Weak influences of physical and chemical factors on the morphogenetic process (in Invertebrates)

Analysis is presented of long-term data obtained in investigation of the effects of weak influences on morphogenetic processes in invertebrates (regeneration of planarians Dugesia (Girardia) tigrina and postembryonic development of insects, the grain beetle Tenebrio molitor). Weak physical and chemical factors were used: electromagnetic radiation, constant, alternating, and combined magnetic fields, and low concentrations of solutions of neuropeptides. It is shown that these influences are characterized by instability and opposite directions (from stimulatory to inhibitory). The dependence of the effects on external factors and the course of internal processes was established.