Identification of <i>Edwardsiella ictaluri</i> from diseased freshwater catfish, <i>Pangasius hypophthalmus</i> (Sauvage), cultured in the Mekong Delta, Vietnam

Crumlish, Margaret; Dung, Từ Thanh; Turnbull, James; Ngọc, Ngô Trương; Ferguson, H. W.

doi:10.1046/j.1365-2761.2002.00412.x

Cited by 122 publications

(122 citation statements)

References 10 publications

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“…ictaluri has caused ESC in ictalurids such as channel catfish, blue catfish I. furcatus, white catfish Ameiurus catus, brown bullhead A. nebulosus, walking catfish Clarias batrachus and striped catfish Pangasius hypophthalmus in the United States (Hawke et al, 1981;Plumb, 1999), Vietnam (Ferguson et al, 2001;Crumlish et al, 2002), Thailand (Kasornchandra et al, 1987) and Indonesia (Yuasa et al, 2003). Although naturally occurring disease has also been reported in some freshwater ornamental species, i.e.…”

Section: Discussionmentioning

confidence: 99%

Outbreaks of Edwardsiella ictaluri Infection in Ayu Plecoglossus altivelis in Japanese Rivers

et al. 2008

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ABSTRACT-From middle August to early October in 2007, mortalities in wild ayuPlecoglossus altivelis occurred in the rivers of Tokyo Metropolis, Yamaguchi Prefecture and Hiroshima Prefecture, Japan. Hemorrhagic ascites was observed in almost all the examined fish. Some fish showed reddening of body surface, anus or bases of fins and exophthalmos. A single species of bacteria was isolated from the kidney, spleen and ascites of all the examined fish and identified as Edwardsiella ictaluri. Pathogenicity against ayu of the bacterial isolates was demonstrated by experimental infections, with the LD 50 being approximately 10 4 CFU/fish. The dead fish exhibited similar disease signs to those of naturally affected fish. From these results, it was concluded that the present mortality of wild ayu was caused by E. ictaluri infection. This is the first report on E. ictaluri infection of fish in Japan.

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Section: Discussionmentioning

confidence: 99%

Outbreaks of Edwardsiella ictaluri Infection in Ayu Plecoglossus altivelis in Japanese Rivers

et al. 2008

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“…As cited before, ESC has a fairly limited geographical distribution, the United States and Southeast Asian countries, and furthermore E. ictaluri has a considerably narrow host range than other warm-water fish pathogenic bacteria (Plumb, 1999). E. ictaluri has been mostly isolated from affected catfish species; channel catfish Ictalurus punctatus, blue catfish I. furcatus, white catfish Ameiurus catus, brown bullhead A. nebulosus, walking catfish Clarias batrachus and striped catfish Pangasius hypophthalmus (Plumb, 1999;Crumlish et al, 2002), except for a few ornamental fishes (Humphrey et al, 1986;Plumb, 1999) and one salmonid fish, rainbow trout Oncorhynchus mykiss (Keskin et al, 2004). Therefore, ayu in the present study is a new host species of E. ictaluri.…”

Section: Genetic Analysismentioning

confidence: 99%

“…E. ictaluri (Hawke et al, 1981) is the causative agent of enteric septicemia of catfish (ESC), the most important disease for economic loss in cultured channel catfish Ictalurus punctatus in the United States (Plumb, 1999). E. ictaluri was also isolated from some cultured freshwater catfish species in Thailand (Kasornchandra et al, 1987), Vietnam (Crumlish et al, 2002) and Indonesia (Yuasa et al, 2003). However, there have been no reports on isolation of the bacterium in Japan.…”

mentioning

confidence: 99%

Characterization of Edwardsiella ictaluri Isolated from Wild Ayu Plecoglossus altivelis in Japan

et al. 2008

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ABSTRACT-A Gram-negative bacterium was isolated from diseased wild ayu Plecoglossus altivelis, which were caught in rivers in Japan from August to October in 2007. All four isolates examined showed the same morphological, physiological and biochemical characteristics and were classified into the genus Edwardsiella. The isolates were differentiated from E. tarda in respect of its negative production of indole and no growth at 37°C, and different from a reference strain of E. ictaluri (JCM1680) in its positive production of hydrogen sulfide. All isolates were completely identical in the partial nucleotide sequences of 16S rDNA, a type 1 fimbrial gene (etfA) and a heat shock protein gene (dnaJ), and these sequences showed high similarity (100%, 99.7% and 100%, respectively) with E. ictaluri but low similarity (99.7%, 92.5% and 87.3%, respectively) with E. tarda. Based on these phenotypic and genetic characteristics, the present isolates from ayu were identified as E. ictaluri.

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“…Natural infections with this enteric pathogen have been observed in channel catfish, white catfish Ameiurus catus, black bullhead A. melas, yellow bullhead A. natalis, brown bullhead A. nebulosus, striped catfish Pangasius hypophthalmus (Crumlish et al 2002, Yuasa et al 2003 and walking catfish Clarius batrachus (Kasornchandra et al 1987).…”

Section: Introductionmentioning

confidence: 99%

Mortality and pathology in brown bullheads Amieurus nebulosus associated with a spontaneous Edwardsiella ictaluri outbreak under tank culture conditions

Iwanowicz¹,

Griffin²,

Cartwright³

et al. 2006

Dis. Aquat. Org.

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Identification of Edwardsiella ictaluri from diseased freshwater catfish, Pangasius hypophthalmus (Sauvage), cultured in the Mekong Delta, Vietnam

Cited by 122 publications

References 10 publications

Outbreaks of Edwardsiella ictaluri Infection in Ayu Plecoglossus altivelis in Japanese Rivers

Outbreaks of Edwardsiella ictaluri Infection in Ayu Plecoglossus altivelis in Japanese Rivers

Characterization of Edwardsiella ictaluri Isolated from Wild Ayu Plecoglossus altivelis in Japan

Mortality and pathology in brown bullheads Amieurus nebulosus associated with a spontaneous Edwardsiella ictaluri outbreak under tank culture conditions

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