title: Thermoperiodism in Sea-run Cutthroat Trout ( Salmo clarki clarki).
abstract: Thermal tolerances from square-wave cycled temperature acclimation were compared with those from constant acclimation temperatures. A response to the maximum temperature of the square-wave cycle occurred. The acclimation thermoperiod was varied from one-fourth to twice the 24-hour cycle, and a relative maximum of tolerance resulted for the 24-hour thermoperiod. This suggests physiological adaption to natural 24-hour thermoperiods.
authors.forename: W G
authors.initials: WG
authors.lastname: Heath