Lab 11 Diphyllobothrium latum Echinococcus granulosus Life cycle

Lab. 11 Diphyllobothrium latum Echinococcus granulosus

Life cycle of Diphyllobothrium latum

Diphyllobothrium latum Whole Mount (adult worm 3 – 10 meter )

bothria (bothria) Carmine s. Diphyllobothrium latum scolex almond in shape 2 – 3 mm with two sucking groove ( bothria )

Diphyllobothrium latum scolex and segments

Diphyllobothrium latum mature segments

Diphyllobothrium latum Mature segment

bothria (bothria) Carmine s. Diphyllobothrium latum scolex almond in shape 2 – 3 mm with two sucking groove ( bothria )

Echinococcus granulosus:

Rostellum with No. Echinococcus granulosus: A. Adult : Ø With scolex, Ø 1 -2 immature segment, Ø 1 -2 mature segment and gravid segment. } scolex of hooks 4 suckers Immature segment Mature segment Gravid segment Uterus full with ova

Echinococcus spp. B. Ova: Indistinguishing from that of Teania spp. Iodine stain

Echinococcus granulosus C. Hydatid sand: Consist of protoscolices cordate in shape, With inverted scolex and hooks

Echinococcus granulosus C. Section in hydatid: Cyst-bladder like structure with fibrous capsule produced by the host, outer laminated membrane of parasite, Germinal layer branching into brood capsules from which protoscolices bud off empty space occupied by hydatid fluid and hydatid sand.

Hematoxylim - eosin s. hydatid cyst in X – Ray the water – lily sign ( sign of camelotte )