CESTODES Flashcards
Name parasites in the superfamily - cestodes
anoplocephala perfoliata/magnum
paranplocephala mamillia
taenia spp
echinococcus granulosus and multilocularis
dipydium caninum
which parasites are uique to equids?
a. perfoliata and magum
p. mamillia
describe the basic cestode lifecycle
- indirect
- adults in SI
- proglottids - shed and disintegrate in faeces
- eggs ingested by IH and metacestode stage develops
- metacestode ingested by DH
describe the basic characteristics of cestodes
head = scolex with a rostellum
rostellum may/may not have hooks
lappets = usually x4
body = strobilli
no alimentary tract
proglottids have genital pore x1
name the 4 types of metacestodes
- cysticercus
- coenurus
- hydatid
- cysticercoid
name this and give an example of the cause: is:
cysticercus
taenia spp
name this and give an example
hydatid
echinococcus
name and give example?
cysticercoid
diplydium caninum
describe the basic properties of cestode eggs
circular - ovoid
thick shell
oncosphere
striped brown outershell
infective egg
anoplocephala perfoliata IH is what?
orbatid mite
what is the Metacestode stage (MS) in anoplocephala perfoliata?
cysticercoid
what is the pathogenesis of anoplocephala perfoliata?
enteritis
colic
<3yo
what is the general treatment for cestodes and what difference in tx plan is their for horse?
praziquantel - removes adults
2x dose in H
control IH - mites, fleas, lice, eating dead livestock
Tx interval = PPP of cestode
what is the PPP of anocephala perfoliata ?
2mths
what are the regulations on pets re-entering the UK regarding tx?
must be tx with praziquantel 1-5d before re-entry
what atenia spp use sheep as the IH? and where is the metacestode?
t. ovis (muscle)
t. hydatigena (peritonium)
t. multiceps (brain)
which taenia spp use rabbits as the IH and where are the metacestodes?
t. pisiformis (peritoneium)
t. serialis (SC tissues)
name the two echinococcus spp and the major chatacteristics?
e. granulosus - IH = domestic livestock; DH = dog
e. multilocularis - IH = wildlife; DH = foxes; alveolar, horrible dz
what are the symptoms of human hydatid disease and wht is responsible?
cysts in liver, lung and brain
jaundice, cholangitis, pleurisy, anaphylactic shock, neuro signs
echinococcus
name the only tapeworm of cats ONLY and how it is identified
taenia teaniformis
bell shaped proglottis
16 d PPP
IH mouse - treat mousers lots!
what animals does diplydium caninum effect?
C+D
what is characteritic of d. caninum morphology?
scloex with 4 suckers and rosteullum with 4+ hooks
what is the IH of d. canimum
ctenocephelides felis
trichodectes canis
why are d. caninum usually treated - as they are actually asymptomatic
motile proglottids are horrid to look at
what is the PPP of d. caninum ?
4-6wks
