Uticaj različitih temperatura na aktivnost corpora allata i dorzolateralnih protocerebralnih neurosekretnih neurona kod larvi Morimus funereus
Effects of thermal stress on activity of corpora allata and dorsolateral neurosecretory neurons in Morimus funereus larvae
Janković Tomanić, Milena
Prolić, Zlatko M.
Perić Mataruga, Vesna
Article (Published version)
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The effects of different temperatures (23°C and 8°C) on activity of corpora allata (CA) and dorsolateral (L1, L2) protocerebral neurosecretory neurons were investigated in Morimus funereus Mulsant (1863) larvae collected from a natural population during March. Activity of CA was revealed by monitoring of CA volume and cell number. Increase of CA volume after two day exposure to both temperatures was shown to be the result of increase in cell number. Activity of CA was higher at 23°C than 8°C. Activity of L1 and L2 neurosecretory neurons was inhibited at both temperatures. Neurosecretory neurons were more sensitive to temperature of 23°C than 8°C. It can be supposed that dorsolateral neurosecretory neurons synthesize neurohormones that affect CA activity, depending on environmental temperature.
Keywords:temperature stress; corpora allata; neurosecretory neurons; Morimus funereus; Cerambycidae
Source:Archives of Biological Sciences, 2005, 57, 2, 83-92