Project Details

Disease Management in Hawaiian Aquaculture, Year 02

July 1, 1993

LocationFundingInstitutionPrincipal Investigator(s)
Hawaii $68,116 University of Hawaii at Manoa and Hawaii Aquaculture Development Program B. LeaMaster and J. Brock
  1. Field test a preventative strategy to mitigate losses of growout cultured Chinese catfish (Clarias fuscus) in Hawaii due to Aeromonas hydrophilia or Edwardsiella tarda septicemia.
  2. Screen juvenile and adult cultured Chinese catfish and tilapia (Oreochromis mossambicus) for potential pathogenic fish viruses.
  3. Assess the infectivity of IHHNV in feces after passage through the digestive tract of a species of waterbird.
  4. Provide diagnostic and health management support to the CTSA –funded Ornamental Aquaculture Technology Transfer project.
  5. Implement management practices and standard disease treatment strategies to improve fish survivability and reduce the abundance of pathogenic parasites in imported groups of freshwater tropical aquarium fish.
  6. Document the principal ectoparasites and assess for the effects of these agents on cultured tilapia and mullet in the Heeia Fishpond, Kaneohe, Hawaii.
  7. Assess by gross and microscopic examination samples of Gracilaria spp. cultured at various locations in Hawaii for the presence of Gracilaria Gall Syndrome (GGS) and the GGS agent.
  8. Ascertain the relative susceptibility of the different types (red, jade, etc.) of commercially grown and wild Gracilaria spp. to infection by the GGS agent by cohabitation with GGS positive plants.
  9. Demonstrate (or not) the transmission of GGS to an unifected, highly susceptible Gracilaria sp. by transfer of water from GGS positive to GGS negative aquaria, and exposure of uninfected groups of seaweed to aerosols from GGS positive aquaria.
  10. Evaluate other aquatic plant species on the farms as potential reservoir hosts for the GGS agent.
  11. Carry out preliminary screening tests to identify a potential chemical control options for GGS.