Diseases / List of Parasitic Diseases / Disease description:
Prosthogonimus (Oviduct Fluke) Infection in Waterfowl

INFORMATION AVAILABLE

GENERAL INFORMATION

CLINICAL CHARACTERISTICS & PATHOLOGY

INVESTIGATION & DIAGNOSIS

TREATMENT & CONTROL

SUSCEPTIBILITY & TRANSMISSION

ENVIRONMENT & GEOGRAPHY

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General and References

Disease Summary

WATERFOWL Fluke infection of the oviduct and bursa of Fabricius, causing inflammation of the oviduct, decreased egg laying and occasionally mortality.

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Alternative Names (Synonyms)

  • Oviduct Fluke Infection

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Disease Type

 Parasitic - Trematode Infection

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Infectious/Non-Infectious Agent associated with the Disease

Prosthogonimus ovatus, Prosthogonimus spp. (separate species or synonym status of many of these flukes is uncertain) 0.5-1.5cm long; digenic flukes (trematodes), using freshwater snails as the first intermediate host and dragonflies as the second intermediate host (B24, B49, B91).

Infective "Taxa"

Non-infective agents

--

Physical agents

-- Indirect / Secondary

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References

Disease Author

Debra Bourne
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Major References / Reviews

Code and Title List

B24, B32.33.w33, B49, B91

Other References

Code and Title List

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Clinical Characteristics and Pathology

Detailed Clinical and Pathological Characteristics

General

WATERFOWL Salpingitis, reduced egg production and occasionally mortality.

Clinical Characteristics

WATERFOWL
  • In laying ducks (and laying chickens): production of abnormal (soft shelled or unshelled) eggs, discharge of milky, calcium-containing fluid from the cloaca, pasting together feathers around the cloaca.
  • Listlessness, pendulous abdomen and 'penguin' gait may develop, with greatly reduced egg laying (may stop completely), feathers around cloaca soiled with albumen, sometimes containing yellow-white strands and flukes.
  • Eggs laid may contain flukes.
  • Death may follow.

(B24, B49)

Incubation

WATERFOWL Seven days from ingestion to fluke maturation for infection in the oviduct, 14 days to maturity if in the bursa of Fabricius (B91).

Mortality / Morbidity

WATERFOWL Mortality has been reported (B91).

Pathology

WATERFOWL Gross Pathology:
  • Oviduct - Salpingitis (oviduct inflammation) - catarrhal to caseous.
  • Body cavity - peritonitis associated with broken yolks (may be inspissated), albumen, flukes and bacteria. Congestion and haemorrhage of serous membranes.
  • Flukes may be found in oviduct, bursa of Fabricius, cloaca and rectum.

(B24, B49, B91).

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Human Health Considerations

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Susceptibility / Transmission

General information on Susceptibility / Transmission

WATERFOWL
  • Susceptibility: Young birds are susceptible to the development of infection in the bursa of Fabricius, and adult females to infection of the oviduct (B91).
  • Transmission: Ingestion of second intermediate host (dragonfly) (B91).

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Disease has been reported in either the wild or in captivity in:

 

Host Species List

 

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Disease has been specifically reported in Free-ranging populations of:

 

Host Species List

 

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Environment/Geography

General Information on Environmental Factors/Events and Seasonality
Usually occurs in spring or early summer in temperate areas (B24, B49).

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Regions / Countries where the Infectious Agent or Disease has been recorded

Worldwide (B49).

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Regions / Countries where the Infectious Agent or Disease has been recorded in Free-ranging populations

Worldwide (B49).

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General Investigation / Diagnosis

General Information on Investigation / Diagnosis

WATERFOWL Fluke eggs (25 micrometers, operculate) in cloacal discharges, or in the abdominal cavity at post mortem examination (B24). Flukes may be found in oviduct, bursa of Fabricius, cloaca and rectum (B91).
Related Techniques
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Similar Diseases (Differential Diagnosis)

WATERFOWL --

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Treatment and Control

Specific Medical Treatment

WATERFOWL Anthelmintics, e.g. fenbendazole 5mg/kg, albendazole, praziquantel 5-10mg/kg, flubendazole (B24, B49).
Related Techniques
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General Nursing and Surgical Techniques

WATERFOWL --
Related Techniques

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Preventative Measures

Vaccination WATERFOWL --
Prophylactic Treatment

WATERFOWL

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Related Techniques

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Environmental and Population  Control Measures

General Environment Changes, Cleaning and Disinfection

WATERFOWL

Elimination of the snails which act as the first intermediate host, or restricting access to the lakes or streams where the dragonflies are found have been suggested (B24, B32.33.w33).
Population Control Measures WATERFOWL --
Isolation, Quarantine and Screening WATERFOWL --
Related Techniques
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