Abstract Fish cage culture has rapidly grown throughout Lake Victoria's shores, with Nile tilapia ( Oreochromis niloticus ) being the primarily cultured species. However, there is inadequate information on its economic viability. The study investigated feasibility of fish farming system in Victoria, Kenya, by evaluating relationship between cost inputs and revenue from sales analysing overall p...

We propose a new mechanism for diversification of male nuptial-colour patterns in the rapidly speciating cichlid fishes of Lake Victoria. Sympatric closely related species often display nuptial colours at opposite ends of the spectrum with males either blue or yellow to red. Colour polymorphisms within single populations are common too. We propose that competition between males for breeding sit...

Mineral composition of dry Tamarindus indica LINN pulp and seeds was evaluated on samples collected from three different agro-ecological zones of Uganda (Lake Victoria Crescent, and Eastern and West Nile). The objective of the study was to evaluate the mineral composition of T. indica pulp and seed samples from across Uganda's different agro-ecological zones and land use types. Separately groun...

Schistosoma kisumuensis n. sp. is described based on 6 adult males and 2 adult females collected from the circulatory system of 3 murid rodent species, Pelomys isseli, Mastomys natalensis, and Dasymys incomtus. Specimens were collected from a single location, Nyabera Swamp, in Kisumu, Kenya in the Lake Victoria Basin. This new species is morphologically similar to members of the S. haematobium ...

This study focused on variation in fish mercury (Hg) concentrations in 185 Nile perch (Lates niloticus) samples collected across four different habitat types in Lake Nabugabo, Uganda, a tropical lake located proximate to Lake Victoria. We quantified the stomach contents of Nile perch using the % index of relative importance, as well as, nitrogen and carbon isotopic concentrations to assess the ...

This paper discusses spatial patterns in small-scale fishing in Africa. It is located in Lake Victoria where since the 1990s a vibrant Nile perch fishing for overseas export developed. Focusing on a very small area in the Ugandan part of the lake, the paper uncovers a larger diversity in fishermen’s responses to the dynamic environment of the Nile perch sector than a widely adopted generic mode...

Evolutionary innovations, traits that give species access to previously unoccupied niches, may promote speciation and adaptive radiation. Here, we show that such innovations can also result in competitive inferiority and extinction. We present evidence that the modified pharyngeal jaws of cichlid fishes and several marine fish lineages, a classic example of evolutionary innovation, are not univ...

Abstract. Water hyacinth (Eichhornia crassipes) is an invasive hydro plant that invaded the waters of Lake Victoria and has since been spreading rapidly affecting socio-economic livelihood community around Lake. The weed's rapid spread due to various anthropogenic activities in surrounding environment among them being eutrophication lake waters.This study aims at using remote sensing applicatio...