Light and Electron Microscopic Study on Developmental Stages of Babesia canis within the Gut of the Tick Dermacentor reticulatus

Abstract
The initial developmental stages of B. canis within the gut of the vector tick, D. reticulatus, were studied by means of light microscopy and EM. Large quantities of varying spiky-rayed stages and a few ovoid stages without any protrusions were observed after lysis of the engorged canine erythrocytes. The transformation of spherical erythrocytic stages into spiky-rayed forms was initiated inside the intact erythrocytes. The significance of all developmental stages in a hypothetical life cycle of Babesia spp. is discussed.

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