Theses & Dissertations: Recent submissions

Now showing items 81-100 of 698

Combination of ‘push-pull’ and Netting Technology for Management of Cowpea Pests (Megalurothrips Sjostedti Trybom and Aphis Craccivora Koch) in Kenya

Diabate, Seydou (Jomo Kenyatta University of Agriculture and Technology, 2019)

Vegetable production is increasing in order to feed the growing urban populations in subSaharan Africa. Net houses are one possible solution to increase the quality and yield of cowpea, an important leafy vegetable, and ...
Development of Mycopesticide for the Management of Sorghum Chafer, Pachnoda Interrupta (Olivier) (Coleoptera: Scarabaeidae) in Ethiopia

Habtegebriel Belay (Addis Ababa University School of Graduate Studies, 2015)

Pachnoda interrupta (Olivier) (Coleoptera: Scarabaeidae) is a damaging pest of sorghum,other cereals and horticultural crops such as maize, wheat, barley, bananas, guava etc. in Africa which at times results in complete ...
Endophytic activity of Beauveria bassiana in tomato and its efficacy against red spider mites (Tetranychus evansi

Anaye, Omukoko Caroline (Jomo Kenyatta University of Agriculture and Technology, 2019)

The tomato red spider mite, Tetranychus evansi Baker and Pritchard, is an important pest of tomatoes in Kenya. Acaricides commonly used in excessive amounts by farmers have led to cases of resistance as well as widespread ...
The ecology of Glossina fuscipes fuscipes (Diptera: Glossinidae) and its responses to 4-Methylguaiacol and specific compounds in waterbuck odour

Njelembo, Joshua Mbewe (UNIVERSTY OF PRETORIA, 2018)

Tsetse flies (Glossinidae) are important biological vectors of trypanosomes, the protozoan parasites that cause Nagana and sleeping sickness. They are distinguished into three taxonomic groups; morsitans, palpalis and ...
DE LA REPULSION CHEZ LES INSECTES - Cas d’étude du moustique Anopheles gambiae et de la mouche blanche Bemisia tabaci -

DELETRE, EMILIE (De l’école doctorale SIBAGHE, 2014)

D’après la FAO, il faudra nourrir 9 milliards de personnes en 2050 ce qui équivaudrait à augmenter de 70% la production actuelle. Une manière simple d’augmenter la production serait de limiter les pertes de rendement et ...
Biodiversity and Ecosystem Services: Pollination, Biological Control, and Nature Conservation in Agricultural Landscapes

Gorm, Shackelford (The University of Leeds School of Biology, 2014)

Agriculture has done more damage to nature than any other human activity, and yet food production could need to be doubled by the middle of this century. As agricultural land is expanded and intensified, critical thresholds ...
Ecosystem services and disservices in small-scale tropical agriculture

Steward, Peter Richard (The University of Leeds School of Biology, 2014)

Small-scale farmlands are dynamic systems crucial to the food-security and livelihoods of more than two billion people and there is political pressure in many developing nations to consolidate and expand small farms into ...
Olfactory preferences of gravid female stable flies, Stomoxys calcitrans L. (Diptera: Muscidae), and their fitness consequences

Steve Soh Baleba, Bernard (UNIVERSITY OF PRETORIA, 2019)

Oviposition decisions are a prominent example of behaviour directly affecting the fitness,abundance, distribution, and population dynamics of holometabolous insects. Due to eggs being immobile and adult insects often not ...
Development of Semiochemical-based Strategies for the Management of Antestia bug, Antestiopsis Thunbergii (heteroptera: pentatomidae)

Nyambura Njihia, Teresiah (Jomo Kenyatta University of Agriculture and Technology, 2019)

Antestia bug Antestiopsis thunbergii (Gmelin) is a key insect pest of Arabica coffee associated with high losses in terms of quality, yield and export market of produce from the African region. Although the pest prefer ...
Development of entomopathogenic fungi as biopesticides for the management of Cowpea Aphid, Aphis craccivora Koch

