Epizootic Ulcerative Syndrome: Information up to 1997.

Chinabut, Supranee

doi:10.3147/jsfp.33.321

Cited by 21 publications

(14 citation statements)

References 16 publications

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“…A. astaci, which has been described by Schikora (1903), infects freshwater crayfish (Söderhäll and Cerenius, 1999). Both A. invadans and A. piscicida devastated natural and cultured stocks of freshwater and estuarine fish (Chinabut, 1998;Johnson et al, 2004). Some authors confirmed this both species as synonym (Dieguez-Uribeondo et al, 2009), others-as separate species (Phadee et al, 2004a, b).…”

Section: Discussionsupporting

confidence: 53%

“…Aphanomyces astaci is known to cause so-called "plague" of crayfish (Schikora, 1903) and A. laevis known in mass deaths of rainbow trout during reproduction on the Taiwan (Chien, 1981). Since the mid-1980s epizootic ulcerative syndrome (EUS) have been described as a disease affecting wild and farmed freshwater and estuarine fish (Chinabut, 1998). It has been reported from Australia, North America, Asia and Africa (OIE, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Ecological diversity and economical importance of species from Aphanomyces genus

Czeczuga¹,

Ewa²,

Adrianna³

2015

Afr. J. Agric. Res.

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Species from Aphanomyces genus were investigated in 225 limnologically and trophically different water bodies (springs, rivers, ponds and lakes) as well as in humid soils of north-eastern Poland. Distribution of particular species and their role in diverse ecosystems has been investigated. Thirty taxa, including: 2 species of cultivated parasitic plants, 3 species of parasitic animals, 6 saprotrophic species and 5 species of saprotrophic/ opportunistic species were recorded. Some of Aphanomyces species occurred also as parasites of algae, straminipiles and invertebrates. Among parasitic species: A. cochlioides, A. euteiches (cultivated plant parasite), A. astaci (crayfish parasite), A. piscicida (fish parasite) playing economically important role were found. Amino acid, carbohydrate and urease assimilation tests were used.

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Section: Discussionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Ecological diversity and economical importance of species from Aphanomyces genus

Czeczuga¹,

Ewa²,

Adrianna³

2015

Afr. J. Agric. Res.

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“…In Bangladesh, the losses in fish mortality amounted to about US$5.6 million (ADB/NACA, 1991). A number of comprehensive reviews on economic loss and impact aspect of EUS were reported (Roberts et al, 1993;Noga, 1993;Chinabut, et al, 1995;Roberts, 1997;Chinabut, 1998;Lilley et al 1998), besides EUS has listed by the Network of Aquaculture Centers in Asia-pacific (NACA) and internationally by the World Organization for Animal Health (Office International des Epizooties or OIE) (AFFA, 2000;FAO, 2009;Pradhan et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Emergence of the Epizootic Ulcerative Syndrome in Pond Reared Carp Fish (Cyprinids) and It's Control Measure in Chitwan, Central Nepal

Rayamajhi

Shrestha

Prasad³

2017

Int J Appl Sci Biotechnol

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A survey on epizootic ulcerative syndrome (EUS) was carried in carp fish (cyprinids) reared in ponds during January 2016 to January 2017 at six locations of Chitwan, Nepal. Outbreaks of EUS were observed in 39.6% of the carp during winter. EUS infection was the most for Cirrhinus mrigala (47.3% of the 170 samples) and the least for Labeo rohita (12.3% of the 65 samples). EUS infected fish weighing range between 15g-300g were characterized as extensive deep ulceration on head, dorsal and lateral part of body and at caudal peduncle region. Histopathology examination of affected tissue of skin with adjacent muscles showed mycotic granulomas indicated a positive diagnosis for EUS. Survey results indicate that poor water quality in undrained ponds, uncontrolled entry of flooded water into the pond, runoff water from adjacent paddy field and use of contaminated equipment and seine nets were found to trigger risk for EUS infection in carp pond. Impact assessment of EUS showed that average economic loss due to EUS fish disease was 2257.92 kg/ha / year (33.01%) of the expected production. The highest economic loss of 1432.14 kg/ ha/year (53.53%) was estimated for large farm and lowest loss of 950 kg/ha/year (5%) for medium size farm. The simultaneous application of Ciphalexin in feed at 80mg.kg -1 biomass of fish for 15 consecutive days and two applications of Kohrsolin-TH at 900 ml/ha (1 m pond depth water) at weekly interval was found effective to control EUS infection in carps. The combined efficacy of these two drugs was estimated to be 97.7% control of EUS infection in carp fish.

