Proliferative kidney disease (PKD) is an emerging disease threatening wild salmonid populations. In temperature-controlled aquaria, PKD can cause mortality rates of up to 85% in rainbow trout. So far, no data about PKD-related mortality in wild brown trout Salmo trutta fario are available. The aim of this study was to investigate mortality rates and pathology in brown trout kept in a cage withi...

Transmembrane lactate movements are mediated by monocarboxylate transporters (MCTs), but these proteins have never been characterized in rainbow trout. Our goals were to clone potential trout MCTs, determine tissue distribution, and quantify the effects of exhausting exercise on MCT expression. Such information could prove important to understand the mechanisms underlying the classic “lactate r...

All of our previous work, and that of other investigators, shows that the trout heart only partially recovers following brief exposure to severe hypoxia or anoxia (i.e. it is hypoxia-sensitive). However, in preliminary studies, we found evidence to suggest that rainbow trout reared at a farm in Oregon (USA) have a significant degree of inherent myocardial hypoxia tolerance. To evaluate whether ...

Transmembrane lactate movements are mediated by monocarboxylate transporters (MCTs), but these proteins have never been characterized in rainbow trout. Our goals were to clone potential trout MCTs, determine tissue distribution, and quantify the effects of exhausting exercise on MCT expression. Such information could prove important to understand the mechanisms underlying the classic "lactate r...

Introduction and spread of the parasite Myxobolus cerebralis, the causative agent of whirling disease, has contributed to the collapse of wild trout populations throughout the intermountain west. Of concern is the risk the disease may have on conservation and recovery of native cutthroat trout. We employed a Bayesian belief network to assess probability of whirling disease in Colorado River and...

NUCLEAR DNA CONTENT AND GENOME SIZE OF TROUT AND HUMAN In their recent paper, Thomas et al. (1) discussed design, resolution, sensitivity, and reproducibility of the National Aeronautics and Space Administration/American Cancer Society flow cytometer. The results of their study demonstrated high stability and sensitivity of the instrument, which is suitable for detection of near-diploid tumor c...

This paper reviews historical differences among native lake trout (Salvelinus namaycush) populations, genetic comparisons of populations, heritability of physiological traits, performance of strains after stocking, and the role of genetics in management. Differences among lake trout were historically recognized by aborignal people, Jesuit missionaries, and French voyageurs, and later by natural...

—Stocking is commonly practiced to create, sustain, or enhance fisheries, but comprehensive evaluations of stocking success are rare. I assessed the relative abundance, survival, and growth of three strains of brown trout Salmo trutta that were stocked as sympatric populations into six rivers to evaluate relative stocking performance from 1997 to 2000. Stocked brown trout from wild broodstock w...

Rainbow trout ( Oncorhynchus rnykiss ) retain the majority of lactate produced during exhaustive exercise within the white muscle. Previous studies have suggested that this retention is partiaiiy via a reuptake of released lactate. The purpose of this work was to study lactate uptake using trout white muscle sarcolemmai vesicles. Through modifications to the original mammalian giant vesicle tec...

∗This work was financially supported by the Austrian Science Foundation (FWF) grant SFB F013 and the Christian Doppler Research Association (CDG). S. Gerhold gratefully acknowledges a fruitful collaboration and continued support by the Austrian Federal Financing Agency and Bank Austria through CDG. M. Kauers was supported by the Austrian Science Foundation FWF under SFB F013 grant number F1305 ...