Dual system theory of the biological clock: Effects of photoperiod, temperature, and thermoperiod on the determination of diapause☆

Dual system theory shows experimental data consistent with photocycle measurements of dormancy in different thermostats. The growth time of insects and the duration of their photoperiod sensitivity are inversely proportional to the ambient temperature and the S system of the biological clock is thought to be controlled by the rate of temperature. The clock P system is assumed to be much less sensitive to the temperature of the S system. Phase adjustment by photoperiod at all temperatures within the biologically effective range

The combination of photoperiod and thermal cycle strongly influences the determination of dormancy. The level of dormancy depends on whether the low temperature phase (low temperature phase) or the high temperature phase (thermal phase) is the same as the darkness of the photoperiod. Dual system theory provides an explanation of this effect based on the same grounds as above.

According to the two line theory, based on this, the thermal hysteresis period is determined so that dormancy (in continuous darkness) can be interpreted; (1) no photon dynamics; S system temperature sensitivity is P System; (3) phase adjustment of S system by temperature dependent cycle start threshold

Age-brackled Sundial Theory is an evolutionary role as well as a biological clock or program that controls other life cycle functions such as growth and breeding, aging as a biological function controlled by a biological clock or program . Program aging theory or adaptive aging theory (including clock theory) shows that it is due to individual's lifetime limitation for an individual's age. . One species produces descendant species. Programmatic means that the function depends not only on the passage of time (clock) but also on other factors. For example, reproductive programs are usually synchronized with external signals such as the seasons.

The combination of photoperiod and thermal cycle strongly influences the determination of dormancy. The level of dormancy depends on whether the low temperature phase (low temperature phase) or the high temperature phase (thermal phase) is the same as the darkness of the photoperiod. Dual system theory provides an explanation of this effect based on the same grounds as above. According to the two line theory, based on this, the thermal hysteresis period is determined so that dormancy (in continuous darkness) can be interpreted; (1) no photon dynamics; S system temperature sensitivity is P System; (3) phase adjustment of S system by temperature dependent cycle start threshold

Dual system theory of biological clock: influence of light cycle, temperature and thermal cycle on dormancy measurement ☆