Parasite: is an organism that lives off of a host in order to benefit the parasite
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What are the two types of parasite and what does this mean?
Endoparasite (inside the body) and Ectoparasite (outside the body)
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What are the ectoparasites divided into and how are these characterised?
Insects (6 legs, 3 pairs, 3 body parts: head, thorax, abdomen) and arachnids (8 legs, 2 pairs, 2 body parts: head and body)
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Give an example of an ectoparasite that is classed as an insect
Fleas and lice
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Give an example of an ectoparasite that is classed as an arachnid
Mites and ticks
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Give an example of a disease that is caused by an arachnid
Cheyletiella (mite )and Sarcoptic mange (mite)
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What type of ectoparasite is responsible for the transmission of lymes disease?
Black-legged tick (arachnid)
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Define permanent parasite:
Permanent parasite: parasite lives on the host throughout their whole life-cycle
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Define and describe the different types of hosts'
Definitive host: The parasite reproduces in/on this host. Intermediate host: The parasite carry out part of its life-cycle in/on this host. Transport host: The host that transports the PS from one host to anoth,without playing any part in its life-cy
Flead= insect (3 pairs of legs = 6 legs), 3 body sections : head, thorax, abdomen, wingless, visible to the naked eye, pale-brown and shiny
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Describe the effect of a flea
Only adults are parasitic (blood suckers), Pruritus (itching), cause inflammation
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Describe the life-cycle of a flea:
Flea lays smooth eggs on the host and they fall off; Eggs hatch between 2-14 days into larvae; Larvae feed on adult flea faeces and other organic debris; larvae moult twice then pupate into an adult (Depend on temp); flea waits for signs of host
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How long can the life-cycle of a flea take
3 weeks to 2 years. Depends on the temperature. Intensive parasite
Female lays 200-300 'nits' a month; nits are glued to the hair shaft; a nymph (immature adult) hatches; Nymph undergoes 3 moults to become an adult
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How long is the life-cycle of a louse?
2-3weeks from egg to adult
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what type of parasite are lice?
Permanet ectoparasite
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How can lice be treated?
topical liquids: advantage and frontline
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Outline the life-cycle of a maggot
Fly lays eggs in/on a host (wounds, sores, genitals); larvae hatch and infest living tissue; larvae cause severe tissue damage; larvae moult and pupate, changing into flys
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What type of parasite are mites?
permanent ectoparasite
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What are the two types of mites?
Burrowing and surface
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Give an example of a burrowing mite
Scabei mite- sarcoptic mange, demodex mange
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Give 3 examples of a surface mite
Cheyletiella, harvest mites and ear mites
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How do sarcoptes and demodex mites differ?
sarcoptes larger= 0.4mm, round shaped, found on ears, tips of ears and elbows, pruritic .demodex smaller= 0.2mm , cigar shaped, found deep in hair follicles, not pruritic
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Describe the appearance of nematodes (round worms)
Spaghetti like, cream coloured, cylindrical and 10cm long
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Outline preventions of nematodes
Routing worming on all adult dogs, pregnant ******* and puppies, Prompt and thorough removal of faeces, prevent dogs licking your face
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Describe the appearance of cestodes (tapeworms)
cream coloured, flattened, segmented (ribbon), 50-75cm, hocks and suckers
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Other cards in this set
Card 2
Front
What are the two types of parasite and what does this mean?
Back
Endoparasite (inside the body) and Ectoparasite (outside the body)
Card 3
Front
What are the ectoparasites divided into and how are these characterised?
Back
Card 4
Front
Give an example of an ectoparasite that is classed as an insect
Back
Card 5
Front
Give an example of an ectoparasite that is classed as an arachnid
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