Dipylidium caninum & Anoplocephala spp. PDF

Faculty of Veterinary Medicine - Parasitology Department Veterinary Parasitology 0 Cestodes Genus: Dipylidium caninum Genus: Anoplocephala spp. l~~na Magdy Elsead~_w_...

Faculty of Veterinary Medicine - Parasitology Department Veterinary Parasitology 0 Cestodes Genus: Dipylidium caninum Genus: Anoplocephala spp. l~~na Magdy Elsead~_w_y -~= ~ ~ j Genus: Dipylidium caninum  0.i lk~ Faculty of Veterinary Medicine - Parasitology ,~ ~;-~~ ;... Department Veterinary Parasitology D1oyl1d1um can,num. F.H: Dog, Cat and incidentafly Man. Site in F.H: Small intestine. I.H: Fleas (Ctenocephalidis canis, Ctenocephalidis felis and Pulex irritance) and Lice (trichodectes canis). Site in I.H: Abdominal cavity of I.H. Larval stage: Cryptocystic Cysticercoid. Macroscopically Shape: Large segmented tape worm and the segments has cucumber seed appearance. Size: 50 cm long. Color: Grayish white.  0 Faculty of Veterinary Medicine - Parasitology Department Veterinary Parasitology Dipylidium caninum Scolex Small (0.4 mm). 4 cup-shape muscular sucker. Provided with protrusable rostellum armed with 30 150 rose::::=====-=-=-=--=-:________ thorn-shaped hooks arranged in 3-7 rows. 0 @ Faculty of Veterinary ~edicine - ~arasitology ~,.J; Dipylidium caninuRfpartment Veterinary Parasitology Mature segment: Shape: Longer than broad narrow at both ends and wide at the middle giving the appearance of large rice grain or cucumber seed. No. of set of genital organs: Double set of genital organs. Common genital pore: Bilateral situated. Testes: Numerous (200 testes) and scattered on the segment. Ovary: Horse shoe-shape. Vitelline glands: Compact mass behind the ovary. I Dipylidium caninum Gravid segment: Shape: Longer than broad narrow at both ends and wide at the middle giving the appearance of large rice grain or cucumber seed and longer than mature segment. Uterus: Breakdown into number of egg capsules ' ·~ each containing (8-20 8~... ~ egg).  Faculty of Veterinary Medicine - Parasitology Dipylidium caninum Life cycle Department Veterinary Parasitology 0 , 0Adult flea harbours A the infective cyslicercood Humans. normally Children. c licercoid f) acquire the l nfection by G Host tS infected / --------- ,ngesling the infected flea. Infected larval by ingesting fleas into adult Ilea.. ' og:~,\ t he eggs and penetrate the E)~ ~ ~&~ ~ ~~.:;- infected fleas to humans. / li'l '. 0 intest,nal w a11ofthe larvae. Cystioercoid tarvae develop in the body cavity. Gravid progtottids are ~. 1:) , ~~=r:e~~~~ ~n:,= region of e ithet anama or human hosts. e O O A. ------------ 0 Adult in s,nell intestine Egg poc:kets containing Each proglotbd contains egg pac:kelS emb,yon.ated eggs thal are hetd togelher by an out~ ore ingested by larval embryonic membrane (see €}). stage of flea The progloltids disintegrate and release the egg packets. A.=lnfe