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2008
Background: Bast fibres from the phloem tissues of flax are scientifically interesting and economically useful due in part to a dynamic system of secondary cell wall deposition. To better understand the molecular mechanisms underlying the process of cell wall development in flax, we extracted...
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Age determination of a long-lived coregonid from the Canadian North: comparison of otoliths, fin rays and scales in inconnu (Stenodus leucichthys)
Download2004
Gendron, M., Tonn, W.M., Howland, K.L., Tallman, R.F.
We examined otoliths, pelvic fin rays and scales of inconnu to determine precision of age estimates within and between readers, and to compare relative accuracy of estimates from different structures. Our main objective was to determine if readability and estimates from fin rays and scales,...
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1993
Density-dependent constraints on parasite growth, survival or reproduction are thought to be important in preventing the unchecked increase in parasite numbers within individual hosts or host populations. While it is important to know where, and with what severity, density dependence is acting...
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Diet and Growth of Northern Pike in the Absence of Prey Fishes: Initial Consequences for Persisting in Disturbance-Prone Lakes.
Download2006
Venturelli, P. A., Tonn, W. M.
The northern pike Esox lucius is a renowned piscivore, but will prey opportunistically on invertebrates (e.g., in small lakes of boreal Alberta, where winterkill can unexpectedly reduce or eliminate prey fishes). We emulated such a disturbance by stocking a fishless lake with northern pike and...
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Drosophila ATM and ATR have distinct activities in the regulation of meiotic DNA damage and repair
Download2011
Tiong, S., McKim, K.S., Campbell, S.D., White-Brown, S.K., Paul, A., Pedersen, M., Joyce, E.F.
Ataxia telangiectasia–mutated (ATM) and ataxia telangiectasia–related (ATR) kinases are conserved regulators of cellular responses to double strand breaks (DSBs). During meiosis, however, the functions of these kinases in DSB repair and the deoxyribonucleic acid (DNA) damage checkpoint are...
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Endogenous melanocortin antagonist in fish: Structure, brain mapping and regulation by fasting of the goldfish agouti-related protein gene
Download2003
Cerdá-Reverter, J.M., Peter, R.E.
Agouti-related protein (AGRP) is a naturally occurring antagonist of melanocortin. In mammals, central AGRP expression is restricted to the arcuate nucleus in which it plays a key role in the control of energy balance by antagonizing melanocortin effects at melanocortin 4 receptors. In goldfish,...
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Generation of a restriction minus enteropathogenic Escherichia coli E2348/69 strain that is efficiently transformed with large, low copy plasmids
Download2008
Raivio, T.L., Price, N.L., Ward, J.D., Hobson, N.
Background Many microbes possess restriction-modification systems that protect them from parasitic DNA molecules. Unfortunately, the presence of a restriction-modification system in a given microbe also hampers genetic analysis. Although plasmids can be successfully conjugated into the...
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Large-scale proteome profile of the zebrafish (Danio rerio) gill for physiological and biomarker discovery studies
Download2009
De Souza, A. G., Goss, G. G., MacCormack, T. J., Wang, N., Li, L.
Abstract: Zebrafish are an important model in vertebrate genetics, developmental biology, physiology, and toxicology. In this study, we established the first large-scale proteome profile of a teleost fish tissue using a shotgun method based on two-dimensional liquid chromatography-electrospray...
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Manipulation of host food availability and use of multiple exposures to assess the crowding effect on Hymenolepis diminuta in Tribolium confusum
Download2008
Walsh, J.G., Wong, Y.C., Shostak, A.W.
We studied the ‘crowding effect’ in Tribolium confusum infected with Hymenolepis diminuta. Manipulations included age and number of parasites, and diet, sex, age and number of exposures of hosts. Volume per parasite was unaffected until an intensity of at least 5–10 parasites per host, then...