Chemical control of arthropods Flashcards
Give an example of a repellent
Citronella
DEET, dipropyl isocinchomeronate and piperonyl butoxide are examples of what kind of chemical control?
Repellents
How do growth regulators work?
They are analogues of insect growth hormones and interfere with growth/moult/egg laying of the parasite.
THEY DO NOT KILL IMMEDIATELY
What is the mechanism of action of Chlorinated hydrocarbons?
Interfere with ion transport across axones, producing a hyperexcitability
What drug classes work by inhibiting acetylcholine esterase?
Carbamates and organophosphates
Which drug class works by acting on sodium channels?
Pyrethroids
What drug class is toxic to fish?
Pyrethroids
What drug class acts on glutamate-gated chloride channels?
Macrocytic lactones
What is the mechanism of action of formamidines?
Inhibit mono-amine oxidase
What is a complication of carbamates and organophosophates for vertebrates? How would you treat it?
Toxicity: parasympathomimetic stimilation
Treat with atropine
What drug class persists for 4-6 weeks?
Carbamates
Which drug class is banned for use in food animals?
Chlorinated hydrocarbons
What organophosphates are used for flea treatment?
Malathion, Cythioate and Dichlorvos
What organophosphates is used for sheep blowfly?
Diazinon
What organophosphate is used for horse bots?
Tichlorphon
Which class of drugs blocks different receptors including nicotinic and GABA receptors? Can you give an example of each respectively?
Neo-nicotinoids
Nicotinic receptor - Imidacloprid
GABA receptor - Fipronil
To which drug class do Avermectins belong?
Macrocytic lactones
Which growth regulators are used for the control of fleas?
Methoprene, Lufenuron, pyriproxyfen
What two drug classes are used in the control of cattle tick?
Formamidines - Amitraz
Growth regulators - Fluazuron
What drug class is used in the control of demodectic mange?
Formamidines - Amitraz
How long do organophosphates persist in the environment?
24 hours to 12 weeks
Which drug class is developed from streptomyces spp?
Macrocytic Lactones
Which drug class can be administered parenterally?
Macrocytic lactones
Which drug class persists for really long times in the environment?
Chlorinated hydrocarbons