Patent ID: 7836852

Claim:
A method of manipulating a spawning cycle of perch across multiple generations, the method comprising: identifying a first out-of-cycle spawning period for perch; selecting a geographic strain of perch having a natural spawning period different from the first out-of-cycle spawning period; developing a first generation broodstock from the geographic strain, wherein the broodstock's natural spawning period has been shifted to the first out-of-cycle spawning period using at least one of temperature and photoperiod manipulation; dividing the first generation broodstock into a first group and a second group; identifying a second out-of-cycle spawning period different from the natural spawning period and the first out-of-cycle spawning period; developing a second generation broodstock from the first group within the first generation broodstock, wherein the second generation broodstock's spawning period has been shifted from the first out-of-cycle spawning period to the second out-of-cycle spawning period using at least one of temperature and photoperiod manipulation; and developing at least one additional generation of broodstock from the second group within the first generation broodstock, wherein the additional generation of broodstock spawns during the first out-of-cycle spawning period.