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Edwardsiella tarda outbreak affecting fishes and aquatic birds in Brazil

Published on Jan 1, 2018in Veterinary Quarterly 2.34
· DOI :10.1080/01652176.2018.1540070
Yamê Miniero Davies1
Estimated H-index: 1
(USP: University of São Paulo),
Maria Gabriela Xavier de Oliveira4
Estimated H-index: 4
(USP: University of São Paulo)
+ 10 AuthorsTerezinha Knöbl (USP: University of São Paulo)
AbstractBackground: Edwardsiella tarda infections are frequent causes of severe outbreaks in the fish farming industry besides representing possible zoonotic risks. However, naturally occurring outbreaks that affect various species besides fishes are seldom described.Aim: To report an outbreak of acute mortality caused by E. tarda affecting multiple species that inhabited a natural pond in the state of Sao Paulo, Brazil.Materials and methods: Three adult tilapias, three Mallard ducks and one Snow egret were necropsied and subjected to further microbiological tests. Gross and microscopic lesions were documented. The antibiotic susceptibility and phylogenetic similarities among fish and avian strains were also determined. The E. tarda species was confirmed through MALDI-TOF, partial sodB sequencing and phylogenetic analysis.Results: Macroscopical findings between the three species included intestinal dilatation, mucosal hyperaemia and mucous to liquid contents. Common histopathology findings included acute ...
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Published on Feb 11, 2018in Veterinarni Medicina 0.64
L. Novotny5
Estimated H-index: 5
L. Dvorska22
Estimated H-index: 22
+ 2 AuthorsI. Pavlik28
Estimated H-index: 28
Published on Jul 1, 2014in Aquaculture 3.02
Tingting Xu2
Estimated H-index: 2
(Ocean University of China),
Xiao-Hua Zhang25
Estimated H-index: 25
(Ocean University of China)
Abstract Edwardsiella tarda is a Gram-negative intracellular pathogen accounting for enormous economic losses in cultured seawater and freshwater fish. Infection by E. tarda often leads to the development of a systematic disease called edwardsiellosis, characterized by symptoms of ascites, hernia, exophthalmia, and severe lesions of internal organs. Although edwardsiellosis has been studied for many years, however, the major virulence factors of E. tarda are still poorly understood. In addition,...
Published on Apr 1, 2012in Journal of Microbiological Methods 1.80
Peter Kuhnert43
Estimated H-index: 43
(University of Bern),
Magne Bisgaard37
Estimated H-index: 37
(UCPH: University of Copenhagen)
+ 3 AuthorsJoachim Frey52
Estimated H-index: 52
(University of Bern)
Species of the family Pasteurellaceae play an important role as primary or opportunistic animal pathogens. In veterinary diagnostic laboratories identification of this group of bacteria is mainly done by phenotypic assays while genetic identification based on housekeeping genes is mostly used for research and particularly important diagnostic samples. MALDI-TOF MS seems to represent a promising alternative to the currently practiced cumbersome, phenotypic diagnostics carried out in many veterina...
Published on Jan 1, 2012in Microbes and Infection 2.67
Ka Yin Leung27
Estimated H-index: 27
(Trinity Western University),
Bupe A. Siame3
Estimated H-index: 3
(Trinity Western University)
+ 2 AuthorsYu-Keung Mok23
Estimated H-index: 23
(NUS: National University of Singapore)
Abstract Human Edwardsiella tarda infections often manifest as gastroenteritis, but can become systemic and potentially lethal. E. tarda uses virulence factors that include type III and type VI secretion systems, quorum sensing, two-component systems, and exoenzymes to gain entry into and survive within the host. Better understanding of interactions between these factors will lead to the development of novel antimicrobials against E. tarda and other enterics.
Published on Jan 1, 2012in Veterinary Research 3.12
Seong Bin Park13
Estimated H-index: 13
(Gyeongsang National University),
Takashi Aoki18
Estimated H-index: 18
(Waseda University),
Tae Sung Jung24
Estimated H-index: 24
(Gyeongsang National University)
Edwardsiella tarda is one of the serious fish pathogens, infecting both cultured and wild fish species. Research on edwardsiellosis has revealed that E. tarda has a broad host range and geographic distribution, and contains important virulence factors that enhance bacterial survival and pathogenesis in hosts. Although recent progress in edwardsiellosis research has enabled the development of numerous, highly effective vaccine candidates, these efforts have not been translated into a commercializ...
Published on Oct 1, 2011in Molecular Biology and Evolution 14.80
Koichiro Tamura28
Estimated H-index: 28
(ASU: Arizona State University),
Daniel S. Peterson14
Estimated H-index: 14
(ASU: Arizona State University)
+ 3 AuthorsSudhir Kumar63
Estimated H-index: 63
(ASU: Arizona State University)
Comparative analysis of molecular sequence data is essential for reconstructing the evolutionary histories of species and inferring the nature and extent of selective forces shaping the evolution of genes and species. Here, we announce the release of Molecular Evolutionary Genetics Analysis version 5 (MEGA5), which is a user-friendly software for mining online databases, building sequence alignments and phylogenetic trees, and using methods of evolutionary bioinformatics in basic biology, biomed...
