Search

Now showing items 1-6 of 6

Changes in population characteristics and diet of Nile tilapia Oreochromis niloticus (L.) from Nyanza Gulf of Lake Victoria, Kenya: what are the management options?

Owuor, J.B. Okeyo; M. Muchiri; M. van der Knaap; I. G. Cowx (Tylor&Francis, 2007-11-26)

Length frequency data collected from 1998 to 2001 from commercial landings was used to estimate asymptotic length (L∞), growth coefficient (K), mortality (Z, F, M), growth performance index (φ ) and exploitation rate ...

Macroinvertebrate-based Index of biotic integrity (M-IBI) for monitoring the Nyando River, Lake Victoria Basin, Kenya

Okoth Raburu, Phillip; Owuor, J. B. Okeyo; Onderi Masese, Frank (Academic journal, 2009-12)

A macroinvertebrate-based Index of Biotic Integrity (M-IBI) was developed to monitor ecological integrity of the Nyando River and its tributaries. Macroinvertebrates were sampled with a scoop net between September and ...

Institutional pluralism, access and use of wetland resources in the Nyando Papyrus Wetland, Kenya

Nasongo, A. A Serena; Zaal, Fred; Dietz, Ton; Owuor, J. B. Okeyo (Academic journal, 2005)

Wetlands support livelihoods of communities living around them as in the Nyando Papyrus Wetland in Kenya. The Nyando Papyrus Wetlands provide multiple resources hence there are multiple uses and users who often overlap ...

Micronutrient Zinc Deficiency as a Possible Co-factor in the Transmission and Progression of HIV/AIDS in Kenya

Mbakaya, Charles; D Bulimo, Wallace; Jumba, Isaac; Nyambaka, Hudson Nyabuga (2004)

Thirty-four HIVIAIDS patients at various stages of disease progression volunteered to manage their ealth using a nutritional supplement that contained several micronutrients that included a 15 mg daily dose of elemental ...

Variations in the mosquito larvicidal activities of toxins from Bacillus thuringiensis ssp. israelensis

Otieno-Ayayo, Z. Ngalo; Zaritsky, Arieh; Wirth, Margaret C.; Manasherob, Robert; Khasdan, Vadim; Cahan, Rivka; Ben-Dov, Eitan (2008)

Comparing activities of purified toxins from Bacillus thuringiensis ssp. israelensis against larvae of seven mosquito species (vectors of tropical diseases) that belong to three genera, gleaned from the literature, disclosed ...

Enduring toxicity of transgenic Anabaena PCC 7120 expressing mosquito larvicidal genes from Bacillus thuringiensis ssp. israelensis

Otieno-Ayayo, Z. Ngalo; Manasherob, Robert; Miaskovsky, Rina; Ben-Dov, Eitan; Boussiba, Sammy; Zaritsky, Arieh (National Library of Medicine, 2003)

Persistence of biological control agents against mosquito larvae was tested under simulated field conditions. Mosquito larvicidal activity of transgenic Anabaena PCC 7120 expressing cry4Aa, cry11Aa and p20 from Bacillus ...