霉素和氟苯尼考的抗菌敏感性。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-29 DOI: 10.3354/dao03810

Marco Medina-Morillo, Rute Irgang, Jefferson Yunis-Aguinaga, Ruben Avendaño-Herrera

{"title":"Antimicrobial susceptibility of Peruvian Yersinia ruckeri isolates to oxytetracycline and florfenicol using MIC testing.","authors":"Marco Medina-Morillo, Rute Irgang, Jefferson Yunis-Aguinaga, Ruben Avendaño-Herrera","doi":"10.3354/dao03810","DOIUrl":"https://doi.org/10.3354/dao03810","url":null,"abstract":"Yersiniosis, caused by Yersinia ruckeri, has become the most common disease in farmed rainbow trout Oncorhynchus mykiss in Peru, affecting Puno and Junín Regions, important aquaculture areas in the country. Florfenicol (FLO) and oxytetracycline (OXY) are the antimicrobials most frequently used to mitigate losses attributed to this pathogen. This study presents an analysis of the susceptibility patterns of 60 Y. ruckeri isolates (30 isolates each from Puno and Junín), including the type strain CECT 4319T and the strains CECT 955 and CECT 956, against FLO and OXY. Minimum inhibitory concentrations (MICs) were determined following the guideline for standard broth dilution method published by the Clinical and Laboratory Standards Institute. MIC results ranged from 4.0 to 8.0 µg ml-1 for FLO and 0.5 to 4.0 µg ml-1 for OXY. Normalized resistance interpretation (NRI) analysis identified epidemiological cut-off values of ≤16.0 µg ml-1 for FLO and ≤4.0 µg ml-1 for OXY. All Peruvian isolates, including the collection strains, were categorized as wild-type for both antimicrobials. Even though the number of Y. ruckeri isolates with MIC values of 8 µg ml-1 for FLO is more than double in Puno than in Junín (15 vs. 7 isolates), the NRI analysis showed the same epidemiological cutoff of 16 µg ml-1; while for OXY, it was 4.0 µg ml-1 for Puno and 2.0 µg ml-1 for Junín. This study establishes the basis for monitoring susceptibility to FLO and OXY in new Y. ruckeri isolates in Peruvian rainbow trout farming.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"159 ","pages":"127-131"},"PeriodicalIF":1.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142105387","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

Temporal patterns in coral disease prevalences at Thudufushi Island, Maldives, 2010-2022. 马尔代夫 Thudufushi 岛珊瑚疾病流行的时间模式，2010-2022 年。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-29 DOI: 10.3354/dao03807

Chiara Bises, Jacopo Gobbato, Niccolò Lainati, Inga Dehnert, Federica Siena, Davide Seveso, Enrico Montalbetti, Yohan Didier Louis, Simone Montano

{"title":"Temporal patterns in coral disease prevalences at Thudufushi Island, Maldives, 2010-2022.","authors":"Chiara Bises, Jacopo Gobbato, Niccolò Lainati, Inga Dehnert, Federica Siena, Davide Seveso, Enrico Montalbetti, Yohan Didier Louis, Simone Montano","doi":"10.3354/dao03807","DOIUrl":"https://doi.org/10.3354/dao03807","url":null,"abstract":"Coral reefs are lately suffering a fast decline in biodiversity due to the coupled effect of climate change and disease outbreaks, which in recent decades have been reported with higher frequency and shorter intervals. Limited studies have been conducted on coral diseases in the Maldives resulting in the impossibility of assessing the temporal trend in their dynamics. In this context, we evaluated the change in the distribution, prevalence, and host range of 4 diseases, namely black band disease (BBD), brown band disease (BrB), skeletal eroding band (SEB) and white syndrome (WS), in the reef system around Thudufushi Island after an interval of 12 yr since the last assessment. In this period, the overall disease prevalence increased, except for BrB, with SEB showing the most severe increase in 2022 in comparison to 2010. The overall average prevalence of coral diseases is approximately 2%, indicating an increase of about 0.7% since 2010. Diseased coral colonies were found in all the investigated sites, with the east site being the most affected and SEB emerging as the most prevalent disease across all the investigated sites. The affected colonies belong to 13 genera, with Psammocora genus showing the highest overall mean disease prevalence. This study depicted a basic temporal trend in disease prevalence that confirms an increase in coral diseases in the region and calls for a dedicated national monitoring protocol to better understand and predict future coral disease dynamics at regional scales.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"159 ","pages":"133-142"},"PeriodicalIF":1.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142105390","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

