Publications
Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
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ultrastructural studies of the spermatogenesis and spermiogenesis of the caryophyllidean cestode wenyonia virilis (woodland, 1923). | spermatogenesis and spermiogenesis of the monozoic caryophyllidean cestode wenyonia virilis (woodland, 1923), an intestinal parasite of synodontis schall (pisces: siluridae), have been investigated by means of transmission electron microscopy for the first time in egypt. spermatogenesis is of a rosette type; each spermatogonium undergoes four mitotic and two meiotic divisions resulting in the formation of sixty four spermatids. these spermatids undergo spermiogenesis and transform into mature sp ... | 2008 | 18568447 |
discordant population histories of host and its parasite: a role for ecological permeability of extreme environment? | biogeographical and ecological barriers strongly affect the course of micro-evolutionary processes in free living organisms. here we assess the impact of a recently emerged barrier on populations of limnic fauna. genetic diversity and population structure in a host-parasite system (wenyonia virilis tapeworm, synodontis schall catfish) are analyzed in the recently divided turkana and nile basins. the two basins, were repeatedly connected during the holocene wet/dry climatic oscillations, followin ... | 2017 | 28394904 |