Expression profiles of NODs in channel catfish (Ictalurus punctatus) after infection with Edwardsiella tarda, Aeromonas hydrophila, Streptococcus iniae and channel catfish hemorrhage reovirus

2012 ◽  
Vol 33 (4) ◽  
pp. 1033-1041 ◽  
Author(s):  
Min Li ◽  
Qi-long Wang ◽  
Yang Lu ◽  
Song-lin Chen ◽  
Qi Li ◽  
...  
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Aeromonas Hydrophila ◽  
Expression Profiles ◽  
Edwardsiella Tarda ◽  
Streptococcus Iniae

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
United States ◽  
Body Condition ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Aeromonas Hydrophila ◽  
Condition Index ◽  
The United States ◽  
Southern United States ◽  
Conservation Ecology ◽  
Columnaris Disease

<em>Abstract</em>.—U.S. Game and Fish agencies and farm-pond owners throughout the United States use commercially produced channel catfish <em>Ictalurus punctatus </em>fingerlings transported from the southern United States for supplemental stocking. We conducted six trials to examine whether pathogen load, body condition, and select environmental factors influence fingerling survival following transport and cage stocking. Fingerlings were sampled prior to stocking and weekly for the following 3 weeks. Weights and lengths were measured, and a relative condition index was used to quantify body condition. Skin scrapings and gill clippings were examined microscopically for pathogens, and posterior kidney was assayed for <em>Aeromonas hydrophila</em>. Mortality was either less than 10% (four trials) or catastrophic (two trials). A Columnaris disease epizootic was associated with ~50% mortality in one trial, and a red sore disease epizootic was associated with ~80% mortality in another. Body condition or other pathogens, present initially or acquired in study ponds, were not associated with high mortality. The first week appears to be critical for the survival of channel catfish fingerlings following transport.

Experimental Edwardsiella tarda infection in nonabraded channel catfish Ictalurus punctatus by immersion

2006 ◽  
Vol 72 (5) ◽  
pp. 1124-1126 ◽  
Author(s):  
Alyssa A WIEDENMAYER ◽  
Joyce J EVANS ◽  
Phillip H KLESIUS
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Edwardsiella Tarda

scholarly journals Pathological changes in cultured channel catfish Ictalurus punctatus spontaneously infected with Streptococcus iniae

2011 ◽  
Vol 95 (3) ◽  
pp. 203-208 ◽  
Author(s):  
DF Chen ◽  
KY Wang ◽  
Y Geng ◽  
J Wang ◽  
XL Huang ◽  
...  
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Streptococcus Iniae ◽  
Pathological Changes

Mechanisms of pathogen virulence and host susceptibility in virulent Aeromonas hydrophila infections of channel catfish (Ictalurus punctatus)

Aquaculture ◽  
2018 ◽  
Vol 482 ◽  
pp. 1-8 ◽  
Author(s):  
Eric Peatman ◽  
Haitham Mohammed ◽  
Augustus Kirby ◽  
Craig A. Shoemaker ◽  
Mediha Yildirim-Aksoy ◽  
...  
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Aeromonas Hydrophila ◽  
Host Susceptibility ◽  
Pathogen Virulence ◽  
Virulent Aeromonas Hydrophila

Vitamin C and Disease Resistance in Channel Catfish (Ictalurus punctatus)

1982 ◽  
Vol 39 (7) ◽  
pp. 948-951 ◽  
Author(s):  
V. S. Durve ◽  
R. T. Lovell
Keyword(s):  
Disease Resistance ◽  
Vitamin C ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Normal Growth ◽  
Bone Collagen ◽  
Natural Resistance ◽  
Edwardsiella Tarda ◽  
Collagen Formation ◽  
Supplemental Vitamin

Channel catfish (Ictalurus punctatus) fingerlings were fed semipurified diets containing 0–150 mg/kg of vitamin C for 14 wk and subsequently at two temperature regimes infected with the pathogenic bacterium Edwardsiella tarda. Mortality rates were determined 96 h after infection. A supplemental vitamin C level of 30 mg/kg of diet was sufficient for normal growth and for prevention of deficiency signs such as lordosis, scoliosis, and a reduction in bone collagen formation. However, increased resistance against infection was provided when the level of supplemental vitamin C was increased to the highest dietary level, 150 mg/kg, at a water temperature of 23 °C. At 33 °C, increasing the supplemental level of vitamin C had significantly less effect on resistance against infection. The difference in response at the two temperatures indicates that the vitamin C requirement for resistance to infection is possibly higher when channel catfish are infected at lower temperatures, where the natural resistance is reduced, than when infected at a temperature near optimum for the natural resistance mechanisms of the fish.Key words: vitamin C, channel catfish, disease resistance, Edwardsiella tarda, infection

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