engleski

Prospective utilization of insect stress hormones in pest control

Alternative control of insect pests plays an important role in modern pest management and helps to reduce the amount of classical pesticides deployed. Several studies showed that insect endocrine system, especially anti- stress neuropeptides, could be used as a potential target for pest control. Stress energy metabolism in insects is primarily operated by adipokinetic (neuro)hormones (AKHs). Effects of insecticides on adipokinetic characteristics: 1. Tested insecticides – neurotoxins: permethrin, endosulfan, pirimiphos-methyl. 2. Monitored characteristics: effects on AKH level, oxidative stress markers, mortality, total metabolism. 3. Model insect species: firebug Pyrrhocoris apterus and red flour beetle Tribolium castaneum (AKH-normal, AKH-def-RNAi). Summary and conclusions: 1. AKHs play a role in stress elicited by insecticides. 2. AKHs modulate anti-oxidative stress response. 3. AKHs increase mortality of insects treated with insecticides. 4. Elevation of metabolism probably accompanied with faster turnover of toxins, might be responsible for higher mortality.

adipokinetic hormone ; firebug ; flour beetle ; pesticide ; pest control

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