Nile tilapia (Oreochromis niloticus L.) is the dominant of the introduced tilapiines in many East African lakes and has flourished in the presence of introduced Nile perch (Lates niloticus L.). We explored the hypothesis that O. niloticus exhibits increased omnivory in response to a decline in abundance of haplochromine cichlids. First, we quantified variation in habitat use and diet of O. nilo...

Abstract Lake Victoria is the second largest freshwater lake and tropical in world. The transboundary has fastest growing population its catchment, which can impact water sediment quality. To determine extent of anthropogenic effects on quality Ugandan part Victoria, contents binding behaviour trace elements were analysed, as well organic matter phosphorus different layers both deep coastal sed...

Steenstrupia Jelnes, J. E., F. W. Thiongó, N. J. S. Lwambo & J. H. Ouma. The Bulinus nasutus complex (Bulinus nasutus (Martens, 1879) and Bulinus productus Mandahl-Barth, 1960) (Gastropoda: Planorbidae) in the Lake Victoria area elucidated by enzyme-profile electrophoresis and natural infections with Schistosoma spp. (Trematoda: Schistosomatidae). – Steenstrupia 27 (2): 257–262. Copenhagen, Den...

Oogenesis begins when the stem cell (oogonium) transforms into leptotene oocytes at the initiation of meiosis. The cell now called an oocyte produces the cellular material needed to complete the pre-vitellogenic phase of development. These may include gene amplification and organelle production. In addition, this leads to the accumulation of nutrients, messenger RNAs (mRNA), precursors of DNA a...

1. Wetlands in the Lake Victoria basin serve as structural and hypoxic refugia for some native fishes against predation by introduced Nile perch (Lates niloticus); however, little is known about the fine-scale patterns of distribution and abundance of these refuge inhabitants. 2. This study sought to quantify wetland ecological gradients and determine where peaks in native fish abundance and ri...

This research article examines the significance of maritime security, as one most recent axioms international relations and diplomacy. It focuses on socioeconomic factors that contribute to insecurity along Lake Victoria's Homa Bay shores. In order determine outcome, a qualitative approach an exploratory design were used in unveiling problem under consideration. Individuals organizations/instit...

Paleoanthropologists have long argued that environmental pressures played a key role in human evolution. However, our understanding of how these pressures mediated the behavioral and biological diversity of early modern humans and their migration patterns within and out of Africa is limited by a lack of archaeological evidence associated with detailed paleoenvironmental data. Here, we present t...

Oogenesis begins when the stem cell (oogonium) transforms into leptotene oocytes at the initiation of meiosis. The cell now called an oocyte produces the cellular material needed to complete the pre-vitellogenic phase of development. These may include gene amplification and organelle production. In addition, this leads to the accumulation of nutrients, messenger RNAs (mRNA), precursors of DNA a...

Two new species of zooplanktivorous haplochromine cichlids from Lake Victoria, Tanzania, are described and illustrated. These species closely resemble each other. Their affinities to other zooplanktivorous haplochromines from Lake Victoria are discussed. Haplochromis argens sp. n., which featured under nicknames (mainly Haplochromis "argens") in more than 50 papers, was caught both in the Mwanz...

This study was carried out in order to investigate the spatial variation of algal toxin (microcystin) concentrations along the shoreline of Lake Victoria. A total of 16 nearshore stations differing in connectivity to the main lake basin were categorized as either closed bays (ratio of bay area to bay opening < 1) or open bays (ratio ≥ 1) and sampled during November and December 2009. Water samp...