National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Hormonal regulation of behavioral manipulation in insects caused by parasites
Janů, Hana ; Jůzová, Kateřina (advisor) ; Žďárek, Jan (referee)
Number of scientific publications describing how parasites alter their host's behaviour providing them successful reproduction or transmission to other hosts has significantly increased during the last few decades. In recent years, more and more researchers are not only describing changes in the host organisms, but also trying to figure out mechanisms beyond these parasitic manipulations. Parasites can manipulate the host through neural and endocrine system using neuromodulators, immunomodulators, neurotransmitters and hormones. Either increase or decrease of hormone levels may cause changes of the infected hosts development, metabolism, reproduction and behaviour. Hosts, whose behaviour is altered via hormonal pathways are mostly developmentally arrested and their feeding and locomotion is terminated. Observed behavioral changes like hole digging or termination of participation in group work in insects demonstrably increase parazite's fitness. This thesis is a summary of behavioral manipulations of insects caused by changes in hormone levels.

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