769189
Description
Flashcards by Chloe Zaydner, updated more than 1 year ago
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Created by Chloe Zaydner
over 11 years ago
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| Question | Answer |
| What is the generic fly life-cycle? | Egg -> Larvae -> Pupae -> adult |
| Why did the attempted eradication of malaria not work? | DDT resistance (potent insecticide) and poor surveillance. |
| Which agent transmits malaria? | Female anopheles mosquito |
| What is the difference between eradication and control? | Eradication is to eliminate the disease so it will not return, whereas control is to reduce the disease/pest to an acceptable level. |
| Which body system do most ectoparasitic drugs target? | Neurotoxin. |
| Which four aspects of the CNS do ectoparasitic drugs target? | GABA inhibitor, Na+ channel blocker, Cl- channel blocker and Choline esterase inhibitor. |
| Name some insect repellants? | Pyrethrin, DEET and citronella |
| Name a Dessicant? | Sodium Polyborate |
| Name a insectide with a synergist effect? | Piperonyl Butoxide. |
| How does Piperonyl Butoxide work? | Inhibits insect detox pathway, increasing available concentration of insecticide especially when used with pyrethrin. |
| Give an example of an insecticide dip used especially in cats? | Lime-sulphur. Good for mites. |
| What is a deltamethrin collar good for? | Sandflies, mozzies and ticks. |
| What is a imidacloprid/flumethrin collar good for? | Fleas and ticks |
| How does nitenpyram differ from a spinosad? | Nitenpyram is very rapid but very short acting wheras spinosad can last for up to a month. |
| Why do you need to give multiple environmental flea treatment? | Because the pupae are unaffected by any drug so you wont have got whole population with first treatment. |
| What groups of ectoparasitic control are found in FrontlineCombo | Juvenile growth hormone analogue in combo with an adulticide. |
| Why is it important if a louse is sucking or chewing? | Because a systemic drug would be more effective for a sucking louse than a chewing one. |
| What is significant about the lifecycle of a ked. | Whole life cycle on host. |
| What is a ked? | Wingless, bloodfeeding fly. |
| What are midges and mosquitos vectors of? | Bluetongue and schmallenburg. |
| What are sandflies a vector of? | Leishmaniosis |
| What is a way to repel sandflies? | Use a deltamethrin collar. |
| What is the scientific name for a hard tick? | Ixodid |
| What is the scientific name for a soft tick? | Argasid |
| Which tick is nidiculous? | Argasid |
| What is significant about Ixodes ricinus ? | It is ENDEMIC in UK and can trasmit Lyme disease, Louping Ill, Erhlicia and Babesia |
| What is Borrelia burgdoferi ? | Lyme disease |
| What disease does Dermacentor reticulatus transmit? | Babesia canis |
| What diseases do Rhipicephalus sanguineus trasmit? | Babesia canis and Erhlicia |
| What is the most common Tick-borne disease in UK? | Borreliosis |
| Describe the morphology of the Borrelosis agent? | Spirochete |
| What animals does Louping Ill virus effect? | Sheep and Grouse in upland areas. |
| Is Louping Ill notifiable? | Nope - control is voluntary |
| What is the pathogenesis of Babesiosis? | Intraerythrocytic protozoan parasite which results in destruction of RBCs and causes anaemia. |
| What is the most economically important arthropod-borne disease of cattle worldwide? | Babesiosis caused by Babesia bovis |
| What strain of Babesia affects cattle in UK? | Babesia divergens aka redwater fever. |
| What is the window between tick attachment and pathogen transfer? | About 24hours |
| What is a mite life-cycle? | Egg -> 6 legged larvae -> 8 legged nymph (1-3 stages) -> adult |
| What is the main host of sarcoptic mange? | Dogs (fox reservoir - can be zoonotic) |
| What is the best treatment for sarcoptic mange? What is a downside? | Amitraz bath but is a bit of a faff (weekly needed) |
| How does the age of the animal affect treatment for demodex? | IN a young animal this will resolve with age however in an older animal dz is associated with immuno-incompetence therefore treat and investigate immunosuppression. |
| What is the agent for sheep scab? | Psoroptes ovis |
| What is the best way to treat sheep scab? | Dip (OP) + Injection (Moxidectin) |
| How does moxidectin differ in terms of withdrawal period cf doramectin and ivermectin? | Withdrawal period is much longer. |
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