New and highly refined physiological techniques have largely replaced the descriptive methods of classical cytology originally used in the investigation of host-parasite relations (Shaw and Samborski, 1956; Samborski and ...

Many mammals are social. The most basic social behaviour is when the actions of one conspecific are directed toward another, what we call the ‘dyadic interaction’. Both intrinsic and extrinsic factors may affect an ...

Ribosomal proteins (RPs), synthesized in the cytoplasm, need to be transported from the cytoplasm to the nucleolus (a nuclear compartment), where a single molecule of each RP assembles with rRNAs to form the large and small ...

Protoplasts derived from soybean SB-I suspension cell cultures were incubated in buffered osmoticum containing cationized ferritin (CF) or native ferritin (NF) to demonstrate the process of endocytosis in plant ...

The salinity at the waste management areas at potash mines is extreme. Saturated brine seeps from the tailings pile and contaminates the surrounding land killing vegetation and affecting soil structure. Conventional ...

The Paleocene Ravenscrag Formation of southwestern Saskatchewan, Canada, is a lignite-bearing clay, silt, and sand unit which, in places, bears abundant, well preserved plant fossils. These sediments conformably ...

High temperature stress (HTS) adversely affects reproduction in most plant species studied to date. HTS during flowering may result in an almost total inhibition of seed production in crop plants. Increasing our knowledge ...

The first thorough investigation of the status of beaver populations in Wood Buffalo National Park was reported by Soper (1937). At that time the lowlands of the Peace and Athabasca deltas were largely devoid of beaver, ...

Understanding the ecology and epidemiology of tick-borne diseases requires detailed knowledge of the complex interactions among the tick vector, the microorganisms they carry and the vertebrate hosts used by ticks, as well ...

Spatial variation in density of organisms can lead to challenges in estimation of population size. Associated vital rates responsible for this variation also may vary geographically and in response to local ecological ...