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Cellular signalling pathways involved in thermoprotection of neural ciruit function in the locust.
(2009-08-27)
Environmental temperature is arguably one of the most important abiotic physical factors
affecting insect behaviour. Temperature affects virtually all physiological processes
including those that regulate nervous system ...
Controls on Seasonal Nitrogen Cycling in Canadian Low Arctic Tundra Ecosystems
(2009-09-27)
Soil nitrogen availability to plants is a fundamental control on the structure and functioning of arctic tundra ecosystems. Despite recent evidence that biogeochemical and microbial dynamics during the non-growing season ...
Integrating theory and experimentation in the study of malaria
(2009-08-25)
Malaria poses a serious threat to much of the developing world and an enormous effort is under way to design vaccines and other novel interventions. Nevertheless, we understand very little about the ecology and evolution ...
Stress responses in an outbred, wild-derived hamster, Phodopus campbelli: Individuality in the cortisol response to acute restraint stress and the absence of strong association with behavioural responses to acute restraint
(2009-02-11)
Glucocorticoid reactivity is often used as a biomarker of emotional stress status in animals and man. Likewise, behavioural responses of individuals to standardized stresses are also widely used to assess the magnitude of ...
Growth and Myosin Heavy Chain Expression in the White Muscle of Juvenile Walleye (Sander vitreus)
(2009-02-19)
Walleye are an important recreational and commercial fish species that are distributed over an expansive geographic range across North America. However, its palatable white flesh and appeal to anglers have lead to declines ...
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 ...
The mechanism of retene toxicity in the early life stages of fish
(2009-01-15)
Alkylphenanthrenes such as retene (7-isopropyl-1-methylphenanthrene) are aquatic contaminants commonly found in anthropogenically-, industrially-, and petroleum-contaminated environments, and have been implicated in crude ...
Assessment of Long-Term Changes in Water Quality from Halifax Region Lakes (Nova Scotia, Canada) Using Paleolimnological Techniques
(2009-09-10)
The current study developed a paleolimnological approach to assess changes in diatom assemblages (class Bacillariophyceae) from present-day lake sediments in comparison to those deposited before significant human impact ...
The Effects of Thermal Habitat and Macroinvertebrate Predation on the Crustacean Zooplankton Community of a Small Boreal Shield Lake
(2009-03-31)
Climate change will affect all freshwater ecosystems via both direct physiological and indirect, biologically-mediated effects. Small lakes (< 10 ha) numerically dominate the Boreal Shield and represent an important habitat ...
Shrub expansion in the low Arctic: The influence of snow and vegetation feedbacks on nitrogen cycling
(2009-09-19)
Climate change has coincided with expansion of deciduous shrub species in the Arctic. Increased deciduous vegetation in the tundra could have profound implications on regional climate, carbon balance, and biogeochemical ...