The response of medial neurosecretory neurons to temperature stress in Morimus funereus larvae

The central nervous system and neurohormones are an important component of the process of adaptation to a changing environment (Ivan o vi c and Jank ovic-Hladni , 1991). Activity of neurosecretory neurons determines the content of ncurohormones which control the dynamics of metabolism and metamorphosis (l v an o v i c and Ja n kov ic i Hl a d n i , 1991). Neuropeptides synthesized in the medial part of the insect protocerebrum include tropic factors regulating the synthesis of ecdysteroids (prothoracicotropic factors PTTH, K a w aka m i et al., 1990) and juvenile hormones (allatotropic factors -ATTH, Bogus and Scheller, 1994), as well as a number ofneuropeptides modifying the rate and direction of metabolism (Raabe, 1982).