Browsing PHD-Department of Zoologial Sciences by Title
Now showing items 1-20 of 101
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Anopheles larval productivity and diversity in Mwea irrigation scheme, Kirinyaga district, Kenya
(2011-11-08)The use of irrigation to flood agricultural land during rice cultivation has over the years been associated with an increase in the number of disease vectors and corresponding increase in health burden due to malaria and ... -
Anthropogenic Impacts on Distribution and Abundance of Mountain Catfish (Amphilias Uranoscopus, Pfeffer, 1889) and Other Fishes, in the Sagana and Thego Streams, Nyeri, Kenya
(Kenyatta University, 2019-04)The clearance of forest for agriculture, settlement and grazing has had some of the most widespread human impacts on natural ecosystems globally. In Kenya large tracks of indigenous forests continue to be cleared to give ... -
Antiretroviral resistance and genetic diversity of human immunodeficiency virus among antenatal clinic respondents on nevirapine from North-Rift Kenya
(2011-07-11)Mother-to-child transmission (MTCT) of HIV-1 is responsible for infection of hundreds of thousands of infants every year. It is estimated that 600,000 newborns are infected yearly worldwide, with MTCT accounting for 90% ... -
An assesment of the use of botanical extracts and pheromes for the off-host and on-host control of amblyomma variegatum tick
(2012-01-12)The livestock tropical bont tick, Amblyomma variegatum Fabricius, is a pest of major economic importance in Africa where it is the vector of Cowdria ruminantium that causes Headwater, disease in cattle. Its control has ... -
Assessment by performance attributes of indigenous egg parasitoids (hymenoptera: trichogrammatidae for biocontrol of african bollworm (helicoverpa armigera) in Kenya
(Kenyatta University, 2004-08)Trichogrammatid egg parasitoids are used extensively for the control of several lepidopteran pests in many areas of the world. They ar~he most promising biological control agents for inundative releases against the African ... -
Assessment of Mangrove Phenology and the Role of Insect Pollinators in Fruit Production at Nyeke and Michamvi Mangrove Forests, Zanzibar
(Kenyatta University, 2016-05)Mangrove forests are evergreen estuarine and open systems which receive nutrients, fresh water and sediments from terrestrial environments. They vary both in their salinity tolerance and the degree to which salinity may ... -
Behavioural responses of rhipicephalus appendiculatus neumann 1901 and rhipicephalus evertsi, neumann 1987 (Acari: ixodidae) to host and non-host semiochemicals
(2012-05-02)On-host observations and laboratory behavioral assays were undertaken to investigate the role played by semiochemicals in the location of feeding sites by unfed adults of Rhipicephalus appendiculatus Neumann and Rhipicephalus ... -
Biodiversity of wild silkmoths (lepidoptera) and their potential for silk production in East Africa
(2012-04-11)Wild silk production is a unique eco-friendly agro-practice with the potential for environmental amelioration, employment and income generation. The present utilisation of wild silkmoths hardly accounts for 5% of the rich ... -
Bioecology of the new invasive fruit fly Bactrocera invadens (Diptera:Tephritidae) in Kenya and its interaction with indigenous mango-infesting fruit fly species
(2011-07-11)Bactrocera invadens Drew, Tsuruta & White (Diptera: Tephritidae), an alien invasive fruit fly species of Asian origin was first detected in Kenya in 2003. This pest has rapidly spread across sub-Saharan Africa and is ... -
Breeding of the honey bee (apis mellifera l.) and its potential for royal jelly production in Kenya
(Kenyatta University, 2004-07)Royal jelly is a creamy, milky white, strongly acidic and highly nitrogenous substance secreted by the hypopharyngeal and mandibular glands of worker honey bees at the ages of 5 - 15 days of age. The jelly is fed to queens ... -
Cellular immune responses in susceptible and resistant schistosomiasis patients co-infected with HIV-1 in Kisumu District, Kenya
(2012-01-05)This study aimed at dissecting immune mechanisms of resistance/susceptibility in schistosomiasis in a well-characterized cohort of hyper exposed adults with a high prevalence of HIV-1. The impact schistosome infections may ... -
Characterisation of placental malaria in olive baboons (pappio anubis) infected with plasmodium knowlesi H strain
(2011-07-11)Pregnant women have increased susceptibility to malaria infection. In these women, malaria parasites are frequently found sequestered in the placental intervillous spaces, a condition referred to as placental malaria (PM). ... -
Characterization and Control of Pathogenic Parasites in Nile Tilapia (Oreochromis Niloticus Linnaeus 1758) in Fish-farming Systems in Bungoma County, Kenya
(Kenyatta University, 2020)In Kenya, fish farming has been expanding in recent years, with Government support through financial and input subsidies to small scale farmers. The sub sector generates a variety of benefits such as food and nutrition ... -
Characterization of cytotoxic tlymphocyte responses to pre-erythrocytic stage candidate vaccine antigens in Kenyans naturally exposed to plasmodium falciparum malaria
(2012-02-13)One of the major limitations in the control of malaria either through vaccine development of use of insecticide-treated bed nets (ITBN) has been the lack of in vitro protection correlates and understanding of what constitutes ... -
Circulatory Cytokines and Hematological Profiles as Biomarkers of HIV and AIDS Progression
(Kenyatta University, 2019)Cytokines are polypeptides that have a fundamental role in communication within the immune system and in allowing the immune system and host tissue cells to exchange information. They play a central role in the pathogenesis ... -
Comparative evaluation of certain aspects of the biology of cotesia flavipes and cotesia sesamiae (hymenoptera: braconidae) for the management of chilo partellus (lepidoptera:pyralidae) in Kenya
(2012-04-11)A comparative study was conducted on two gregarious larval endoparasitoids of lepidopteran stemborers, Cotesia flavipes Cameron and Cotesia sesamiae (Cameron) (Hymenoptea: Braconidae). The first parasitoid was imported ... -
Comparative studies on the adult dispersal behaviour of busseola fusca (fuller) (Lepidoptera:Noctuidae) and chilo partellus swinhoe (lepidoptera:pyralidae)
(2012-04-04)Two oil soluble dyes, Calco Red N-1700 and Sudan Blau-670 were added to the artificial diet of Chilo partellus and Busseola fusca. The two dyes effectively marked the larvae, adults, eggs and first stage F1 larvae. The ... -
The conflict between modern and traditional parenting behaviours as perceived by students in some selected secondary schools in Nairobi province: counseling implications
(2011-11-08)This study was undertaken to examine and analyze the impact of westernizing influences on the parenting behaviours of modern Kenyan parents. This analysis was conducted, not by approaching these parents directly, but by ... -
Development and application of genetic markers linked to a QTL controlling resistance to trypanosomosis on bovine chromosome 7
(2012-01-04)Tsetse-transmitted trypanosomosis poses severe constraints to livestock productivity in sub-Saharan Africa, affecting large areas of the continent that hold the greatest potential for agricultural development. Greater ... -
Development and use of parasite lactate dehydrogenase assay for research, diagnosis and screening of antimalarial drugs in Kenya
(2012-04-04)Plasmodium falciparum malaria has routinely been diagnosed using thick smear microscopy, a procedure that has been difficult to standardize because of different levels of technician expertise and quality of reagents in ...
