Nematodes Flashcards
one organism benefits from while the other is unaffected
commensalism
both organisms benefit
mutualism
one organism benefits while the other is harmed
parasitism
shelters sexual, adult stages of parasites
definitive host
harbors asexual or larval stages
intermediate host
where parasite lives without multiplying or developing
transport host
vectors can be
mechanical: parasite does not develop
biological: intermediate host
mode of entry into host
infective stage
availability of susceptible host
definitive host
accommodating locations and environment for maturation and development
different organ systems
mode of exit from host
urine, feces, reproductive secretions, etc
phylum for roundworms
nematoda
shape of roundworms
cylindrical body, multicellular
digestive tract of roundworms
one continuous tube from mouth to anus (pseudocoelom)
what body systems to roundworms have
digestive and reproductive (no resp. or nervous)
what life cycle stage are roundworms infective
L3
modes of transmission for roundworms
ingestion, ingestion of intermediate host, skin penetration
where are roundworms found in hosts body
feces, blood, sputum, urine, some can be found in lungs, heart, urinary bladder or kidney
Ascarids of dogs and cats
Toxocara canis and cati
common name for T canis and T cati
roundworms
how large are Ascarids
3-18 cm in length
Strongyloidea of dogs and cats
Ancylostoma caninum and A. tubaeforme (braziliense and dog and cat)
common name for Ancylostoma
hookworms
symptoms of hookworms
severe anemia in puppies and kittens
Trichostrongyloidea in cats
Ollulanus tricuspis
symptoms of O. tricuspis in cats
vomiting
Rhabditoidea
intestinal threadworms
Metastrongyloidea
hair lungworms
where are hair lungworms found
bronchioles and lung parenchyma of sheep and goats
Trichuroidea of dogs and cats
Trichuris vulpis and campanula/serrata
common name for Trichuris spp
whipworms
what do whipworm eggs look like
thick yellow-brown shell with polar plugs
urinary bladder worm of dogs and cats
Pearsonema plica
Trichuroidea associated with undercooked meat
Trichinella spiralis (Trichinosis in humans)
Oxyroidea of horses
Oxyuris equi
Oxyroidea common name
pinworms
symptoms of pinworms
intense anal pruritis
Spiruroidea spp
Habranoma sp and Draschia megastoma (parasites of horses)
Spiruroidea of dogs and cats
Thelazia californiensis
Thelazia californiensis common name
eyeworms of dogs and cats
Spiruroidea of sheep and cattle
T. rhodesii and T. gulosa
Dioctophymoidea in dogs
Dioctophyma renale (giant kidney worms of dogs)
Stephanurus dentatus
kidney worm in swine
Filaroidea
Dirofilaria immitis
Dirofilaria immitis common name
canine heartworm (cats and ferrets also)
where are heartworms found
right ventricle and pulmonary artery
prepatent period for heartworms
6 mo in dogs, 7-8 mo in cats
