Family: CYCLOCOELIDAE

Question 1

Characteristics of Family: CYCLOCOELIDAE

Answer 1

-Parasites of aquatic birds
-Usually occurs in the body cavity, air sacs, nasal cavity and respiratory tract
-Oral suckers is absent; ventral sucker may also be absent
-Intestinal Ceca may be simple or branched and are joined together posteriorly forming a complete ring
-Uterus contains eggs with miracidium

Question 2

Genera of Family CYCLOCOELIDAE

Answer 2

Tracheophilus
Cyclocoelium

Question 3

Tracheophilus cymbius Host:

Answer 3

Domestic and wild ducks

Question 4

Site of Tracheophilus cymbius

Answer 4

Trachea, bronchi and orbital sinus

Question 5

Intermediate host of Tracheophilus cymbius

Answer 5

Snails (Helisoma sp and Planorbis sp)

Question 6

Pat. Birds die of asphyxia due to tracheal obstruction

Answer 6

Tracheophilus cymbius

Question 7

Treatment for Tracheophilus cymbius

Answer 7

Albendazole and Praziquantel

Question 8

Final Host of Tracheophilus cucumerinum

Answer 8

Ducks

Question 9

Tracheophilus cucumerinum Site:

Answer 9

Trachea, bronchi, air sacs, and esophagus

Question 10

Tracheophilus cucumerinum morphology?

Answer 10

Both oral And ventral suckers are absent; intestines possess a median diverticula

Question 11

Host: Aquatic birds
Site: Body cavity, nasal cavity and air sacs
Morphology: Ceca without diverticula

Answer 11

Cyclocoelium mutabile

Question 12

Host: ducks and geese
Site: nasal and orbital sinus

Answer 12

Hyptiasmus tumidus

Question 13

Life Cycle of Tracheophilus cymbius

Answer 13

Eggs are voided with nasal discharge or feces
Hatches and frees a miracidium
Miracidium swims in water
No sporocyst
Redia penetrates snail
Redia produces cercaria in snails
Cercaria do not leave the snail but encysts on if after escaping from the redia
Birds ingest infected snails
Larvae reach the bronchi via the blood stream