Interacting populations : hosts and pathogens, prey and predators
MetadataShow full item record
The interactions between populations can be positive, neutral or negative. Predation and parasitism are both relationships where one species benefits from the interaction at the expense of the other. Predators kill their prey instantly and use it only for food, whereas parasites use their hosts both as their habitat and their food. I am particularly interested in microbial parasites (including bacteria, fungi, viri, and some protozoans) since they cause many infectious diseases. This thesis considers two different points in the population-interaction spectrum and focuses on modeling host-pathogen and predator-prey interactions. The first part focuses on epidemiology, i. e., the dynamics of infectious diseases, and the estimation of parameters using the epidemiological data from two different diseases, phocine distemper virus that affects harbor seals in Europe, and the outbreak of HIV/AIDS in Cuba. The second part analyzes the stability of the predator-prey populations that are spatially organized into discrete units or patches. Patches are connected by dispersing individuals that may, or may not differ in the duration of their trip. This travel time is incorporated via a dispersal delay in the interpatch migration term, and has a stabilizing effect on predator-prey dynamics.
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June 2007
Showing items related by title, author, creator and subject.
Banning, Erin C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-06)Predatory bacteria are ubiquitous in aquatic environments and may be important players in the ecology and biogeochemistry of microbial communities. Three novel strains belonging to two genera of marine flavobacteria, ...
Roles for Drosophila melanogaster myosin IB in maintenance of enterocyte brush-border structure and resistance to the bacterial pathogen Pseudomonas entomophila Hegan, Peter S.; Mermall, Valerie; Tilney, Lewis G.; Mooseker, Mark S. (American Society for Cell Biology, 2007-09-12)Drosophila myosin IB (Myo1B) is one of two class I myosins in the Drosophila genome. In the larval and adult midgut enterocyte, Myo1B is present within the microvillus (MV) of the apical brush border (BB) where it forms ...
The coastal environment and human health : microbial indicators, pathogens, sentinels and reservoirs Stewart, Jill R.; Gast, Rebecca J.; Fujioka, Roger S.; Solo-Gabriele, Helena M.; Meschke, J. Scott; Amaral-Zettler, Linda A.; del Castillo, Erika; Polz, Martin F.; Collier, Tracy K.; Strom, Mark S.; Sinigalliano, Christopher D.; Moeller, Peter D. R.; Holland, A. Fredrick (BioMed Central, 2008-11-07)Innovative research relating oceans and human health is advancing our understanding of disease-causing organisms in coastal ecosystems. Novel techniques are elucidating the loading, transport and fate of pathogens in coastal ...