[The morphogenetic function of neuropeptides]

Morphogenetic effects of neuropeptides on the regeneration of planarians and the development of grain beetle larvae, were investigated. Macromorphological parameters and the proportions of planarian body were estimated using the technique of vital computer morphometry; the weight and moulting intensity changes were measured in larvae. Vasopressin, dalargin, somatostatin and hydra activator (morphogen) activated, sleep-inducing peptide exerted no effect, and LH-RH inhibited the planarian regeneration. The hydra morphogen and LH-RH stimulated normal development of grain beetle larvae. The dose- and structure-dependent action of neuropeptides on the morphogenesis were similar to those related to other physiological functions.