Canis ISSN: 2398-2942

Prototheca wicherhamii

Synonym(s): P. wicherhamii

Contributor(s): Vetstream Ltd

Introduction

Classification

Taxonomy

  • Algae.

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Clinical Effects

Epidemiology

Habitat

  • Widespread in nature; raw and untreated sewage, animal waste.

Lifecycle

  • Multiplies by endosporulation in host tissues and the environment.

Transmission

  • By ingestion, percutaneously or by intramammary injection in dairy cows.

Pathological effects

  • Immunodeficiency in the host animal may be a predisposing factor.
  • Tissue reactions are pyogranulomatous.
  • Bovine: chronic progressive mastitis occurs.
  • Canine: disease is usually disseminated and accompanied by hemorrhagic diarrhea, ocular lesions.
  • Feline and human: disease is cutaneous.

Control

Control via animal

  • In dairy cows the affected animals are a danger to other cows and should be culled immediately.
  • Treatment of other animal species is not successful.

Control via chemotherapies

  • Not successful in animals (amphotericin B and ketoconazole are used in humans).

Diagnosis

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Further Reading

Publications

Refereed papers

  • Recent references from VetMedResource and PubMed.
  • Ginel P J et al( 1997) Cutaneous protothecosis in a dog. Vet Rec 140(25) 651-653 PubMed.
  • Blogg J R and Sykes J E (1995) Sudden blindness associated with protothecosis in a dog. Australian Vet J 72(4) 147-149.
  • Thomas J B and Preston N (1990) Generalised protothecosis in a collie dog. Australian Vet J 67(1) 25-27.
  • Rakich P M, and Latimer K S (1984) Altered immune function in a dog with disseminated protothecosis. JAVMA 185(6) 681-683.

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