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Acta Parasitologica, Vol.46, No. 2, 2001, 113-118
Mubarak Muhammad (1)*, Abed Gamal H. (2) - Morphopathological changes of the testicular tissue of Egyptian toad, Bufo regularis (Amphibia, Bufonidae) infected with Myxobolus sp. (Myxozoa, Myxobolidae)

(1) Department of Pathology, Faculty of Veterinary Medicine; (2) Department of Zoology, Faculty of Science; Assiut University, Assiut; Egypt
*Corresponding author: Fax: +20 088 333938.

A total of 200 adult male Egyptian toads (Bufo regularis) captured from Assiut locality (Upper Egypt), were surveyed for the testicular infection with Myxobolus sp. Ten toads (5%) showed various degrees of infectivity detected by means of light and electron microscopy. The significant pathological changes in the testis were observed. Plasmodia of Myxobolus sp. caused atrophy of the infected testicular tissue. The infection of the seminiferous tubules by the different parasitic stages induced necrobiotic changes in the tubular cells, which suggests the Myxobolus sp. is a pathogenic testicular parasite of the Egyptian toad, B. regularis.

KEY WORDS: Myxobolus sp., Myxozoa, toad, Amphibia, testes, morphopathology
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