Search Results - "Pieterse, G.M."

Histological changes in the liver of Oreochromis mossambicus (Cichlidae) after exposure to cadmium and zinc by van Dyk, J.C., Pieterse, G.M., van Vuren, J.H.J.

“…The toxic effects, of two heavy metals, cadmium (Cd) and zinc (Zn), on the histology of the liver of the southern African freshwater fish Oreochromis…”
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Intersex in feral indigenous freshwater Oreochromis mossambicus, from various parts in the Luvuvhu River, Limpopo Province, South Africa by Barnhoorn, I.E.J., van Dyk, J.C., Pieterse, G.M., Bornman, M.S.

“…This study reports on intersex in Oreochromis mossambicus, an indigenous fish species inhabiting most aquatic systems throughout South Africa (SA). Male fish…”
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Characterization of epididymal spermatozoa motility rate, morphology and longevity of springbok ( Antidorcas marsupialis), impala ( Aepyceros melampus) and blesbok ( Damaliscus dorcus phillipsi): Pre- and post-cryopreservation in South Africa by Chatiza, F.P, Pieterse, G.M, Bartels, P, Nedambale, T.L

“…Cryopreservation of antelope epididymal spermatozoa could play a vital role in future breeding by developing a successful protocol for cryo-conserving them…”
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histo-morphological study of the testis of the sharptooth catfish (Clarias gariepinus) as reference for future toxicological assessments by van Dyk, J.C, Pieterse, G.M

“…The sharptooth catfish (Clarias gariepinus) has recently been shown to be a useful indicator species of oestrogen polluted waters in South Africa ( Barnhoorn…”
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Histopathological alterations in the liver of the sharptooth catfish Clarias gariepinus from polluted aquatic systems in South Africa by Marchand, M.J, van Dyk, J.C, Pieterse, G.M, Barnhoorn, I.E.J, Bornman, M.S

“…There is a need for sensitive bio-monitoring tools in toxicant impact assessment to indicate the effect of toxicants on fish health in polluted aquatic…”
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Preliminary results on sperm motility and testicular histology of two feral fish species, Oreochromis mossambicus and Clarias gariepinus, from a currently DDT-sprayed area, South Africa by Marchand, M.J, Pieterse, G.M, Barnhoorn, I.E.J

“…The effects of DDT and its metabolites on the reproductive health of two fish species (Clarias gariepinus and Oreochromis mossambicus) were studied using the…”
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Sperm motility and testicular histology as reproductive indicators of fish health of two feral fish species from a currently DDT sprayed area, South Africa by Marchand, M.J, Pieterse, G.M, Barnhoorn, I.E.J

“…Sperm motility and testicular histology were studied as reproductive indicators of the reproductive capacity for two wild, indigenous fish species (Oreochromis…”
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Histological alterations in the testes and ovaries of the sharptooth catfish (Clarias gariepinus) from an urban nature reserve in South Africa by Pieterse, G.M, Marchand, M.J, van Dyk, J.C, Barnhoorn, I.E.J

“…Fish from two urban impoundments known to be polluted will have a higher incidence of gonadal histological alterations compared to fish grom a laboratory-bred…”
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