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“…The etiology for this disease may involve multiple pathogens; however, most consistently, Aphanomyces invadans (Family: Leptolegniaceae) has been isolated from lesioned fishes in the USA (Blazer et al 1999, 2002, Vandersea et al 2006, Sosa et al 2007b. A. invadans is an oomycete that is widespread in distribution and has been linked with cases of EUS since it was first documented in Japan in 1971 (Chinabut 1998, Lilley et al 1998. While most severe cases of EUS in southeast Asia and Australia are reported from aquaculture facilities, those in the USA are almost exclusively reported from wild-caught fishes (Dykstra et al 1989, Noga et al 1991, Blazer et al 1999.…”

Section: Introductionmentioning

confidence: 99%

Epizootic ulcerative syndrome caused by Aphanomyces invadans in captive bullseye snakehead Channa marulius collected from south Florida, USA

Saylor¹,

Miller²,

Vandersea³

et al. 2010

Dis. Aquat. Org.

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Epizootic ulcerative syndrome (EUS) caused by the oomycete Aphanomyces invadans is an invasive, opportunistic disease of both freshwater and estuarine fishes. Originally documented as the cause of mycotic granulomatosis of ornamental fishes in Japan and as the cause of EUS of fishes in southeast Asia and Australia, this pathogen is also present in estuaries and freshwater bodies of the Atlantic and gulf coasts of the USA. We describe a mass mortality event of 343 captive juvenile bullseye snakehead Channa marulius collected from freshwater canals in Miami-Dade County, Florida. Clinical signs appeared within the first 2 d of captivity and included petechiae, ulceration, erratic swimming, and inappetence. Histological examination revealed hyphae invading from the skin lesions deep into the musculature and internal organs. Species identification was confirmed using a species-specific PCR assay. Despite therapeutic attempts, 100% mortality occurred. This represents the first documented case of EUS in bullseye snakehead fish collected from waters in the USA. Future investigation of the distribution and prevalence of A. invadans within the bullseye snakehead range in south Florida may give insight into this pathogen-host system. KEY WORDS: Epizootic ulcerative syndrome · Mycotic dermatitis · Mycotic myositis · Non-native fish species · Oomycete · Water mold Resale or republication not permitted without written consent of the publisherDis Aquat Org 88: [169][170][171][172][173][174][175] 2010 are almost exclusively reported from wild-caught fishes (Dykstra et al. 1989, Noga et al. 1991, Blazer et al. 1999. In 1984, the first confirmed cases of EUS in the USA were documented in Atlantic menhaden Brevoortia tyrannus from estuaries of North Carolina (Dykstra et al. 1986). Since 1984, fish exhibiting ulcerative lesions typical of A. invadans infection have been documented in estuaries and rivers of the Atlantic coast from Long Island to Florida (Blazer et al. 2002, Hawke et al. 2003. Most recently, Sosa et al. (2007b) documented A. invadans infection of 21 species of fish collected from estuarine and freshwater systems throughout Florida.Aphanomyces invadans is an opportunistic pathogen that can be highly invasive, gaining entry through surface wounds or an otherwise compromised mucus barrier. In challenge studies, mortality associated with EUS is high and may approach 100% (Kiryu et al. 2003, Johnson et al. 2004, Sosa et al. 2007a). Cases of EUS in snakeheads (Family: Channidae) have previously been documented in southeast Asia (Lilley et al. 1998). Treatment is only applicable to captive animals and often has limited success because some antifungal agents (e.g. malachite green and formalin) are toxic to the fish or do not penetrate the body deeply enough to reach the pathogen, which invades deep into the muscle tissue and internal organs (Campbell et al. 2001).Snakeheads are a group of freshwater, air-breathing fish, consisting of approximately 30 species in 2 genera, Channa and Parachanna. The former is ...

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Epizootic Ulcerative Syndrome: Information up to 1997.

Cited by 21 publications

References 16 publications

Ecological diversity and economical importance of species from Aphanomyces genus

Ecological diversity and economical importance of species from Aphanomyces genus

Emergence of the Epizootic Ulcerative Syndrome in Pond Reared Carp Fish (Cyprinids) and It's Control Measure in Chitwan, Central Nepal

Epizootic ulcerative syndrome caused by Aphanomyces invadans in captive bullseye snakehead Channa marulius collected from south Florida, USA

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