Class Cotyloda (Pseudophyllidea) False Tapeworms Flashcards
Cotyloda (Pseudophyllidae)
✓ mm to 10 meters
✓ w/ 2 deep groves called bothria
✓ hooks are absent
✓ each segment has usually one set of reproductive organs
✓ w/ numerous testes
✓ w/ scattered vitellaria
✓ bilobed ovary
✓ “uterine pore” is present through which the eggs are discharged
✓ eggs are operculated and unembryonated
3 Genera of Family Diphylobothridae
✓ Diphyllobothrium
✓ Spirometra
common name of Diphyllobothrium latum
broad fish tapeworm of man
Scientific name of broad fish tapeworm of man
Diphyllobothrium latum
Host of Diphyllobothrium latum “broad fish tapeworm of man”
- fish-eating mammals (man, dogs, cats)
predilection site of Diphyllobothrium latum “broad fish tapeworm of man”
small intestine
SN of 1st intermediate host of Diphyllobothrium latum “broad fish tapeworm of man”
Copepods
SN:
Diaptomus vulgaris, Cyclops strenuus
2nd intermediate host of Diphyllobothrium latum “broad fish tapeworm of man”
Freshwater fish (trout, spike, salmon, perch)
largest tapeworm of man
Diphyllobothrium latum
Eggs of Diphyllobothrium latum
operculated, light brown with round ends
the exact cause of anemia of Diphyllobothrium latum in man is not yet well established. the ff may be possible causes;
✓ increased blood destruction
✓ inhibition of hematopoiesis factor
✓ competition for vit. B12
Clinical signs of Diphyllobothrium latum
✓ non-specific abdominal symptoms
✓ anemia
✓ malnutrition
Drug of choice for Diphyllobothrium latum
Praziquantel 25mg/kg
Niclosamide
Quinacrine
Common name of Spirometra erinacei
Zipper tapeworm
SN of Zipper worm
Spirometra erinacei
Caused by several spp. of spirometra
Spirometrosis (zipper worm disease)
Final Host of Spirometra erinacei (Zipper worm)
Carnivores
1st IH of Spirometra erinacei (zipper tapeworm)
Copepods (cyclops)
2nd IH of Spirometra erinacei (zipper tapeworm)
frog, reptile, mammals, birds
the second larval stage (plerocercoid) is specifically referred to as?
Sparganum
Most common Pseudophyllidean tapeworm in the Philippines
(Spirometra) Spirometra erinacei
sparganosis in huma
sparganum
spirometra spp. prepatent period takes about?
10-30 days
infection of man with plerocercoid is acquired by;
✓ drinking water containing procercoid infected crustacea
✓ eating plerocercoid infected hosts such as pig
✓ when infected frog or snake flesh is used as dressing for wound or ice
man disease characterized by the presence of larvae in muscles and tissues
sparganosis
clinical signs of sparganosis
urticaria, edema, inflammation in preorbital area
treatment for sparganosis
surgical removal of plerocercoid or sparganum in humans
Arecoline Hydrobromide
Dichlorfen 20 mg/kg
Quinacrine HCI 15-40 mg/kg
disease of cyprinoid and silurid fish
Ligulosis
ligulosis caused by plerocercoids of tapeworms
Ligula intestinalis and Digramma interrupta in birds
parasitic castration
Ligula intestinalis
one or two plerocercoids in the abdominal cavity of fish may cause?
✓ growth retardation
✓ parasitic castration
✓ death of infected fishes
infected stage of ligulosis reached in?
14 months
disease of cyphenoid fish especially in cultured carp
Bothriocephalosis
intermediate host of bothriocephalosis
copepods
prepatent period of bothriocephalosis
20-25 days
how many worms in young carp may be fatal due to severe enteritis
80-100 worms
act as carriers of bothriocephalosis
adult fishes
bothriocephalosis caused by?
Bothriocephalus acheilognathi
