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Hormonálně řízená obrana proti hmyzím patogenům
 BODLÁKOVÁ, Karolina
The aim of this bachelor thesis was to characterize the effect of one insect pathogen (entomopathogenic nematode Steinernema carpocapsae) and one venom (from the honey bee Apis mellifera) on digestive enzymes (amylases, proteases, lipases), and on adipokinetic hormone production in the brain of the cockroach Periplaneta americana . The experiments were done with the adult male and female cockroaches from a colony kept in the Insectary in the Institute of Entomology BC CAS. The pathogen/venom were applied into the cockroach body by injection 24 hours before the processing. After that the activity of digestive enzymes in the midgut, and AKH level in the brain were monitored. The results showed that the nematode has no effect on enzymes, and on AKH level as well. On the other hand, the bee venom partially increased the activity of digestive enzymes, but the role of AKH in this process in not completely clear.
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