Modifications to stream hydrologic regimes can have a profound influence on the dynamics
of their fish populations. Using hierarchical linear models, we examined the relations …

The estrone (E1) excreted through faeces and urine by livestock and humans are present in
the water bodies. Even at very low concentrations (0.1–1 ng/l) it poses threat to living …

Throughout the previous century, the production, use and, as a result, presence of chemicals
in the environment increased enormously. Consequently, humans and animals are exposed …

Environmental estrogens have the potential to considerably affect the reproduction and
development of aquatic vertebrates by interfering with the endocrine system. In addition to …

This study reports on intersex in Oreochromis mossambicus, an indigenous fish species
inhabiting most aquatic systems throughout South Africa (SA). Male fish were collected from …

A mathematical model is presented which combines genetic XX-female/XY-male sex
determination with environmental pressure for phenotypic sex reversal. This may occur …

Constructed wetland systems (CWS) have been used as a low cost bio-filtration system to
treat farm wastewater. While studies have shown that CWS are efficient in removing organic …

Contaminants causing sex-altering, endocrine disrupting-like (ED) effects, or otherwise
influencing reproduction, have been of growing concern to humans for more than 50 years …

We examined the effects of dietary methylmercury on the production of testosterone in and
the reproductive behavior of male fish. Juvenile fathead minnows (Pimephales promelas) …

Histopathological changes were identified in selected target organs from two freshwater fish
species, Clarias gariepinus and Oreochromis mossambicus, inhabiting the hyper-eutrophic …