Trematodes of Pig Horse

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Trematodes of PigHorse Poultry

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Trematode of Pig

• Genus Fasciolopsis
• Genus Echinostoma (Paryphostomum
• Genus Gastrodiscoides

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Fasciolopsis buski

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

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Morphology

• Size 3-7.5 x 0.8-2.0 cm
• body oval, broaden posterior
• large ventral sucker
• short pharynx esophagus

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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

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Fasciolopsis buski
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Fasciolopsis buski
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Life cycle

• Intermediate host snail
• Trochoibis, Segmentina, Planorbis
• plant
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Pathogenesis

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

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Diagnosis Treatment

• Dx fecal examination
• Rx hexylresorcinol, tetrachlorethylene,
  niclosamide, plaziquantel, niclofolan

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Prevention

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

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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

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

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Echinostoma
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Life cycle

• 1st intermediate host
• Indoplanorbis, Lymnea, Planorbis
• 2nd intermediate host same 1st host
• Pila, Vivipara, ???????

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Trematode of Horse

• Gastrodiscus aegypticus

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Gastrodiscus aegypticus

• Host ???, ??, ???, ????
• organ small large intestine
• body saucer shape
• oral sucker anterior end

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Gastrodiscus aegypticus

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

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Gastrodiscus spp.
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Life cycle

• Intermediate host
• Lymnea, Indoplanorbis, Bulinus
• metacercaria water plants

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

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Trematode of Poultry

• Echinostoma revolutum
• Hypoderaeum conoideum
• Prosthogonimus pellucidus

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Echinostoma revolutum

• Host poultry (duck, geese, others)
• organ large intestine, caecum
• size 10-22 x 2.25 mm
• head collar spine 37 spines

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Echinostoma revolutum

• Corner spines 5 spines
• testes lobe, tandem
• ovary anterior to testes

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Life cycle

• 1st intermediate host
• Indoplanorbis, Lymnea, Stagnicola, Helisoma,
  Physa
• 2nd intermediate host
• same 1st host, Vivapara, ???????

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Pathogenesis

• Severe infection enteritis in pigeon
• Diagnosis fecal examination

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Treatment

• Brothianide
• oxycloxanide
• rafoxanide
• flubendazole
• plaziquantel

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Hypoderaeum conoideum

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

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Hypoderaeum conoideum

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

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

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Prosthogonimus pellucidus

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

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Prosthogonimus spp.
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Prosthogonimus spp.
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Life cycle

• 1st intermediate host
• Bithynia, Amnicola
• 2nd intermediate host
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• no redia

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Pathogenesis

• Inflammation of oviduct
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• ?????? praziquantel, albendazole

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