Trematodes of Pig Horse Poultry Trematode of Pig

Trematodes of Pig Horse & Poultry ��������

Trematode of Pig • Genus Fasciolopsis • Genus Echinostoma (Paryphostomum • Genus Gastrodiscoides

Fasciolopsis buski • Host: pig, man • Organ: small intestine • Geo. Distri. : Southeast Asia • Thailand: central

Morphology • Size: 3 -7. 5 x 0. 8 -2. 0 cm • body: oval, broaden posterior • large ventral sucker • short pharynx & esophagus

Morphology • Intestine: tubular from ant. to post. • Testes: branches, tandem • ovary: branches, right of the body • ootype: large, round • vitelline gl. : lateral of the body

Fasciolopsis buski

Fasciolopsis buski

Life cycle • Intermediate host: snail • Trochoibis, Segmentina, Planorbis • plant : • ������ , ������� , ����

Pathogenesis • Virulence in man • cause: local inflammation, deep ulcer, weight loss, diarrhea, ascites, edema, death

Diagnosis & Treatment • Dx: fecal examination • Rx: hexylresorcinol, tetrachlorethylene, niclosamide, plaziquantel, niclofolan

Prevention. 1 Plant. 2 Water resource. 3 Fecal examination. 4 Deworming: pig, man

Echinostoma malayanum (Paryphostomum sufratyfex( • Host: pig, man • organ: small intestine • size: 7 -12 x 2 -3 mm (cucumber seed( • head collar spine = 40 -48 spines

• Large ventral sucker • Tegument: spine • Testes: deep lobe, tandem • ovary: round, ant. right of testes

E c h i n o s t o m a

Life cycle • st 1 intermediate host : • Indoplanorbis, Lymnea, Planorbis • nd st 2 intermediate host: same 1 host • Pila, Vivipara, ��� �� ��

Trematode of Horse • Gastrodiscus aegypticus

Gastrodiscus aegypticus • Host: ��� , ���� • organ: small & large intestine • body: saucer shape • oral sucker: anterior end

Gastrodiscus aegypticus • Posterior sucker: posterior end • intestinal caeca: tubular • testes: deep lobe, diagonal • ovary: posterior to testes

Gastrodiscus spp.

Life cycle • Intermediate host : • Lymnea, Indoplanorbis, Bulinus • metacercaria: water plants

• Pathogenesis • young adult more virulence • Diagnosis • fecal examination • Treatment • hexachlorophene, dichlorvos, oxycloxanide

Trematode of Poultry • Echinostoma revolutum • Hypoderaeum conoideum • Prosthogonimus pellucidus

Echinostoma revolutum • Host: poultry (duck, geese, others( • organ: large intestine, caecum • size: 10 -22 x 2. 25 mm • head collar spine: 37 spines

Echinostoma revolutum • Corner spines = 5 spines • testes: lobe, tandem • ovary: anterior to testes

Life cycle • 1 st intermediate host • Indoplanorbis, Lymnea, Stagnicola, Helisoma, Physa • 2 nd intermediate host • same 1 st host, Vivapara, ��� �� ��

Pathogenesis • Severe infection: enteritis in pigeon • Diagnosis: fecal examination

Treatment • Brothianide • oxycloxanide • rafoxanide • flubendazole • plaziquantel

Hypoderaeum conoideum • Size: 5 -12 x 2 mm • large ventral sucker • head collar spine = 47 -53 spines • corner spine = 2 spines

Hypoderaeum conoideum • Testes: short sausage shape, tandem • ovary & ootype: ant. to testes • club- shaped cirrus sac • genital pore close to oral sucker

• 1 st & 2 nd intermediate host • Lymnea, Indoplanorbis • Pathogenesis: local enteritis • Diagnosis: fecal examination • Treatment: same as E. revolutum

Prosthogonimus pellucidus • Organ: oviduct, bursa of Fabricius, cloaca • size: 8 -9 x 4 -5 mm, broaden posterior • testes: oval, horizontal • cirrus sac: long

Prosthogonimus spp.

Prosthogonimus spp.

Life cycle • st 1 intermediate host: • Bithynia, Amnicola • nd 2 intermediate host: • ������ • no redia

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Trematodes of Man S. mansoni S. haematobium S. japonicum

Trematodes of Man S. mansoni S. haematobium S. japonicum