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Parasites
304.2 Vet nursing parasites
Definition | Term |
---|---|
Mite with an elongated shape, lives deep in the hair follicles | Demodex canis |
Mite that lives in the ear, long curly legs | Otodectes cynotis |
Mite with triangular spines on its back. Causes sarcoptic mange | Sarcoptes scabiei |
Mite with big claws. Also known as walking dandruff. | Cheiletiella spp |
Blood red mite whose larvae cause problems, only 3 pairs of legs. | Trombicula autumnalis |
Scientific name for Tapeworms | Cestodes |
Most common tick in the UK | Ixodes ricinus |
Most common flea in the UK | Ctenocephalides felis |
Live outside the host | Ectoparasite |
Live Inside the host | Endoparastite |
Ectoparasite with 3 sets of legs as an adult, body is divided into 3 parts | Insect |
Ectoparasite with 4 sets of legs as an adult, body is divided into 2 parts | Arachnid |
Louse with a head as wide as its body, large mandibles | Chewing/biting louse |
Louse with a small head compared to body | Sucking louse |
Scientific name for Roundworms | Nematodes |
Welsh tapeworm, dog-to-sheep lifecycle | Echinococcus granulosus |
Most common tapeworm in dogs in UK. Intermediate host is the flea. | Dipylidium caninum |
Head of the tapeworm | Scolex |
Hooked mouth of the tapeworm | Rostellum |
Chain of tapeworm segments | Strobila |
Individual tapeworm segments | Proglottid |
Ascarid nematodes | Toxocara spp, Toxascaris spp |
Nematode where the adult worm lives in the hosts heart | Heartworm |
Infection of this canine nematode occurs through eating slugs and snails. Just known as heartworm in the UK. | Angiostrongylus vasorum |
Ascarid nematode, passed through placenta at 42 days of pregnancy and in mother's milk. | Toxocara canis |
Ascarid nematode passed through mother's milk. is NOT transmitted through placenta | Toxocara cati |
Small unicellular endoparasites | Protozoa |
Drug used to treat parasitic infection | Antiparasitic |
Drug used to treat internal parasitic infection | Endoparasiticide |
Drug used to treat worm infection | Antihelmintic |
Drug that acts against more than one group of worms | Broad spectrum antihelmintic |
Drug that kills the parasite | Vermicide |
Drug that paralyses the parasite before it is passed from the host | Vermifuge |
How often should adult dogs be wormed? | 3 months broad spectrum wormer and every month for lungworm |
How often should adult cats be wormed? | Monthly if hunters, otherwise every 3 months |
When should pregnant bitches be wormed? | Daily from day 40 of pregnancy until 3 days after birth |
How often should puppies and kittens be wormed? | Every 2 weeks until 2 months of age, then once a month until 6 months old. |
When must foals be wormed? | 2-3 months old |
What is the main group of endoparasites which is a concern in rabbits? | Protazoa |
Scientific name for chewing lice? | Mallophaga |
Scientific name for sucking lice? | Anoplura |
Infection with lice is know as? | Pediculosis |
Canine chewing louse, wide flat head | Trichodectes canis |
Feline chewing louse, large conical head | Felicola subrostratus |
Canine sucking louse | Linognathus setosus |
The common bluebottle | Calliphora vomitoria |
The invasion of living tissue by fly larvae | Fly strike/myaisis |
Scientific name for midges | Culicoides spp |
Allergic reaction in horses to Culicoides bites | Sweet itch |
Scientific name for bot flies | Gasterophilus |
Scientific name for flukes | Trematodes |
Potential complications in humans who ingest Toxocara canis | Occular or visceral larval migrans. The larvae migrate to organs around the body and encapsulate themselves in the connective tissue. Can cause pain, blindness and CNS issues. |
3 cestode species | Dipylidium caninum, Taenia spp, Echinococcus spp |
3 nematode species | Toxacara spp, Angiostrongylus vasorum, Aelurostrongylus abstrusus |
Canine lung worm that causes granulomatous nodules at the tracheal bifurcation | Oslerus osleri |
Tapeworm which causes hyatid cysts | Echinicoccus spp |
Northern hookworm. Can cause local dermatitis as larvae penetrate skin. | Uncincaria stenocephala |
Heartworm that is not found in the UK. | Dirofilaria immitus |
Heartworms inhabit this area in the host | Pulmonary artery and right hand side of the heart |