Identification and antifungal sensitivity of Fusarium species isolated from piscine hosts. 从鱼类宿主中分离出的镰刀菌种的鉴定和抗真菌敏感性。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-29 DOI: 10.3354/dao03809

Victoria Chanu Khangembam, Dimpal Thakuria, Ritesh Shantilal Tandel, Vinita Pant, Nityanand Pandey, Pramod Kumar Pandey

{"title":"Identification and antifungal sensitivity of Fusarium species isolated from piscine hosts.","authors":"Victoria Chanu Khangembam, Dimpal Thakuria, Ritesh Shantilal Tandel, Vinita Pant, Nityanand Pandey, Pramod Kumar Pandey","doi":"10.3354/dao03809","DOIUrl":"https://doi.org/10.3354/dao03809","url":null,"abstract":"Fusarium is a huge genus of filamentous fungi that has the potential to cause emerging diseases. Members of this genus can cause infections in plants, animals and humans. Here, we report the isolation of F. oxysporum and F. equiseti from 2 important fish species, Oncorhynchus mykiss (rainbow trout) and Tor putitora (golden mahseer), respectively. F. oxysporum has emerged as a significant fungal pathogen causing infection in many fish. However, F. equiseti has been isolated mainly from plants. As far as the available literatures are concerned, this is the first report on the isolation of F. oxysporum and F. equiseti from these hosts. The isolates were identified based on growth morphology and microscopic observation. F. oxysporum produced violet pigmentation on potato dextrose agar, while F. equiseti had yellow colouration. F. oxysporum produced 1- to 2-celled microconidia along with straight or curved macroconidia having 3 to 4 septa. F. equiseti produced abundant macroconidia with 4 or more septa. Species were further confirmed based on the nucleotide sequences of the internal transcribed spacer region. In a molecular phylogeny analysis, F. oxysporum and F. equiseti formed 2 different clades. In an antifungal sensitivity assay, F. oxysporum was found to be susceptible to clotrimazole with a minimum inhibitory concentration of 1.0 µg ml-1, whereas F. equiseti was susceptible to clotrimazole, ketoconazole and fluconazole. Overall, the main findings of this study are the infection of new hosts by Fusarium species and the limited activity of many antifungal drugs against these pathogens.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"159 ","pages":"117-126"},"PeriodicalIF":1.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142105388","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

Shewanella putrefaciens as an emerging pathogen of hepatopancreas necrosis disease in Chinese mitten crab Eriocheir sinensis. 中华绒螯蟹肝胰腺坏死病的新病原体--普氏雪旺菌。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-29 DOI: 10.3354/dao03811

Jie Liu, Chenhao Teng, Xurui Zheng, La Xu, Haipeng Cao, Chunlei Gai

{"title":"Shewanella putrefaciens as an emerging pathogen of hepatopancreas necrosis disease in Chinese mitten crab Eriocheir sinensis.","authors":"Jie Liu, Chenhao Teng, Xurui Zheng, La Xu, Haipeng Cao, Chunlei Gai","doi":"10.3354/dao03811","DOIUrl":"https://doi.org/10.3354/dao03811","url":null,"abstract":"Shewanella putrefaciens has been recognized as an emerging important pathogen in aquaculture. However, scarce information is available on the characterization and microbial control of S. putrefaciens as a causal agent of hepatopancreas necrosis disease in Chinese mitten crab Eriocheir sinensis. In this study, a multi-resistant S. putrefaciens isolate (DZ-A) was identified as a causal pathogen of hepatopancreas necrosis disease in Chinese mitten crabs. It showed a lethal dose (LD50) of 2.20 × 105 CFU ml-1 in Chinese mitten crabs, and multiple resistance to aminoglycoside, chloramphenicol, macrolide, penicillin, peptide, and tetracycline antimicrobials. In addition, Bdellovibrio powder exhibited a significant antibacterial effect against the pathogenic S. putrefaciens, and conferred significant protection to challenged Chinese mitten crabs with relative percentage survivals of 80.00% to 93.33% via significant improvement in their immune response and antioxidant capability. The findings of this study provide valuable insights into the phenotypic characterization and biological control of pathogenic S. putrefaciens in Chinese mitten crabs.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"159 ","pages":"143-152"},"PeriodicalIF":1.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142105389","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

Relationship between skin and body condition in three species of baleen whales. 三种须鲸的皮肤与身体状况之间的关系。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-15 DOI: 10.3354/dao03808

