Download Bacterial Fish Pathogens: Disease of Farmed and Wild Fish by B. Austin PDF

By B. Austin

This 4th, revised variation of Bacterial Fish Pathogens fills the necessity for an up to date finished publication at the organic points of the bacterial taxa which reason disorder in fish. because the third version used to be released in 1999, a lot has replaced within the regulate of sickness of farmed and wild fish. Many extra medical articles approximately bacterial fish pathogens were released, describing such new pathogens as Pasteurella skyensis, and antimicrobial compounds for the keep an eye on of illness were changed by means of replacement tools, comparable to using probiotics. This up-to-date e-book analyses all of the new details, together with that on new pathogens and new advancements on lengthy validated ailments, similar to furunculosis and vibriosis. attention is given to all the bacterial taxa that have at it slow been suggested as fish pathogens, whether or not they are secondary invaders of already broken tissue or severe, fundamental pathogens.

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Extra resources for Bacterial Fish Pathogens: Disease of Farmed and Wild Fish (Springer Praxis Books / Environmental Sciences)

Example text

Diseased fish displayed signs of haemorrhagic septicaemia, namely haemorrhages on the body, intestine filled with bloody exudate, enlarged liver and spleen, and liquefying kidney. Subsequently, the organism has been associated with eye disease and haemorrhagic septicaemia in farmed rainbow trout from Kenya (Ogara et aL, 1998). Aeromonas hydrophila Since its initial recognition as the causal agent of haemorrhagic septicaemia (Sanarelli, 1891; Schaperclaus, 1930; Haley et aL, 1967), Aer. g. ulcer disease of cod (Larsen and Jensen, 1977).

Flavobacterium johnsoniae In the initial outbreak in Queensland, Australia, 2-5% mortalities occurred in farmed barramundi, Lates calcarifer, over a 2-week period when the water temperature was 27-28°C. The fish were Hstless, anorexic, and displayed elevated scales and superficial erosion of the skin (particularly on the posterior flank). Some fish presented eroded pectoral fins and lower jaws (Carson et aL, 1993). Flavobacterium psychrophilum Although this organism is mostly associated with infections in salmonids, other fish species have been infected, for example sea lamprey (Elsayed et aL, 2006), and ayu has been challenged successfully by immersion (Miwa and Nakayasu, 2005).

Planococcaceae representative Planococcus sp. The organism has been associated with small off-white (2-4 mm diameter) round recessed spots on the heads of Atlantic salmon (Austin et ai, 1988). In large rainbow trout (average weight = 500 g), the only disease sign was the presence of watery kidney and small amounts of ascitic fluid in the peritoneal cavity (B. Austin, unpublished data). In addition, during 1990 the organism was associated with two populations of rainbow trout fry deemed to have RTFS.

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