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Incubation and Water Quality Program

The Incubation and Water Quality Program has focused research mainly on the early life history of Pacific salmon and steelhead trout, with emphasis on factors (i.e. water quality parameters and fish-culture techniques) that influence egg fertilization, embryonic development, larval growth, and survival. Research has encompassed such areas as:

  • Short-term egg and sperm storage
  • Mechanical shock sensitivity of salmonid eggs
  • Measurement of hydrostatic pressure of salmonid eggs, including the influence of low pH
  • The influence of temperature on salmonid egg development
  • The influence of excess total gas pressure (gas supersaturation) on salmonids
  • The influence of minerals on egg and larval development, and
  • Development of mathematical models for fish mortality response to gas supersaturation and suspended sediment.

More recently, research has been conducted to find alternative treatments for therapeutic chemicals that are not approved for food fish. The use of CO2 as an anesthetic has been researched. Also, two types of water disinfection have been tested, namely:

  • Ozone treatment of water, and
  • Iodine treatment of water.

Results from these varied areas of research have been and continue to be forwarded to government and private industry hatchery facilities to help improve egg and larval survival and growth.

Further resources:

  • IncubWin
    A New Windows 95/98/NT Computer Program For Predicting Embryonic Stages In Pacific Salmon And Steelhead Trout.
  • S.I.R.P.
    Salmonid incubation and rearing programs for IBM-compatible computers.

Ted Sweeten
Pacific Biological Station
Tel: 250-756-7286
Fax: 250-756-7053