farming industry for several years. The life cycle of salmon dictates that they are reared in fresh water for the initial part of their life with maturation in salt water before harvest. It is while maturing in sea cages that salmon are susceptible to attack by marine parasites. Farmed salmon are present in much higher densities compared to wild populations and the close proximity of fish leads...

In British Columbia, Canada (BC), aquaculture of finfish in ocean netpens has the potential for pathogen transmission between wild and farmed species due to the sharing of an aquatic environment. Viral hemorrhagic septicemia virus (VHSV) is enzootic in BC and causes serious disease in wild Pacific herring, Clupea pallasii, which often enter and remain in Atlantic salmon, Salmo salar, netpens. I...

quaculture of salmon constitutes a rapidly growing worldwide industry with an expanding globalized market (1,2). Although this industry has several economic benefits, according to recent reports it is also accompanied by effects that are detrimental to human and animal health and the environment (1,2). Aquaculture has been implicated in the transmission of infectious diseases. For example, in c...

Fish vary in the ability to biosynthesise n-3 long-chain polyunsaturated fatty acids (LC-PUFA), with marine fish such as cod being inefficient in comparison to freshwater and salmonid fish. We investigated differences in the gene promoters of Delta6 fatty acyl desaturase (Delta6 FAD), a critical enzyme in LC-PUFA biosynthesis, in cod and salmon. Progressive deletions and targeted mutations of t...

Ž . The replacement of fish meal protein with soybean meal SB or protein concentrates made Ž . Ž . from narrow-leafed lupin LP or field peas PP was investigated in extruded feeds for Atlantic Ž . salmon. Salmon 47 g were fed for 63 days on extruded feeds containing each of the plant meals to replace 25% and 33% of the fish meal protein and performance compared against a nutritionally Ž . balanc...

Apurinic/apyrimidinic (AP) sites are frequently observed DNA lesions when cells are exposed to hydroxyl radicals. We developed a new method for measurement of the antioxidative activity of foods using the occurrence frequency of AP sites on DNA. Combined with the electron spin resonance (ESR) method as a standard method, we examined whether fish and soy sauces including puffer fish [Takifugu ru...

Merced River Hatchery (MRH) juvenile Chinook salmon, from tagged lots used in the 2005 Vernalis Adaptive Management Program (VAMP) study, were brought to the California-Nevada Fish Health Center wet lab 6 days prior to the first VAMP release and reared for 50 days at water temperatures similar to the San Joaquin River. At the time of transport, a fish health inspection showed that the populatio...

Many studies with fin fish have demonstrated the potential to use alternative dietary protein sources to fish meal based on growth responses, although these trials mostly neglect to determine if such protein sources affect immune function. This study investigated the effect of fish meal replacement with dehulled lupin meal (LPN) or hydrolysed poultry feather meal (FTH). Atlantic salmon (Salmo s...

Iran contributes to the stock enhancement of several economically valuable fish species, including the Caspian salmon, S. trutta caspius, by producing and releasing millions of fingerlings into the sea. This work was conducted to determine the production costs of the Caspian salmon fingerlings in the years 2002 and 2003. For this purpose, a questionnaire was prepared and filled in by an expert ...

in order to determine the effects of fish size and weight on its salinity tolerance, the chloride cells (ccs) immunolocalization changes were examined in caspian salmon (salmo trutta caspius) parrs, with the same age (about 2 years old) but different types (type a: 4.88 g, 8.36 cm; type b: 14 g, 11.84 cm; type c: 24.05 g, 14.08 cm). fish survival rate, blood osmolality, gills ccs histological a...