Morphological differentiation among three Thelazia species (Nematoda: Thelaziidae) by scanning electron microscopy

Soraya Naem
June 2007
Parasitology Research;Jun2007, Vol. 101 Issue 1, p145
Academic Journal
Abstract  Thelaziasis is an ocular infection of several mammals caused by nematodes of the genus Thelazia (Spirurida, Thelaziidae). The adults live in the lachrymal ducts and conjunctival sacs of infected animals, and transmission occurs by means of different species of muscids. T. rhodesi, T. skrjabini, and T. gulosa affect mainly cattle, inducing conjunctivitis, keratitis, and ocular discharge. This article describes the morphological features of adult T. rhodesi, T. skrjabini, and T. gulosa by scanning electron microscopy and highlights the most relevant differences for their identification.


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