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ectoparasites

animal health WK13

TermDefinition
PARASITOLOGY STUDY OF PARASITES
Define parasites one eukaryotic organism living off another (host) to the advantage of the parasite
Ectoparasites live outside, on the host
endoparasites live within or inside the host
Charateristics of ectoparasites hard 'chitinous' outer shell or exoskeleton insect, arachnid
insects.. fleas, flies, lice
arachnids.. ticks, mites
fleas insects, wingless, 6 legs, 3 body sections, approx 2mm in length, laterally compressed body
name for cat flea Ctenocephalides felis
name for dog flea Ctenocephalides canis
name for hedgehog flea Archaeopsylla erinacei
lifecycle of the flea egg->larvae->pupae->adult
signs of flea infestation flea dirt- flea comb, wet paper test, mild pruitus, hypersensitivity of flea saliva (flea allergy dermatitis
fleas as vectors can carry and transmit disease (e.g. myxomatosis
to kill environmental stages of fleas in the environment vacuuming removes 20% of larvae and 32-59% of flea eggs from the carpet, insecticide and insect growth regulator combinations available for household use
lice insect, 6 legs, 3 body sections, wingless, live on the skin surface
different species of lice sucking (pointy head), biting lice (broad head)
name for dog sucking louse linognathus setosus- may cause pruitis, alopecia, anaemia
name for dog biting louse Trichodectes canis- may cause pruitis, alopecia
name for cat biting louse Felicola subrostratus- prutisis, alopecia
lifecycle of Louse 14-21 days, egg->nymph1-> nymph2-> nymph 3->adult---- 3 weeks lifecycle
transmission of louse host specific, do not survive long off the host, direct contact
treatment of biting lice imidacioprid, fipronil, selamectin
treatment for sucking lice no licensed products, likely treatments for biting lice would be sufficient good management and spot on insecticides
flies larvae of green/ blue bottles cause fly strike in rabbits and sheep may cause significant damage
prevention of fly strike good management and use of products such as rearguard, an insect regulator
Created by: lucy.fox
 

 



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