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Now showing items 11-20 of 76
Measuring the influence of winter conditions on largemouth bass behaviour using both biotelemetry and laboratory studies
(2007-10-03)
Studying the winter ecology of freshwater fishes has been a focus of much past and present research. Because of obvious constraints with studying fish in situ during the winter, few studies have made links between laboratory ...
Apoptosis and Aging in Drosophila
(2008-10-27)
Several genes involved in the regulation of apoptosis can influence longevity. Although observations in several different systems imply that apoptosis and aging are closely linked, the relationship between the two remains ...
Determining the distribution and fate of mercury in sediments of the Cataraqui River at Kingston, Ontario
(2007-11-02)
The Cataraqui River, which drains 930 square km of watershed before emptying into the inner harbour of Kingston, Ontario (pop: 113,000), has a long history of anthropogenic use. More than 40 industries have existed within ...
Inducible gene expression systems for aging studies in Drosophila melanogaster
(2009-01-08)
Two common strategies used to identify specific genes that influence aging in Drosophila melanogaster are overexpression screens and candidate gene approaches. Both of these strategies rely on gene expression systems. A ...
Molecular characterization of age-related genes in Drosophila melanogaster
(2009-02-09)
Aging, characterized by a time-dependent functional decline, eventually results in the death of an organism. Unfortunately, this complex biological phenomenon is poorly understood. In order to dissect the molecular changes ...
Molecular cloning and characterization of the allatostatin receptor in the cockroach Diploptera punctata
(2008-04-24)
Allatostatins (ASTs) are neuropeptides that inhibit the biosynthesis and release of juvenile hormone from the corpora allata (CA) of various insects including the cockroach Diploptera punctata. We hypothesized that a similar ...
An investigation of the relationship between levels of apoptosis during aging and longetivity
(2008-08-14)
In multicellular organisms, apoptosis plays an important role in maintaining cellular homeostasis and removing damaged cells that present a threat to the integrity of the organism. Several lines of evidence suggest that ...
Arsenic biotransformations in terrestrial organisms: A study of the transport and transformation of arsenic in plants, fungi, fur and feathers, using conventional speciation analysis and X-ray absorption spectroscopy
(2007-07-05)
Arsenic taken up by plants and fungi from contaminated soils can subsequently be introduced into food chains. Given the toxic properties of some arsenic compounds, this may be a cause for concern. Much remains to be learned ...
Tissue-specific transcriptional regulation of monocarboxylate transporters (MCTs) during short-term hypoxia in zebrafish (Danio rerio)
(2009-08-26)
Monocarboxylate transporters (MCTs) have been shown to be important in regulating metabolism during hypoxia in mammals. However, the role of MCTs in hypoxic survival in lower vertebrates is currently unclear. The goal ...
Carry-over effects in American redstarts: Implications for sexual selection and behaviour
(2008-09-23)
Migratory birds spend most of the year on the over-wintering grounds or traveling between breeding and wintering areas, but research has focused on the relatively short breeding period. As a consequence, we have only a ...