journal
https://read.qxmd.com/read/39011626/inflammatory-responses-in-atlantic-lumpfish-cyclopterus-lumpus-l-after-intraperitoneal-injection-of-a-vaccine-against-aeromonas-salmonicida-and-vibrio-salmonicida-at-different-water-temperatures
#1
JOURNAL ARTICLE
Ingrid Svihus Knutsen, Toni Erkinharju, Jarl Bøgwald, Roy A Dalmo, Tore Seternes
Studying inflammatory responses induced by vaccination can contribute to a more detailed understanding of underlying immune mechanisms in lumpfish (Cyclopterus lumpus). Tissue samples from lumpfish intraperitoneally immunized with a divalent oil-adjuvanted vaccine (Aeromonas salmonicida and Vibrio salmonicida) at water temperatures of 5, 10, and 15°C were collected at 630 day degrees and 18 weeks post injection. The relative amount of secretory and membrane-bound immunoglobulin M (IgM) gene transcripts in the head kidney was determined by qPCR...
July 16, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/39010687/strep-easy-kit-a-bio-enrichment-dual-icg-strip-test-for-simultaneous-detection-of-streptococcus-agalactiae-serotypes-ia-and-iii-in-fish-samples
#2
JOURNAL ARTICLE
Orawan Himananto, Kirana Yoohat, Kannawat Danwisetkanjana, Mallika Kumpoosiri, Sombat Rukpratanporn, Yada Theppawong, Nanthita Sukchai, Sirima Siripaitoon, Nontawith Areechon, Sasimanas Unajak, Oraprapai Gajanandana
The Strep Easy Kit, a bio-enrichment dual ICG-strip test, is a diagnostic tool designed for the detection of Streptococcus agalactiae, an important pathogenic bacterium in tilapia farming. The kit can simultaneously identify two different serotypes of S. agalactiae, serotype Ia and serotype III. This capability is crucial for the collection of valuable epidemiological data and facilitates strategic planning for effective vaccine development and deployment. The Strep Easy Kit consists of two main steps: pathogen enrichment and pathogen detection...
July 15, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/39001637/diploid-and-triploid-chinook-salmon-oncorhynchus-tshawytscha-exhibit-differential-immunological-responses-to%C3%A2-acute-thermal-stress
#3
JOURNAL ARTICLE
Noah P Rogozynski, Ivan G Cadonic, Manuel Soto-Dávila, Valentina Wong-Benito, Tania Rodriguez-Ramos, Paul Craig, Brian Dixon
Exposure to temperatures outside of a fish's optimal range results in suppression of the immune system, ultimately leaving aquaculture stocks susceptible to disease outbreaks. This effect is exacerbated in triploid fishes, which demonstrate greater susceptibility to stress than their diploid counterparts. This study investigates the impacts of acute heat stress on the abundance of immune transcripts and proteins in diploid and triploid Chinook salmon (Oncorhynchus tshawytscha), an important finfish crop. This study also demonstrates that acute heat stress induces significant increases in the abundance hsp70, hsp90 and il1b transcripts in the head kidneys, gills and heart ventricles of both diploid and triploid Chinook salmon...
July 12, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38973170/immersion-immunization-with-recombinant-saccharomyces-cerevisiae-displaying-orf25-induced-protective-immunity-against-cyprinid-herpesvirus-2
#4
JOURNAL ARTICLE
Maoxia Yang, Sheng Luo, Qianjin Zhou, Jianfei Lu, Jiong Chen
Displaying antigens on yeast surface as an oral vaccine has been widely explored, while its potential as an immersion vaccine has not been evaluated. Here, an immersion vaccine was prepared by displaying ORF25 of Cyprinid herpesvirus 2 (CyHV-2) on the surface of Saccharomyces cerevisiae. Carassius auratus gibelio was immersion immunized by 2 × 107  CFU/mL yeast for 2 h, and reinforce the immunity using the same method 14 days after the first immunization. The results showed that ORF25 specific antibody in immunized crucian carp serum was detected at a high level, and the mRNA expression level of IgM, IgT, IL-1β, and IFN-1 in vaccinated head-kidney and spleen tissues were higher than the control group, indicating that innate and adaptive immunity were induced...
