Veterinary Medicine

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

By B. Austin

This 4th, revised variation of Bacterial Fish Pathogens fills the necessity for an updated accomplished booklet at the organic elements of the bacterial taxa which reason illness in fish. because the third variation used to be released in 1999, a lot has replaced within the keep an eye on of illness 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 disorder were changed via replacement tools, corresponding to using probiotics. This up-to-date booklet analyses all of the new info, together with that on new pathogens and new advancements on lengthy confirmed ailments, equivalent to furunculosis and vibriosis. attention is given to all the bacterial taxa that have at your time been said as fish pathogens, whether or not they are secondary invaders of already broken tissue or critical, 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

Staphylococcaceae representatives Staphylococcus aureus Dead animals displayed pronounced eye disease, with the cornea becoming reddish, due to vascularisation, and then opaque. Thereafter, there was degeneration of the eye tissues, leaving a hollow cup. The brain and optic nerves were affected. In addition, diseased fish became lethargic and darker in colour (= melanosis). The internal organs did not appear to be affected (Shah and Tyagi, 1986). Staphylococcus epidermidis The initial description of the disease was not exhaustive, but typical signs included exophthalmia, congestion and ulceration on the tail (Kusuda and Sugiyama, 1981).

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These lesions degenerate into ulcers (Hikida et aL, 1979; Wakabayashi et aL, 1984). Black patch necrosis of Dover sole in Scotland and bacterial stomatitis (= mouth rot) of Atlantic salmon in Canada has been attributed to this pathogen (Bernardet et aL, 1990; Ostland et aL, 1999). Tenacibaculum ovolyticum T. ovolyticum led to mortahties among halibut eggs and larvae. The chorion became dissolved, and the underlying zona radiata was damaged by exotoxins resulting in puncturing of the egg, leakage of cell constituents and larval death (Hansen et aL, 1992).

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