Mweke, Allan Ndua (Humboldt-Universität zu Berlin, 2019)

Cowpea (Vigna unguiculata L. Walp) is an important African indigenous vegetable in the tropics where it is considered as a key source of nutrients and income for small-holder farmers.The crop is drought tolerant and does ...
Growth Performance and Carcass Characteristics of the African Catfish (Clarias Gariepinus) Reared on Diets Containing Black Soldier fly (hermetia illucens) Larvae Meal

Njoroge Maina, Anderson (2020)

Fish feed protein ingredients are the most expensive and often unavailable in subSaharan Africa especially in commercial aquaculture systems. The major fish feed protein ingredient in fish farming in Kenya is fishmeal (FM) ...
Lectin Expression Associated with Plasmodium Infections in Anopheles

Achieng', Dolphine (University of Nairobi, 2003)

The variation of the mannose-binding protein (MBP) gene and the role of lectins during infection in mosquitoes were investigated using genomic DNA approach based on sequencing of the gene and the levels of its expression ...
Study on the Biology and Some Ecological Aspects of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) in Relation to its Altitudinal Expansion

Abamo, Amanuel Tamiru (Addis Ababa University, 2005)

Survey was carried out during 2004 main cropping season to investigate the abundance and distribution of stemborers, with emphasis on C. partellus in central and eastern Ethiopia. Three species of stemborers, Chilo partellus ...
Relationship between virulence and repellency of Metarhizium anisopliae and Beauveria bassiana towards Macrotermes michaelseni and chemical identification of the mediating signals

Mburu, David M. (Jomo Kenyatta University of Agriculture and Technology, 2009)

It is not well understood how termites survive in hemiedaphic habitats with diverse array of potentially infective fungi. In the present study, it was initially found that Macrotermes michaelseni detected a virulent isolate ...
Bacterial diversity in the Interstinal Tracts of the Fungus-Cultivating Termites Macrotermes michaelseni (Sjostedt) and Odontotermes somaliensis (Sjostedt

Mackenzi, Lucy M. (Jomo Kenyatta University of Agriculture and Technology, 2005)

Termites are an important group of insects that harbor a complex community of gut microbes, which contribute to digestion, termite nutrition and gas (methane, carbon dioxide and hydrogen) emission. The abundance of ...
Oviposition and Feeding Allelochemicals for Chilo partellus from Sorghum and Maize Cultivars; Bioassay, Isolation and Characterization

Bogita, Richard K. (University of Nairobi, 1994)

A study was carried out to isolate and identify the chemicals from sorghum and maize that determine the oviposition and feeding responses, respectively, of the moth and larvae of Chilo partellus a serious pest of these ...
Interaction between Pheromons and Hormones in Phase Dynamics of the Desert gregaria (Forskal)

Tawfik, Amer I. (Assiut University, 1995)
Studies on the nymphal aggregation pheromone of Malagasy Migratory Locust, Locusta migratoria capito (Saussure, 1884) and its effects on adult maturation

Razafindranaiv, Victor (Jomo Kenyatta University of Agriculture and Technology, 2010)

The Malagasy migratory locust, Locusta migratoria capito (Saussure, 1884), is the most destructive pest in the Malagasy agricultural production system. The recent plague between 1996 and 2000 during which economic losses ...
Changes in Lipophorin Structure and Function during Phase Transition in Schistocerca gregaria (Forskal) (Orthoptera: Acrididae)

Ogoyi, Dorington O. (University of Nairobi, 1993)

The desert locust, Schistocerca gregaria is a major agricultural pest especially in the gregarious phase when it can cover an infestation area of approximate!~ 20% of the total land mass. The solitary phase on the other ...
Odour detection in the desert locust, Schistocerca gregaria: antennal structure and function

Ochieng', Samuel A. (University of Lund, 1997)

Insects are among the most successful organisms in the animal Kingdom. Their capacity to survive and reproduce depends greatly on their ability to identify and respond selectively to cues from a heterogeneous environment. ...

Now showing items 81-100 of 698

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