Doctor of Philosophy (PhD): Recent submissions

Now showing items 301-320 of 373

Bioecology of Thrips in French Bean Growing : Agroecosystems in Kenya.

Gitonga, Linus Muthuri (Jomo Kenyatta University of Agriculture and Technology, 2012)

Studies on the bioecology of thrips on French beans were carried out at Machakos, Kaguru and JKUAT. The general objectives of this study were twofold, namely to study the biology and population dynamics of thrips on French ...
The role of arthropod vectors in the transmission of lumpy skin disease in cattle

Misiani, Eunice Atieno Gai (Kenyatta University, 2004)

Lumpy skin disease (LSD) is an economically crippling disease of cattle with epizootic occurrence particularly after the onset of the rainy season. Biting arthropods have been implicated as vectors of lumpy skin disease ...
Studies on the cellular and humoral immune responses of the tropical bont tick Amblyomma varibgatum and the brown ear tick rhipicephalus appendiculatus against pathogens and parasitoids

Sekouba, Bengaly (Ahmadu Bello University, Zaria, 1996)

Amblyomma variegatum and Rhipicephalus appendiculatus are pests of domestic and to a certain extend wild animals. While feeding they transmit important diseases, among which are cowdriosis and East coast fever. It is ...
Patterns of relationship between Banana (Musa spp.) types and the Banana Weevil, Cosmopolites Sordidus (Germar) (Coleoptera: Curculionidae)

Sumani, Alfred Joseph (University of Zambia, 2012)

Banana (Musa spp.) is an important food crop of the humid tropical lowland areas of the world. Banana production is beset by several problems, related to crop husbandry, selection of planting material, soils, diseases, and ...
Adaptation of Trypanosoma (NANNOMONAS) Congolense broden 1904 types to different hosts and transmission by Glossina species

Masaninga, Freddie (University of Zambia, 2012)

The influence of host bLood on midgut infection, maturation rates in Glossina species, transmission and virulence to mice of Trypanosoma congolense DNA types was investigated. The study was also coiKiucted to identify an ...
Susceptibility of tsetse (Glossina species) to trypanosome infection in relation to midgut trypsin, trypsin-like enzymes and other molecules

Kongoro, Jedida A (Kenyatta University, 2012)

Post-feeding midgut trypsin levels and abilities of midgut homogenates to transform parasites were compared in Glossina morsitans morsitans, G. longipennis and G. fuscipes fuscipes. Peak midgut enzyme levels in the different ...
Trapping studies on Glossina longipennis cortie at Nguruman, South Western Kenya

Kyorku, Charles Antierme (University of Ghana, 1989)

Studies have been carried out at Nguruman, south-western Kenya, on Glossina longipennis Corti, a little known member of the fusca group of Glossina. The first objective was to develop an efficient trap suitable for both ...
Cloning and sequence analysis of a novel bacillus thuringiensis gene encoding delta endotoxin active against tsetse (Glossina Morsitans) and stemborer (Chilo Partellus)

Orony-Omolo, Edward Enos (University of Nairobi, 1996)

Local isolate of B. thuringiensis, designated L1-2 (Bacillus thuringiensis L1-2) was found to be toxic to adult tsetse, Glossina morsitans morsitans and fourth instar larvae of the stem-borer, Chilo partellus in bioassays. ...
Parasitization of Selected African Stemborers by Cotesia Flavipes Cameron and Cotesia Sesamiae (Cameron) (Hymenoptera:Braconidae) with Emphasis on Host Selection and Host Suitability

Adelejosee, Ngi-Song (University of Ghana, Legon, 1995)

Chilo partellus (Swinhoe) is a major pest of maize and sorghum in East Africa and indigenous natural enemies have been unable to maintain the pest population at a level acceptable to farmers. In Kenya, a classical biological ...
Infestations of phesolous vulgaris by beanfly ophiomia spp.(Diptera;Acromizidae) and its management by cultural practices

Joseph, Sibomana kayitare (University of Ghana, 1993)