Published on May 1, 2009in Polar Biology 2.00
Gerardo A. Leotta15
Estimated H-index: 15
(UNLP: National University of La Plata),
Pablo Piñeyro15
Estimated H-index: 15
(UNLP: National University of La Plata)
+ 1 AuthorsG. B. Vigo11
Estimated H-index: 11
(UNLP: National University of La Plata)
For many years, the Antarctic region has been isolated from human activity. However, there is little data available regarding endemic and exotic diseases. The purpose of this work was to determine the prevalence of Edwardsiella tarda in Antarctic wildlife, including birds, mammals and fish. During the summer of 2000 and 2002 in the Potter Peninsula, and during the summer of 2001 and 2003 in Hope Bay, a total of 1,805 faecal samples from Antarctic animals and 50 infertile eggs of Adelie penguins ...
Published on Nov 28, 2007in Journal of Biosciences 1.82
B.R. Mohanty2
Estimated H-index: 2
(Central Institute of Freshwater Aquaculture),
P.K. Sahoo8
Estimated H-index: 8
(Central Institute of Freshwater Aquaculture)
Edwardsiellosis is one of the most important bacterial diseases in fish. Scientific work on this disease started more than forty years ago and numerous workers around the world are continually adding to the knowledge of the disease. In spite of this, not a single article that reviews the enormous scientific data thus generated is available in the English language. This article briefly discusses some of the recent research on edwardsiellosis, describing the pathogen’s interaction with the host an...
Published on Oct 1, 2002in Veterinary Microbiology 2.79
C Nucci1
Estimated H-index: 1
(State University of Campinas),
W.D. da Silveira4
Estimated H-index: 4
(State University of Campinas)
+ 4 AuthorsA.F. Pestana de Castro9
Estimated H-index: 9
(USP: University of São Paulo)
Abstract It is difficult to use tissue culture assays to investigate adherence and other properties of Edwardsiella tarda because the organism is invasive and produces a potent hemolysin. We therefore relied on polymerase chain reaction (PCR) to determine the occurrence of genes for enterotoxins (LT-I, EAST-1), Shiga toxin (Stx-1, Stx-2), cytotoxic necrotizing factors (CNF-1, CNF-2), aerobactin, invasion plasmid of enteroinvasive Escherichia coli , EPEC adherence factor (EAF), intimin (Eae), ent...
Muratori Mc1
Estimated H-index: 1
(Universal Forest Products),
N.E. Martins5
Estimated H-index: 5
(UFMG: Universidade Federal de Minas Gerais)
+ 5 AuthorsRomário Cerqueira Leite21
Estimated H-index: 21
(UFMG: Universidade Federal de Minas Gerais)
A rural property was observed for one year to obtain seasonal observations of Edwardsiella septicemia in tilapias (Oreochromis sp.) from an integrated fish farm (using pig excrements as food). Fifty tilapias on summer, forty-five on autumn, fifty-five on winter and one hundred and five on spring were collected and evaluated microbiologically for the presence of Edwardsiella tarda. Samples of the external surface (skin, gills and fin), intestines and muscle were analyzed. Fishes were transported ...
Cited By0
Published on Jul 1, 2019in Aquaculture 3.02
Víctor Alfonso Castañeda-Monsalve (National University of Colombia), Howard Junca20
Estimated H-index: 20
+ 2 AuthorsClaudia Ximena Moreno-Herrera2
Estimated H-index: 2
(National University of Colombia)
Abstract The bacterial communities associated to the gastrointestinal tract in fish, are involved in physiology, development, and immune responses against pathogenic bacteria. However, for Piaractus brachypomus (White Cachama) a tropical fresh water fish from the Amazonas and Orinoco basins and the second most produced fish in Colombia, these communities are still largely unknown. The study of bacterial communities and how they are affected have increased in fish with economic value. In this stu...
Published in Frontiers in Immunology 4.72
Ming Jiang (SYSU: Sun Yat-sen University), Zhuang-gui Chen1
Estimated H-index: 1
(SYSU: Sun Yat-sen University)
+ -3 AuthorsBo Peng14
Estimated H-index: 14
(SYSU: Sun Yat-sen University)
Temperature is one of the major climate factors that affects the outbreak of infectious disease. Lines of evidences have shown that virulence factors can be controlled by thermo-sensors in bacterial pathogens. However, how temperature influence host’s responses to the pathogen is still largely unexplored, and the study on which might pave the way to develop strategies to manage pathogenic bacterial infection. In the present study, we show that finfish Carassius carassius, the crucian carp that i...