Bacterial Coral Pathogens of the Genus Vibrio

Date
2016-08
Authors
Ushijima, Blake
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Annotator
Journal Title
Journal ISSN
Volume Title
Publisher
[Honolulu] : [University of Hawaii at Manoa], [August 2016]
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
Abstract
Coral reefs play an important role in numerous marine ecosystems, however, their survival is threatened by outbreaks of disease. On their own, reefs have the ability to regenerate after destructive events like natural disasters; however recent threats have pushed coral reefs past the point of recovery and many reefs are now under threat of disappearing forever. Outbreaks of diseases specific to corals have already decimated the reefs of the Florida Keys and the Caribbean. In addition, the baseline levels of disease are increasing, as well as the expansion of disease outbreaks into new regions and the broadening of coral species that are affected. Unfortunately, not all of the characterized diseases have a pathogen positively identified and many of the mechanisms of disease for the known pathogens have yet to be determined. This piece of work describes the isolation, identification, and characterization of three virulent Vibrio strains that infect and cause tissue lysis in Hawaiian corals and species at Palmyra Atoll. First, Vibrio oswensii strain OCN002 causes chronic Montipora white syndrome (cMWS) among the Hawaiian Rice coral (Montipora capitata), a major reef building species, in Kāne‘ohe Bay, Hawai‘i. Second, Vibrio coralliilyticus strain OCN008 causes a comparably faster-spreading disease called acute Montipra white syndrome (aMWS). Third, V. coralliilyticus strain OCN014 is a cause of Acropora white syndrome among the table coral (Acopora cytherea) at Palmyra Atoll. In addition to characterizing infection, common virulence factors between the two V. coralliilyticus were investigated and a direct link between rising global sea surface temperatures and increased virulence of a coral pathogen was established. This work also describes the identification of a novel virulence mechanism utilized by strain OCN008, which may represent the evolution of this pathogenic species in response to the protective properties conferred to coral by the microorganisms normally associated with it.
Description
Ph.D. University of Hawaii at Manoa 2016.
Includes bibliographical references.
Keywords
Citation
Extent
Format
Geographic Location
Time Period
Related To
Theses for the degree of Doctor of Philosophy (University of Hawaii at Manoa). Microbiology
Table of Contents
Rights
Rights Holder
Local Contexts
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.