Dipetalonema spp

From Cow
Adult Dipetalonema

Dipetalonema spp are a relatively rare parasitic nematode transmitted by fleas and Musca spp flies[1] and cause skin disease in cattle[2].

Species of Dipetalonema have been recognized as parasitic of cattle:

  • Dipetalonema viteae[3]

Dipetalonema spp are a parasite of cattle which reside sin the subcutaneous tissue throughout cattle skin and causes chronic inflammation (bleeding spots) and sometimes nodule formation. Because of seasonal bleeding and the cutaneous nodules, severe infections of Dipetalonema spp have been reported to impair the productivity of working bullocks in India; however, the major importance of Parafilaria in beef-producing countries is damage to the subcutaneous tissues.

Diagnosis of infection is based on presenting clinical lesions on skin, and presence of larvated eggs and free microfilariae observed under light microscopy. ELISA for the detection of antibodies against Dipetalonema spp has been developed.

Treatment is usually effective with ivermectin given at 200 μg/kg as a single injection monthly for 4 treatments[4].

References

  1. Mustafa MB et al (1985) Adult worms of a 'Dipetalonema' sp. from the dermis of cattle in the Sudan. J Helminthol 59(4):361-362
  2. Merck Vet Manual
  3. Speiser F & Weiss N (1979) Comparative evaluation of 7 helminth antigens in the enzyme-linked immunosorbent assay (E.L.I.S.A.). Experientia 35(11):1512-1514
  4. Campbell WC (1982) Efficacy of the avermectins against filarial parasites: a short review. Vet Res Commun 5(3):251-262