The mechanism for acute toxicity of lead (Pb) in rainbow trout (Oncorhynchus mykiss) was investigated at Pb concentrations close to the 96 h LC50 of 1.0 mg dissolved Pb l(-1) (0.8-1.4, 95% C.I.) determined in dechlorinated Hamilton city tap water (from Lake Ontario, hardness=140 mg l(-1) CaCO(3)). Tissue Pb accumulation associated with death was highest in the gill, followed by kidney and liver...

Analyses of blood samples in ichthyology are importance for assessment fish health as well responses to environmental stressors. The measurement results may be affected by multiple factors. This study aimed at the influence collection site comparing dual values indices measured obtained both from heart and puncturing caudal vessels same specimens. Our revealed that sampling did not significantl...

The acute toxicity of cadmium, copper, and zinc to white sturgeon (Acipenser transmontanus) and rainbow trout (Oncorhynchus mykiss) were determined for 7 developmental life stages in flow-through water-only exposures. Metal toxicity varied by species and by life stage. Rainbow trout were more sensitive to cadmium than white sturgeon across all life stages, with median effect concentrations (har...

Rainbow trout (Oncorhynchus mykiss) is a fish species with long history of cultivation and bacterial pathogens are limiting the success rate. The aim this study biochemical molecular identification two opportunistic detected in rainbow cultured net cages dam lake located on Kızılırmak river; revealing pathological symptoms them moribund samples; determination their antimicrobial susceptibility ...

Cobalamin uptake and transport in mammals are mediated by three cobalamin-binding proteins: haptocorrin, intrinsic factor, and transcobalamin. The nature of cobalamin-binding proteins in lower vertebrates remains to be elucidated. The aim of this study was to characterize the cobalamin-binding proteins of the rainbow trout (Oncorhynchus mykiss) and to compare their properties with those of the ...

--In the southern Appalachian Mountains, native brook trout Salvelinus fontinalis and introduced rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta are at the southern extremes of their distributions, an often overlooked kind of marginal habitat. At a regional scale composed of the states of Virginia and North Carolina, species were found to be distributed along latitudinal and elev...

The effect of the pyrethroid, bifenthrin, on rainbow trout (Oncorhynchus mykiss) was assessed based on biochemical, haematological and histopathological examination of fish exposed to Talstar 10 EC pesticide preparation (active substance 100 g/l bifenthrin) at a concentration of 14.7 μg/l. There was a significant (P < 0.01) decrease in plasma ammonia, and significant (P < 0.01) increase in gluc...

Broad-scale studies of climate change effects on freshwater species have focused mainly on temperature, ignoring critical drivers such as flow regime and biotic interactions. We use downscaled outputs from general circulation models coupled with a hydrologic model to forecast the effects of altered flows and increased temperatures on four interacting species of trout across the interior western...

In this study the morphology, conventional glycohistochemistry and ultrastructure of adult rainbow trout (Oncorhynchus mykiss) stomach is reported. For purpose, belonging to 10 female trout, weighting ~ 500 ± 20 gr 32 2.50 cm long, were collected processed. Oncorhynchus mykiss has a siphonal stomach, with J letter shape, showing descending portion (cardiac region), an ascendant one (pyloric con...