Bacterial Fish Pathogens: Disease of Farmed and Wild Fish by Brian Austin, Dawn A. Austin

By Brian Austin, Dawn A. Austin

This revised version fills the necessity for an up to date accomplished ebook at the organic elements of the bacterial taxa which reason ailment in fish. because the third variation was once released in 1999, a lot has replaced within the regulate of affliction of farmed and wild fish. This e-book analyses the entire new details, together with that on new pathogens and new advancements on lengthy tested illnesses, corresponding to furunculosis and vibriosis. attention is given to the entire bacterial taxa that have at it slow been stated as fish pathogens, whether or not they are secondary invaders of already broken tissue or critical, fundamental pathogens.

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Extra info for Bacterial Fish Pathogens: Disease of Farmed and Wild Fish

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Disease signs, which were more severe during summer, included weight loss, haemorrhaging on the anal and pectoral fins, petechial haemorrhages on the abdomen, bilateral exophthalmia, haemorrhaging and pus in the eyes, pale liver, congested kidney and spleen, ascites, and mucohaemorrhagic enteritis (Domenech et ai, 1996). , where it occurred in hatchery-reared brown trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) (Belding and Merrill, 1935). Additional evidence indicated the presence of BKD in chinook salmon {Oncorhynchus tshawytscha), coho salmon (O.

At 20-23°C, mortalities occurred in 3 days, whereas at 12-20°C, the deaths ensued in 8 days (Bejerano et al, 1979). Salmonella enterica subsp. arizonae A pirarucu was deemed to have died of a septicaemic condition. Externally, there was minimal evidence of disease, with the eyes (corneas) displaying opacity. A bloody exudate was found in the body cavity. Lesions and congestions were recorded in the mucus membranes of the stomach and intestine (Kodama et al, 1987). Serratia liquefaciem Moribund fish did not display any external signs of disease.

Agalactiae, was recovered from diseased cultured silver pomfret in Kuwait (Duremdez et ai, 2004). Here, the disease signs included inappetence, lethargy, swollen abdomen, the stomach and intestine filled with a gelatinous or yellowish fluid, and in some fish slight haemorrhaging in the eye, exophthalmia and corneal opacity. Also, the liver was enlarged, there was evidence of congestion of the kidney and spleen, and fluid occurred in the peritoneal cavity (Duremdez et ai, 2004). Streptococcus iniae (= Str.

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