Browsing RP-Department of Zoological Sciences by Issue Date
Now showing items 1-20 of 262
-
Contribution of hot spring cyanobacteria to the mysterious deaths of Lesser Flamingos at Lake Bogoria, Kenya
(Oxford University Press, 200-03-01)Cyanobacterial mats at hot springs on the shore of the alkaline Lake Bogoria, Kenya, were investigated regarding species community and cyanobacterial toxin content. The hepatotoxins microcystin-LR, -RR, -LF and -YR, and ... -
Factors Affecting Stem Borer Parasitoid Species Diversity and Parasitism in Cultivated and Natural Habitats
(Entomological Society of America, 201)The effects of biotic and abiotic factors on stem borer parasitoid diversity, abundance, and parasitism were studied in cultivated and natural habitats in four agroecological zones in Kenya. Comparing habitat types, we ... -
Parasitization of Helicoverpa armigera (Lepidoptera: Noctuidae) by four Indigenous Trichogrammatid Species/Strains in a Mixed Cropping System of Tomato and Okra
(SCIENCEDOMAIN international, 201-02-21)Aims: Egg parasitoids, Trichogramma are recognised as natural enemies of many lepidoptera pests worldwide. In Kenya, a number of indigenous parasitoids species have been recovered. We evaluated the relative preference ... -
Some effects of mound-building termites on soils in Uganda
(Bioinfo Publications, 1976-09)Most large mounds in Uganda are built by termites of the genus Macrotermes. Except for those in valley bottoms they are composed of subsoil which is thought to be collected mainly from depths of 0.5 to 1.0 m, although the ... -
Histological observations on the changes in thyroid activity in the scincid lizard, Mabuya striata, during different phases of tail regeneration
(Zoological Society of Southern Africa, 1977)Measurements of the follicle cells of the thyroid during different phases of regeneration of the tail in the scincid lizard. Mabuya striata. indicate a decrease in thyroid activity during the wound-healing phase and an ... -
Effects of temperature on growth in the regenerating tail of the scincid lizard, Mabuya striata
(Zoological Society of Southern Africa, 1977)Experiments on effects of temperature on growth in the regenerating tail of Mabuya striata, artificially autotomized, suggest a faster rate of regeneration during hot weather than cold weather. limbs of newts and ... -
Changes in Fish Species Composition in Lake Naivasha, Kenya
(Kluwer Academic Publishers, 1979)The fish species composition in Lake Naivasha has been modified during recent years. Out of seven introduced and one indigenous species reported in 1962, only three introduced ones are found today. The elimination of species ... -
Reproductive Biology of Tilapia zillii (Gervais) in Lake Naivasha, Kenya
(Kluwer Academic Publishers, 1979)Tilapia zillii breeds all year round in the equatorial Lake Naivasha with slightly high breeding intensity during wet months (March, May and July–August). A sex ratio of 1 : 1.28 was found between males and females. The ... -
Bushmeat in Nigeria as a Natural Resource with Environmental Implications
(Cambridge University Press, 1983)The value of protein from wild animals (‘bushmeat’) in Nigeria was examined, especially with respect to the consumer market. Surveys were made of roadside sales, meat prices in markets, and bushmeat consumption by the ... -
A quantitative study of the life history of a fairy shrimp (branchiopoda: anostraca) in relation to the temporary nature of its habitat, a Kenyan rainpool
(Jstor, 1985)(1) Two cohorts of Streptocephalus vitreus (Brauer 1877) lived for 19 (short-rains cohort) and 32 days (long-rains cohort) in a temporary rainpool during two wet seasons in Kenya. On both occasions the pool dried up when ... -
Mima mound microtopography and vegetation pattern in Kenyan savannas
(Cambridge University Press, 1985-02)Earth mounds are important determinants of vegetation pattern in savannas, acting as foci for establishment of woody plants. In the Kenya highlands, mounds formerly attributed to termites have recently been found to be ... -
A population study of small rodents in a dry sub-humid grassland in Kenya
(Cambridge University Press, 1985-08)Estimates were made of rodent longevity, population biomass and production in a dry sub-humid grassland area in Kenya, The results were based on a live-trapping study made over a 27-month period. During this time fourteen ... -
Studies of birds in a semi-arid area of Kenya. III The use of ‘Timed Species-counts’ for studying regional avifaunas
(Cambridge University Press, 1986-08)‘Times Species-counts’ are a simple method of comparing the avifaunas of extensive areas by sampling representative habitats. The method has been evaluated in south central Kenya but could be applied to most terrestrial ... -
Role of Sorghum Extract in Eliciting Oviposition on a Nonhost by the Sorghum Shootfly, Atherigona soccata Rondani (Diptera: Muscidae)
(Entomological Society of America, 1987-08)The role of chemicals of sorghum plants in stimulating oviposition by the sorghum shootfly, Atherigona soccata Rondani, was investigated using the acetone extract of the susceptible sorghum CSH-1, which elicits high ... -
Volatile components of banana pseudostem of a cultivar susceptible to the banana weevil
(Elsevier Ltd, 1991)Volatiles from banana (‘githumo’'cultivar) pseudostem were trapped using porapak S. The trapped volatiles were desorbed from porapak columns by elution with dichloromethane and analysed using GC and GC-MS. The volatile ... -
Feeding responses ofChilo partellus (Swinhoe) (Lepidoptera: Pyralidae) larvae to sorghum plant phenolics and their analogs
(Elsevier Ltd, 1991-01)Phagostimulatory responses of third-instar larvae ofChilo Partellus to phenolic components identified in an ethyl acetate extract of the leaf whorls of 3-week-old plants ofSorghum bicolor cultivar IS 18363 were studied in ... -
The effects of experimental Trypanosoma (Trypanozoon) (brucei) evansi infection on the fertility of male goats.
(Veterinary Research Communications, 1991-02)The effects on the fertility of small East African male goats of intravenous infection with Trypanosoma (t) (b) evansi were studied. Six infected bucks developed erratic, low but persistent parasitaemia, the packed cell ... -
Densities of Prodiamesa olivacea (Neigen) (Diptera: Chironomidae) in a Second Order Stream, the Laan (Belgium): Relation to River Dynamics
(Kluwer Academic Publishers, 1992)Larval densities ofProdiamesa olivacea were examined in the Laan stream for one year and matched against stream discharge and coarse organic detritus (COD) content of the sediments. The sediment grain size partitioning for ... -
Pathogenesis of Trypanosoma (brucei) evansi in small east African goats.
(Research in Veterinary Science, 1993-05)Trypanosoma evansi is the cause of surra, a camel disease which is the most important single cause of economic losses in camel rearing areas. Sheep and goats herded with camels are the most likely hosts for T evansi. Upon ... -
The Effect of Intercropping on Relative Resistance and Susceptibility of Cowpea Cultivars to Maruca Testulalis Geyer when in mono and when Intercropped with Maize
(Cambridge University Press, 1993-06)Field studies to investigate the effect of intercropping on the relative resistance and susceptibility of cowpea cultivars to Maruca testulalis impure stands and intercropped with maize, were conducted at the International ...