July 7, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38973153/lactococcus-lactis-ma5-is-a-potential-autochthonous-probiotic-for-nutrient-digestibility-enhancement-and-bacterial-pathogen-inhibition-in-hybrid-catfish-ictalurus-punctatus%C3%A2-%C3%A3-%C3%A2-i-furcatus
#5
JOURNAL ARTICLE
Jing Huang, Heather R Jordan, Caitlin E Older, Matt J Griffin, Peter J Allen, David J Wise, Penelope M Goodman, J Grant Reifers, Fernando Y Yamamoto
With the emergence of diseases, the U.S. catfish industry is under challenge. Current trends prefer autochthonous bacteria as potential probiotic candidates owing to their adaptability and capacity to effectively colonize the host's intestine, which can enhance production performance and bolster disease resistance. The objective of this study was to isolate an autochthonous bacterium as probiotic for hybrid catfish. Initially, an analysis of the intestinal microbiota of hybrid catfish reared in earthen ponds was conducted for subsequent probiotic development...
July 7, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38957033/mullus-barbatus-l-and-mullus-surmuletus-l-from-western-mediterranean-waters-se-spain-are-infected-by-hysterothylacium-fabri-but-not-by-zoonotic-nematodes-possible-impact-on-fish-hosts
#6
JOURNAL ARTICLE
Manuel Morales-Yuste, Jesús López-Valverde, Natalia Sánchez-Fernández, Jesús Veiga, Mario Garrido, Francisco Javier Adroher, Rocío Benítez
In order to know whether there is a risk of anisakiasis (or anisakidosis) by consumption of fish of the genus Mullus from the western Mediterranean Sea, which are appreciated for their quality, an epidemiological survey was carried out to evaluate the occurrence of zoonotic or potentially zoonotic nematodes in M. barbatus and M. surmuletus. Although the presence of the third larval stage (L3) of anisakids (Anisakis and Contracaecum) has been previously described in these fish, the results showed the absence of anisakids and the presence, never in muscle, of L3 and L4 of raphidascaridids of the genus Hysterothylacium, molecularly identified as H...
July 2, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38953156/mass-mortality-event-of-round-sardinella-sardinella-aurita-valenciennes-associated-with-glugea-th%C3%A3-lohan-1891-microsporidian-infection-off-the-southern-italian-coast
#7
JOURNAL ARTICLE
Alejandro López-Verdejo, Flavia Occhibove, Barbara Degli Uberti, Francisco E Montero, Mario Santoro
Intracellular parasites of the genus Glugea Thélohan, 1891 (Microsporidia) comprise about 34 putative species capable of causing high morbidity and mortality in freshwater and marine teleost fishes. In this study, we report on the first mass mortality event associated with Glugea sp. infecting free-ranging round sardinella Sardinella aurita in the southern Tyrrhenian Sea (Italy). Here, we describe the ultrastructure of mature spores of this microsporidian and characterize it molecularly, as well as report its phylogenetic position...
July 2, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38953153/changes-in-blood-serum-parameters-in-farmed-rainbow-trout-oncorhynchus-mykiss-during-a-piscine-lactococcosis-outbreak
#8
JOURNAL ARTICLE
Giuseppe Esposito, Stefania Bergagna, Silvia Colussi, Khalid Shahin, Roberta Rosa, Donatella Volpatti, Caterina Faggio, Camilla Mossotto, Alice Gabetti, Alessandra Maganza, Elena Bozzetta, Marino Prearo, Paolo Pastorino
The aquaculture sector plays a vital role in global food security, yet it grapples with significant challenges posed by infectious diseases. Piscine lactococcosis is one of the significant threats in rainbow trout aquaculture due to its potential to cause severe economic losses through mortalities, reduced growth rates, and increased susceptibility to other pathogens. It poses challenges in disease management strategies, impacting the sustainability and profitability of rainbow trout farming. The current study focuses on the variations in serum blood parameters of farmed rainbow trout Oncorhynchus mykiss during a lactococcosis outbreak caused by Lactococcus garvieae...
July 2, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38950086/dynamic-pathology-and-pathogen-distribution-of-the-yeast-metschnikowia-bicuspidata-in-the-chinese-mitten-crab-eriocheir-sinensis
#9
JOURNAL ARTICLE
Xinran Shi, Na Sun, Jiannan Liu, Senting Pu, Zhouling Chen, Dong Sheng, Kexin Hao, Xiaodong Li, Shigen Ye
In this study, the "milky disease" model of Eriocheir sinhensis was constructed via intramuscular injection with the pathogenic yeast Metschnikowia bicuspidata. The dynamic pathological changes of E. sinensis after injection were elucidated with two staining methods (haemotoxylin-eosin and alcian blue periodic acid-Schiff) and fluorescence in situ hybridization technology. Anatomical observation revealed three stages of the "milky disease": no clinical signs (1-4 days after infection), the appearance of signs of disease (5-7 days), and significant liquefaction (10 days)...
