The aim of this study was to gain more information about the
interactions between DNA and the histone octamer during the
process of transcription. This work used a pUC8 plasmid derivative
that contained the core promoter region of the RNA polymerase I of
Acanthamoeba castellanii, placed upstream of four repeats...
This study examines the impact on Pacific Northwest
seafood exporters of the European Union Directive on packaging
and packaging waste management.
The study of the official text of the proposed Directive
was the starting point of our analysis. This allowed us to
give a presentation of the EU Directive and...
Although European fish consumption is increasingly dependant on aquaculture products given the
decrease of worldwide fisheries landings, the image of farmed fish is more and more controversial. This
paper aims at assessing the importance of farmed fish in the European seafood consumption, as well in
terms of image and perception...
Dans le cadre de la coopération Franco-Brésilienne, l'IFREMER, l'Etat de Bahia et la société Littoral Sul Maricultura ont développé une nouvelle technique d'élevage de crevettes pénéides (Penaeus vannamei) en utilisant des cages flottantes. Après trois années de mise au point, cette technique s'est avérée intéressante sur plusieurs aspects. La productivité...
The myxozoan parasite, Ceratomyxa shasta, is the most significant pathogen of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Klamath River, CA, USA. This parasite requires two hosts - a freshwater polychaete (Manayunkia speciosa) and a salmonid - to complete its life cycle. The complex life cycle and large geographic area...
In this dissertation, new theory and its applications are developed to predict three properties of complex ecological communities: stability, equilibrium response, and non-equilibrium dynamics. First, a graph-theoretic analysis identifies the interconnections in a complex ecosystem that promote or diminish stability (Chapter 2). The hierarchy of interactions that influences stability and...
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PhilippeA. Rossignol Hiram W. Li
In this dissertation, new theory and its
This research examines two of parameters of vectorial capacity for mosquitoes associated with catch basins in Corvallis, Oregon. The parameters of interest were determining 1) abundance of the mosquito species associated with the catch basins and 2) feeding patterns of local mosquito species. Three species of mosquitoes were collected from...
Knowledge of how individual organisms behave in their environment can provide a greater understanding of population dynamics. In a predator-prey system, the choices made by predators when foraging for prey are important aspects of behavior. Particularly in the case of a stage-structured prey population, how the predator selects prey stages...
We identify all translation covers among triangular billiards surfaces. Our main tools are the J-invariant of Kenyon and Smillie and a property of triangular billiards surfaces, which we call fingerprint type, that is invariant under balanced translation covers.