By B. Austin
This revised variation fills the necessity for an updated entire publication at the organic points of the bacterial taxa which reason illness in fish. because the third version was once released in 1999, a lot has replaced within the keep an eye on of sickness of farmed and wild fish. This publication analyses the entire new info, together with that on new pathogens and new advancements on lengthy proven illnesses, similar to furunculosis and vibriosis. attention is given to the entire bacterial taxa that have at a while been mentioned as fish pathogens, whether or not they are secondary invaders of already broken tissue or severe, basic pathogens.
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Additional info for Bacterial Fish Pathogens: Disease of Farmed and Wild Fish (Springer Praxis Books Environmental Sciences)
The kidney was normal, but the liver was discoloured (Gil et ai, 2000). GRAM-NEGATIVE BACTERIA Aeromonadaceae representatives The scientific literature abounds with references to aeromonads as fish pathogens. In addition to those discussed below, other species have been mentioned in connection with a role in fish pathology. One example is Aer. veronii which has been mentioned in terms of immunisation and an immune response in spotted sand bass (Paralabrax maculofasciatus). Infectivity data was presented but whether or not the organism is correctly identified and indeed a fish pathogen must await further study (MerinoContreras et al, 2001).
Furuncles, in the musculature. In fact, the term furunculosis is a misnomer, because the lesions do not resemble those found in the similarly named condition of human beings (McCarthy, 1975a). The name has, however, become estabhshed in the fisheries literature, so that 26 Bacterial Fish Pathogens it has been retained for convenience and to avoid the confusion which could result from a new name. The sub-acute or chronic form of furunculosis, which is more common in older fish, is characterised by lethargy, slight exophthalmia, blood-shot fins, bloody discharge from the nares and vent, and multiple haemorrhages in the muscle and other tissues.
Milkfish displayed epithehal granulomas and red/ grey nodules throughout the fish, which experienced 67% mortahties (Chang et ai, 2006). Myc. marinum was first recognised from the liver, spleen and kidney of tropical coral fish kept in the Philadelphia Aquarium (Aronson, 1926). As the name implies, the organism was considered to be only pathogenic to marine fish. But, it is now recognised to infect both marine and freshwater fish and also human beings (Van Duijn, 1981). Currently, Myc. , 2004).