July 1, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38943552/prevalence-and-typology-of-skeletal-abnormalities-in-fishes-of-the-eastern-mediterranean
#10
JOURNAL ARTICLE
Dimitrios Chatzakis, Roula Al Belbeisi, Soultana Karagianni, Eustratios Karagiannakidis, George Koumoundouros
No abstract text is available yet for this article.
June 29, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38943549/proteomic-characterization-of-tenacibaculum-dicentrarchi-under-iron-limitation-reveals-an-upregulation-of-proteins-related-to-iron-oxidation-and-reduction-metabolism-iron-uptake-systems-and-gliding-motility
#11
JOURNAL ARTICLE
Ruben Avendaño-Herrera, Macarena Echeverría-Bugueño, Mauricio Hernández, Pablo Saldivia, Rute Irgang
A strategy for vaccine design involves identifying proteins that could be involved in pathogen-host interactions. The aim of this proteomic study was to determine how iron limitation affects the protein expression of Tenacibaculum dicentrarchi, with a primary focus on virulence factors and proteins associated with iron uptake. The proteomic analysis was carried out using two strains of T. dicentrarchi grown under normal (control) and iron-limited conditions, mimicking the host environment. Our findings revealed differences in the proteins expressed by the type strain CECT 7612T and the Chilean strain TdCh05 of T...
June 29, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38943443/exploring-the-use-of-fatty-acid-ethyl-esters-as-a-potential-natural-solution-for-the-treatment-of-fish-parasitic-diseases
#12
JOURNAL ARTICLE
Arunjyothi Jawaji, Inna Khozin Goldberg, Dina Zilberg
Alternatives to conventional chemical treatments for parasitic diseases in fish are needed. Microalgal-sourced fatty acid ethyl esters (FAEEs) have shown an antiparasitic effect against Gyrodactylus turnbulli infection in guppies. Here, we tested a range of commercial FAEEs of various carbon chain lengths and unsaturation levels against two fish parasites. Guppies and barramundi infected with G. turnbulli and Trichodina sp., respectively, were used. The most effective FAEE, after excluding those toxic to fish, was ethyl laurate (12:0)...
June 29, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38943363/deciphering-the-pathogenesis-of-melanized-focal-changes-in-the-white-skeletal-muscle-of-farmed-atlantic-salmon-salmo-salar
#13
JOURNAL ARTICLE
Håvard Bjørgen, Malin Brimsholm, Charlotte Finstad Asserson, Kirstin Skaar, Geir Magne Knutsen, Øyvind Oaland, Randi Haldorsen, Per Gunnar Fjelldal, Tom Hansen, Espen Rimstad, Britta Andrea Kleist, Marius Lund-Iversen, Mariusz Pawel Kowalewski, Erling Olaf Koppang
Melanized focal changes (MFCs) in the fillet of farmed Atlantic salmon is a major quality concern. The changes are thought to initially appear as acute red focal changes (RFCs) that progress into chronic MFCs. Recent findings have indicated that hypoxia may be important in their development, possibly leading to necrosis affecting not only myocytes but also adipocytes. Thus, the aim of this study was to investigate possible hypoxic conditions in RFCs and the subsequent inflammatory responses and lesions in the adipose tissue in RFCs and MFCs...
June 29, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38924607/first-detection-of-ichthyophonus-sp-in-invasive-wild-pink-salmon-oncorhynchus-gorbuscha-from-the-north-atlantic-ocean
#14
JOURNAL ARTICLE
Toni Erkinharju, Haakon Hansen, Åse Helen Garseth
Pacific pink salmon (Oncorhynchus gorbuscha) were deliberately introduced to rivers surrounding the White Sea and has spread to Norway and several other countries surrounding the North Atlantic Ocean. In August 2021, a female pink salmon displaying pale gills and abnormal behaviour was captured in River Lakselva in Northern Norway and later submitted to the Norwegian Veterinary Institute (NVI) for post-mortem examination. Histological examination of organ samples revealed structures indicative of systemic ichthyophoniasis, caused by Ichthyophonus sp...
June 24, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38923541/replacement-of-fishmeal-with-a-microbial-single-cell-protein-induced-enteropathy-and-poor-growth-outcomes-in-barramundi-lates-calcarifer-fry
#15
JOURNAL ARTICLE
Francisca Samsing, Roisin Sullivan, Ha Truong, Artur Robenso, Cheryl R Sangster, Jo Bannister, Matt Longshaw, Joy A Becker
Fish meal (FM) replacement is essential for the sustainable expansion of aquaculture. This study focussed on the feasibility of replacing FM with a single-cell protein (SCP) derived from methanotrophic bacteria (Methylococcus capsulatus, Bath) in barramundi fry (Lates calcarifer). Three isonitrogenous and isoenergetic diets were formulated with 0%, 6.4% and 12.9% inclusion of the SCP, replacing FM by 0%, 25% and 50%. Barramundi fry (initial body weight 2.5 ± 0.1 g) were fed experimental diets for 21 days to assess growth performance, gut microbiome composition and gut histopathology...
