1. The effects of diet composition and insulin treatment on blood glucose level, blood amino acid concentrations, the activities of two hepatic gluconeogenic enzymes (fructose diphosphatase, EC 3.1 .3.11; phosphoenolpyruvate carboxykinase, EC 4 .1 . 1 .32) and of two hepatic glycolytic enzymes (hexokinase, EC 2 .7 .1 . 1 ; pyruvate kinase, EC 2 . 7 . 1 .40) were examined in rainbow trout (Sulmo...

Proliferative kidney disease (PKD), caused by the myxozoan parasite Tetracapsuloides bryosalmonae, is well documented as a seasonal disease of rainbow trout Oncorhynchus mykiss. Water temperatures influence the course of the infection both within the fish and the invertebrate host, the recovery of fish from the disease being accelerated with decreasing water temperatures. During this study, gro...

Outputs from a physiologically-based toxicokinetic (PBTK) model for fish were visualized by mapping time-series data for specific tissues onto a three-dimensional representation of a rainbow trout. The trout representation was generated in stepwise fashion: 1) cross-sectional images were obtained from an anesthetized fish using a magnetic resonance imaging (MRI) system, 2) images were processed...

As part of a routine disease surveillance exercise, a culture of the Gram negative bacterial pathogen Yersinia ruckeri was obtained from one of 150 largely asymptomatic rainbow trout from a farm on the Isle of Man, an island off the North West coast of Great Britain. This is the first reported isolation of Y. ruckeri from the Isle of Man. The isolate was phenotypically and serologically indisti...

Outputs from a physiologically based toxicokinetic (PB-TK) model for fish were visualized by mapping time-series data for specific tissues onto a three-dimensional representation of a rainbow trout. The trout representation was generated in stepwise fashion: 1) cross-section images were obtained from an anesthetized fish using a magnetic resonance imaging system, 2) images were processed to cla...

Background: Much has been written about introduced rainbow trout (Oncorhynchus mykiss) interbreeding and outcompeting cutthroat trout (Oncorhynchus clarkii). However, the specific mechanisms by which rainbow trout and their hybrids outcompete cutthroat trout have not been thoroughly explored, and the published data is limited to lotic ecosystems. Materials and Methods: Samples of rainbow trout ...

Advances in genetic technology over the past two decades have provided a variety of molecular genetic marker systems that are enabling new insights into the historical and contemporary processes that influence fish biology. Genetic research on brook trout (Salvelinus fontinalis) and lake trout (Salvelinus namaycush) in Algonquin Park is allowing us to examine issues ranging from the phylogeogra...

this study describes the effects of different stocking densities on texture/colour characteristics, protein content /amino acid and lipid content/fatty acid composition of rainbow trout fillet.stocking density was selected 5 (group a), 15 (group b), 25 (group c) kg fish m−3.tukey’s multiple comparison test showed insignificant differences between measured size/weight measurement and condition fac...

the pollutants due to effect on the immune system of fish increase fish sensitivity to pathogens. diazinon is one of the most used organophosphates pesticide in many agricultural areas. this study aimed to evaluate the effect of diazinon on the immune system of rainbow trout ( oncorhynchus mykiss ) and application of milk thistle plant, vitis vinifera extract to reduce the adverse effects of th...