Westerdykella spp

From Dog
Colony grown of Westerdykella on oatmeal agar with sea salts[1]

Westerdykella is a hardy saprophytic filamentous hyphal fungus from the family Sporomiaceae[2].

It is normally found in rotting vegetation and on coastal algal formation. Dogs are thought to be infected by contact with open sores[3][4].

Species which are pathogenic to dogs include:

  • Westerdykella reniformis

Clinically affected dogs are rarely reported but a case of chronic azotemia has been reported in a dog with renal pyuria and filamental hyphae found on urine culture[5]. The dog subsequently developed hyperphosphatemia and diskospondylitis.

Treatment with itraconazole, terbinafine, posaconazole and amphotericin B were unsuccesful and renal failure eventually ensued five months later.


  1. Ebead GA et al (2012) Westerdykella reniformis sp. nov., producing the antibiotic metabolites melinacidin IV and chetracin B. IMA Fungus 3(2):189-201
  2. Srivastava PK et al (2012) Stimulatory effects of arsenic-tolerant soil fungi on plant growth promotion and soil properties. Microbes Environ 27(4):477-482
  3. Clum FM (1955) A new genus in Aspergillaceae. Mycologia 47:899–901
  4. Stolk AC (1955) Emericellopsis minima sp. nov. and Westerdykella ornata gen. nov., sp. nov. Transactions of British Mycological Society 38:419–424
  5. Armentano RA et al (2013) Disseminated mycotic infection caused by Westerdykella species in a German Shepherd dog. J Am Vet Med Assoc 242(3):381-387