June 24, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38899543/comparative-pathogenicity-and-histopathological-analysis-of-edwardsiella-anguillarum-intraperitoneal-infection-in-milkfish-chanos-chanos-nile-tilapia-oreochromis-niloticus-and-asian-seabass-lates-calcarifer
#16
JOURNAL ARTICLE
Atiek Rahmawaty, Li-Wu Cheng, Pei-Chi Wang, Shih-Chu Chen
Edwardsiella anguillarum, a highly virulent species within the Edwardsiella genus, causes significant mortality in milkfish farms in Taiwan. This study aimed to investigate the comparison of milkfish susceptibility, a newly identified host species in Taiwanese aquaculture, with other species Nile tilapia (Oreochromis niloticus) and Asian seabass (Lates calcarifer), to E. anguillarum, elucidating its pathogenicity across both seawater and freshwater aquaculture environments. The results showed milkfish exhibited the highest mortality rate of 85% within 48 h of infection, whereas Nile tilapia exhibited a mortality rate of 70% between the second- and tenth-day post challenge, and seabass exhibited a mortality rate of 25% between the second- and sixth-day post challenge...
June 20, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38879869/candida-manassasensis-caused-mass-mortality-for-hybrid-sturgeon-acipenser-baerii-%C3%A2-%C3%A2-%C3%A3-%C3%A2-acipenser-schrenckii-%C3%A2-cultured-in-northern-vietnam-a-case-report
#17
JOURNAL ARTICLE
Truong Dinh Hoai, Xa Duc Binh, Doan Thi Nhinh, Nguyen Thi Huong Giang
No abstract text is available yet for this article.
June 16, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38879868/the-hanks-like-serine-threonine-protein-kinase-yihe-is-crucial-for-aeromonas-veronii-virulence-and-adhesion
#18
JOURNAL ARTICLE
Dongjie Shi, Bintong Yang, Tong Zhao, Wenchao Sun, Haiying Cui, Yuanhuan Kang
Aeromonas veronii is an important pathogen found in various aquatic environments and products, posing a threat to public health. The Hanks-like serine/threonine protein kinase is closely linked to the pathogenesis of pathogenic bacteria, but the exact role of YihE in A. veronii remains still unknown. To study the specific function of the YihE kinase, we constructed a knockout mutant of the yihE gene in A. veronii. The deletion of the yihE gene resulted in changes to the metabolism of L-arginine-AMC and acetic acid, as well as enhanced resistance to ampicillin and kanamycin in A...
June 16, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38879867/immunological-effects-of-dna-vaccination-and-interleukin-utilization-as-an-adjuvant-in-astyanax-lacustris-immunized-against-ichthyophthirius-multifiliis
#19
JOURNAL ARTICLE
Caroline Munhoz Meira, Mateus Maldonado Carriero, Nycolas Levy Pereira, Pedro Gustavo Macedo Rihs, Talita Maria Lázaro, Nathalia Raissa Alcântara Rocha, Antonio Augusto Mendes Maia
The increasing significance of the aquaculture sector and commercially valuable species underscores the need to develop alternatives for controlling diseases such as Ichthyophthirius multifiliis-induced ichthyophthiriasis. This ciliated protozoan parasite threatens nearly all freshwater fish species, causing substantial losses in the fishery industry. Despite this, effective large-scale treatments are lacking, emphasizing the necessity of adopting preventive strategies. While the pathogenesis of ichthyophthiriasis and its immune stimulation allows for vaccination strategies, precise adjustments are crucial to ensure the production of an effective vaccine compound...
June 16, 2024: Journal of Fish Diseases
https://read.qxmd.com/read/38875104/the-battle-against-the-introduced-pathogenic-monogenean-gyrodactylus-salaris-in-norwegian-atlantic-salmon-rivers-and-fish-farms
#20
REVIEW
Tor Atle Mo
The introduced salmonid ectoparasite Gyrodactylus salaris has been detected on Atlantic salmon in 53 Norwegian rivers and in 39 Norwegian fish farms. In affected rivers, the mortality of Atlantic salmon juveniles is very high, estimated to a mean of 86%. G. salaris has been considered one of the biggest threats to wild Norwegian Atlantic salmon stocks. With various measures, the authorities have reduced the potential for further spread of the parasite to new rivers and fish farms, and G. salaris has been eradicated from 43 rivers and all fish farms...
June 14, 2024: Journal of Fish Diseases
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