Joyce Neves, Séverine Methion, Bruno Díaz López

{"title":"Relationship between skin and body condition in three species of baleen whales.","authors":"Joyce Neves, Séverine Methion, Bruno Díaz López","doi":"10.3354/dao03808","DOIUrl":"https://doi.org/10.3354/dao03808","url":null,"abstract":"The assessment of free-ranging cetacean health through the study of skin conditions using photographs has gained prominence in recent years. However, little attention has been given to the relationships between cetacean skin conditions, species, and body condition. To explore this relationship among baleen whale species along the northwestern coast of Spain, we employed a non-invasive method involving photograph analysis. In this study, we examined skin conditions (including injuries, epizoites and ectoparasites, pigmentation disorders, skin lesions, and anatomical malformations) and body condition (overall physical contours and form, as an indicator of nutritional status and health) in 3 species of whales (blue, fin, and minke whales). This methodology facilitated the identification of 29 subcategories of distinct skin conditions and an assessment of body condition over a 5 yr period (2017 to 2021). In our study, we present evidence linking hypopigmentation, protruding pieces of tissue, and tattoo-like lesions to 'Poor' body condition in the 3 baleen whale species. Fin whales exhibited a higher susceptibility to mottling (prevalence = 17.7%), while blue whales were more prone to starbursts (prevalence = 90.5%). Additionally, we found a significant relationship between skin condition diversity and individual body condition. Our findings contribute valuable information to the broader understanding of the health status of baleen whales. Further investigations are necessary to delve into the etiology of the documented skin conditions and their potential implications for individual survival. This study serves as a foundation for ongoing research aimed at advancing our comprehension of these findings.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"159 ","pages":"99-115"},"PeriodicalIF":1.1,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141981959","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

Francisella sciaenopsi sp. nov. isolated from diseased red drum Sciaenops ocellatus in Florida, USA. Francisella sciaenopsi sp.

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-15 DOI: 10.3354/dao03803

Miku Kawahara, Theresa T Cody, Roy P E Yanong, Eileen Henderson, Zeinab Yazdi, Esteban Soto

{"title":"Francisella sciaenopsi sp. nov. isolated from diseased red drum Sciaenops ocellatus in Florida, USA.","authors":"Miku Kawahara, Theresa T Cody, Roy P E Yanong, Eileen Henderson, Zeinab Yazdi, Esteban Soto","doi":"10.3354/dao03803","DOIUrl":"https://doi.org/10.3354/dao03803","url":null,"abstract":"Piscine francisellosis is one of the most important bacterial diseases affecting various fish species worldwide. Francisella orientalis, F. noatunensis, and F. salimarina (F. marina) have been reported as etiological agents of disease in fish. A Francisella sp. was isolated from several diseased red drum Sciaenops ocellatus experiencing morbidity in Florida, USA, in 2008. In this study, molecular and phenotypic characterization of the recovered isolate was conducted. Phenotypically, the isolate showed a biochemical reaction profile distinct from that of F. orientalis and F. salimarina. Although the 16S rRNA sequence of this isolate shared 99.61% identity to the type strain of F. philomiragia O#319LT, whole genome analysis (average nucleotide identity <95%; digital DNA-DNA hybridization <70%) and a multilocus sequence analysis of 8 concatenated housekeeping genes in comparison with other Francisella spp. indicated that this isolate was a novel Francisella species, more closely related to F. orientalis. Immersion, intracoelomic injection, and co-habitation challenges using a Nile tilapia Oreochromis niloticus fingerling model of infection were done to investigate virulence in a piscine model. Variably pigmented granulomas and pigmented macrophage aggregates were observed in the kidneys and spleens of the challenged fish, but no mortality was recorded during the 15 d challenge period, suggesting that this novel Francisella sp. might be an opportunistic pathogen of fish. Based on the phenotypic and genotypic differences from other Francisella spp. observed in this study, we propose the name Francisella sciaenopsi sp. nov. for this novel isolate.","PeriodicalId":11252,"journal":{"name":"Diseases of aquatic organisms","volume":"159 ","pages":"79-89"},"PeriodicalIF":1.1,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141981958","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 case of ichthyophonosis in farmed rainbow trout Oncorhynchus mykiss in Serbia. 塞尔维亚首例养殖虹鳟鱼鱼鳞病病例。

IF 1.1 4区农林科学

Diseases of aquatic organisms Pub Date : 2024-08-15 DOI: 10.3354/dao03804

Vladimir Radosavljevic, Oliver Radanovic, Dimitrije Glišic, Nemanja Zdravkovic, Jelena Maksimovic-Zoric, Ksenija Nesic, Bozidar Savic, Bozidar Raškovic

引用次数: 0