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Haemolymph from larvae of Simulium venustum Say collected in Canada was tested for the presence of 49 amino acids and other ninhydrin-positive compounds. The concentrations found are listed and discussed. In connection with the possible control of S. venustum by parasitic Mermithids, it is pointed o...
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Several salt compounds were tested in vitro as inhibitors of Erwinia carotovora subsp. atroseptica (van Hall) Dye (Eca) and Erwinia carotovora subsp. carotovora (Jones) Bergey, Harrison, Breed, Hammer & Huntoon (Ecc), causal agents of bacterial soft rot of potato. All compounds were mixed with p...
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Osmotic minipumps are often used as an alternative to repetitive injections for prolonged drug delivery in adult rats. The appropriateness of using this technology for sustained drug delivery in newborn rats, however, has not been validated. Our objective was to determine if implantation of osmotic ...
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The aim of this study was to examine the effects of various biological factors such as body mass, trophic level, climate and geography on census area in terrestrial mammals. The effects of census area on the population density-body mass relationship were also examined. The geographic areas covered i...
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This study was designed to examine the ability of pertussis toxin to block various responses due to (-)-baclofen in cultured cerebellar granule neurons of the rat. Treatment with pertussis toxin for 3 h markedly reduced the ability of (-)-baclofen to stimulate GTPase in membranes, and its ability to...
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The cause of size differences among developing fish is often not clear. We examined variability in egg size and in incubation time to determine whether either influenced hatching size or initial rates of growth in Japanese Medaka. We also tested the prediction that larger females should produce heav...
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A letter to the editor is presented discussing polychaete composition in blue mussel fouling communities in relation to mussel stocking density and seasonality of mussel deployment and sampling.
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• Dispersal may be favoured at geographic range edges by unstable population
and metapopulation dynamics. However, dispersal may also evolve in response to
geographic variation in other life-history traits, especially the mating system. Here,
increased dispersal at range margins was te...
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Greenhouse trials were conducted to evaluate the effect of treating adult and egg stages of Choristoneura fumiferana with Insegar, a water-based commercial formulation of the juvenile hormone analogue fenoxycarb, or with water (controls) at droplet sizes and densities comparable to those achieved th...
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The hydraulic habitat of 12 sites in a small salmon stream in central New Brunswick was investigated between 1992 and 1995 to determine patterns of habitat (substrate) stability between and within reaches. Stability was evaluated by measuring particle size distribution in replicated erosional and de...