Patent attributes
A method of manipulating a spawning cycle of perch across multiple generations that includes identifying a desired out-of-cycle spawning period for perch, selecting a geographic strain of perch having a natural spawning period in proximity to the desired out-of-cycle spawning period, developing a first generation broodstock from the geographic strain, where the broodstock's natural spawning period has been shifted to the desired spawning period using at least one of temperature and photoperiod manipulation, identifying a second desired out-of-cycle spawning period, developing a second generation broodstock from the first generation broodstock, where the second generation broodstock's spawning period has been shifted from the desired out-of-cycle spawning period to the second desired out-of-cycle spawning period using at least one of temperature and photoperiod manipulation. Exemplary strains include strains from the East Coast of the United States, including strains from the Chesapeake Bay, the Sassafras River, and the Choptank River.
