Class Cotyloda (Pseudophyllidea) False Tapeworms

Question 1

Cotyloda (Pseudophyllidae)

Answer 1

✓ 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

Question 2

3 Genera of Family Diphylobothridae

Answer 2

✓ Diphyllobothrium
✓ Spirometra

Question 3

common name of Diphyllobothrium latum

Answer 3

broad fish tapeworm of man

Question 4

Scientific name of broad fish tapeworm of man

Answer 4

Diphyllobothrium latum

Question 5

Host of Diphyllobothrium latum “broad fish tapeworm of man”

Answer 5

• fish-eating mammals (man, dogs, cats)

Question 6

predilection site of Diphyllobothrium latum “broad fish tapeworm of man”

Answer 6

small intestine

Question 7

SN of 1st intermediate host of Diphyllobothrium latum “broad fish tapeworm of man”

Answer 7

Copepods
SN:
Diaptomus vulgaris, Cyclops strenuus

Question 8

2nd intermediate host of Diphyllobothrium latum “broad fish tapeworm of man”

Answer 8

Freshwater fish (trout, spike, salmon, perch)

Question 9

largest tapeworm of man

Answer 9

Diphyllobothrium latum

Question 10

Eggs of Diphyllobothrium latum

Answer 10

operculated, light brown with round ends

Question 11

the exact cause of anemia of Diphyllobothrium latum in man is not yet well established. the ff may be possible causes;

Answer 11

✓ increased blood destruction
✓ inhibition of hematopoiesis factor
✓ competition for vit. B12

Question 12

Clinical signs of Diphyllobothrium latum

Answer 12

✓ non-specific abdominal symptoms
✓ anemia
✓ malnutrition

Question 13

Drug of choice for Diphyllobothrium latum

Answer 13

Praziquantel 25mg/kg
Niclosamide
Quinacrine

Question 14

Common name of Spirometra erinacei

Answer 14

Zipper tapeworm

Question 15

SN of Zipper worm

Answer 15

Spirometra erinacei

Question 16

Caused by several spp. of spirometra

Answer 16

Spirometrosis (zipper worm disease)

Question 17

Final Host of Spirometra erinacei (Zipper worm)

Answer 17

Carnivores

Question 18

1st IH of Spirometra erinacei (zipper tapeworm)

Answer 18

Copepods (cyclops)

Question 19

2nd IH of Spirometra erinacei (zipper tapeworm)

Answer 19

frog, reptile, mammals, birds

Question 20

the second larval stage (plerocercoid) is specifically referred to as?

Answer 20

Sparganum

Question 21

Most common Pseudophyllidean tapeworm in the Philippines

Answer 21

(Spirometra) Spirometra erinacei

Question 22

sparganosis in huma

Answer 22

sparganum

Question 23

spirometra spp. prepatent period takes about?

Answer 23

10-30 days

Question 24

infection of man with plerocercoid is acquired by;

Answer 24

✓ 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

Question 25

man disease characterized by the presence of larvae in muscles and tissues

Answer 25

sparganosis

Question 26

clinical signs of sparganosis

Answer 26

urticaria, edema, inflammation in preorbital area

Question 27

treatment for sparganosis

Answer 27

surgical removal of plerocercoid or sparganum in humans Arecoline Hydrobromide Dichlorfen 20 mg/kg Quinacrine HCI 15-40 mg/kg

Question 28

disease of cyprinoid and silurid fish

Answer 28

Ligulosis

Question 29

ligulosis caused by plerocercoids of tapeworms

Answer 29

Ligula intestinalis and Digramma interrupta in birds

Question 30

parasitic castration

Answer 30

Ligula intestinalis

Question 31

one or two plerocercoids in the abdominal cavity of fish may cause?

Answer 31

✓ growth retardation ✓ parasitic castration ✓ death of infected fishes

Question 32

infected stage of ligulosis reached in?

Answer 32

14 months

Question 33

disease of cyphenoid fish especially in cultured carp

Answer 33

Bothriocephalosis

Question 34

intermediate host of bothriocephalosis

Answer 34

copepods

Question 35

prepatent period of bothriocephalosis

Answer 35

20-25 days

Question 36

how many worms in young carp may be fatal due to severe enteritis

Answer 36

80-100 worms

Question 37

act as carriers of bothriocephalosis

Answer 37

adult fishes

Question 38

bothriocephalosis caused by?

Answer 38

Bothriocephalus acheilognathi