Cultural practices as management strategy for beanfly control were examined over four cropping seasons in 1991 and 1992 under farmers developed field conditions at Oyugis , in H o m a B a y District of W e s t e r n ...
Ecological and Behavioural Studies of Mosquitoes in Mwea Tebere Irrigation Scheme, Kirinya District, Kenya with special reference to Anopheles Arabensis (Diptera : Culicidae)

Beth, Awour Rapuoda (Kenyatta University, 1995)

During this investigation which took place between April 1989 and February 1991, an attempt was made to determine the impact of rice irrigation practices on 1) mosquito species diversity and their relative population ...
Ecology and vectorial capacity of glossina fuscipes fuscipes newstead 1910 on Rusinga Island and along the shores of Lake Victoria, Kenya

Mwangelwa, Mwangelwa Inambao (University of Zambia, 1990)

Studies were carried out on Rusinga Island and the mainland in the Mbita Division of South Nyanza District, Kenya, from November 1987 to December 1989 to determine the distribution and die! activity patterns,population ...
Induction of immunity in sheep to rhipicephalus appendicutus (Newmann, 1901) antigens

Wishitemi, Lisamula Bob (Kenyatta University, 1985)

Immune resistance to infestation by an ixodid tick, Rhipicephalus appendiculatus, the vector of the African cattle disease, East Coast Fever was induced in sheep by immunisation with tick extracts. Six groups of four sheep ...
Host resistance to tick infestations in two breeds of goats, using the tick rhipicephalus appendiculatus neumann (the ’brown ear" tick)

Charles, Bagwasi Maranga (University of Nairobi, 1983)

The objectives of this study were to observe and ocmpare the levels of any innate resistance and development of any acquired resistance to Fhipicephalus apoendiculatus ticks in two breeds of goats, viz. the Local East ...
Pupal ecology and role of predators and parasitoids in natural population regulation of glossina pallidipes austen (diptera : glossinidae) at Nguruman, Kenya.

Delphina, Aba Adabie (University of Ghana, 1987)

A two-year programme was carried out at Nguruman in the Kajiado District of the Rift Valley Province of Kenya, to identify the characteristics of larviposition sites, quantify pupal mortality rates, determine predators and ...
Studies on Desmodium Species for the Allelochemicals involved in Striga suppression

Guchu, Salome Muthoni (University of Nairobi, 2007)

The fodder legumes Desmodium uncinatum and D. intortum suppress the growth of Striga hermonthica (witch-weed) via an allelopathic mechanism that involves Striga germination stimulants and post-germination growth inhibitors. ...
Experimental evaluation of entomopathogenic fungi for the biological control of philebotomine sand flies (diptera psychodidae)

Ngumbi, Philip M (University of Nairobi, 2012)

The leishmaniases are some of the WHO's neglected tropical diseases which pose threat to human life in both the New and Old World. They are mostly transmitted through the bite of infected sand flies. The disease affects ...
Management of Wild Pollinator Services in Cocoa (Theobroma Cacao L) Production Systems in Ghana

Frimpong, Eric Anim (University of Cape Coast, 2009)

Studies to evaluate farmer knowledge of cocoa pollination, farm practices and their impact on cocoa pollination were conducted through questionnaires and field experiments in three major cocoa growing areas in Ghana from ...
Identification And Tissue Localization Of Olfactory Proteins In The Antenna And Head Of Glossina Species

Ger Nyanjom, Steven Reuben (Jomo Kenyatta University of Agriculture and Technology (JKUAT), 2010)

tsetse flies use olfaction in search for food, mates and larviposition sites. olfactory proteins (odorant binding proteins (obps), pheromone binding proteins (pbps), chemosensory protein (csps), odorant degrading enzymes ...
Modelling The Impact Of Climate Change On The Maize Stem Borer Communities And Their Main Natural Enemies Along Altitudinal Gradients In East Africa

Mwalusepo, Sizah (University of Dar es Salaam, 2015)

Maize is one of the most important staple foods in East Africa. In spite of its importance, maize production in the region faces increased risk of being attacked by maize stem borers due to climate changes. This thesis ...

Now showing items 301-320 of 373

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