Publications

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Submitted
MWANGI EN, KAAYA GP, ESSUMAN S, KIMONDO MG. "Parasitism of Amblyomma variegatum by a Hymenopteran Parasitoid in the Laboratory, and Some Aspects of Its Basic Biology.". Submitted. AbstractParasitism of Amblyomma variegatum by a Hymenopteran Parasitoid in the Laboratory, and Some Aspects of Its Basic Biology

Unfed Amblyomma variegatum F. nymphs were experimentally infected in the laboratory with a hymenopteran parasitoid, Ixodiphagus hookeri (Howard). The parasitoid was originally obtained from ticks collected from cattle in the Trans-Mara area of Kenya where it naturally infects 50% of A. variegatum nymphs. In the field, nymphs collected from cattle were found to be infected, but not those collected from grass. The optimum temperature for emergence of parasitoids from the nymphs in the laboratory was 28°C, but emerged parasitoids were more active and survived longer at 22°C. There was a higher proportion of parasitoid nonemergence from laboratory-infected than from the field-infected nymphs. This study is the first record of infection of A. variegatum in the laboratory with a parasitoid. Possibilities of mass rearing and use of the parasitoid as a biocontrol agent for ticks are discussed.

2013
TURNER1 WENDYC, IMOLOGHOME PEACE, HAVARUA ZEPEE, KAAYA GODWINP, MFUNE JOHNKE, MPOFU IRVINDT, GETZ1 WAYNEM. "Soil ingestion, nutrition and the seasonality of anthrax in herbivores of Etosha National Park. ." Ecosphere. 2013;4(1):1-19.
2012
KAAYA G.P., KADHILA-MUANDINGI, P.N., LOTFY HR, MSHIGENI K. "Incorporation of seaweed in mushroom cultivation substrates and mushroom iodization." . African Journal of Agricultural Research. 2012;7(25):3673-3676.
SHILANGALE RP, DI GIANNATALE E, CHIMWAMUROMBE PM, KAAYA GP. "Prevalence and Antimicrobial Resistance Pattern of Salmonella in Animal feed produced in Namibia. ." Veterinaria Italiana. 2012; 48 (2):125-132.
KAMWI RN, MFUNE JK, KAAYA GP, JONAZI JB. "Seasonal variation in the prevalence of malaria and vector species in northern Namibia." Journal of Entomology and Nematology. 2012;4 (5):42-48.
KAAYA GP, HEDIMBI M. "The use of entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae, as bio-pesticides for tick control." International Journal of Agricultural Sciences. 2012;2(6):245-250.
2011
HEDIMBI M, KAAYA GP, CHINSEMBU KC. " Mortalities induced by entomopathogenic fungus Metarhizium anisopliae to different ticks of economic importance using two formulations." International Research Journal of Microbiology. 2011;2:141-145.
KAAYA GP, SAMISH, M., HEDIMBI, M., GINDIN G, GLAZER I. "Control of tick populations by spraying Metarhizium anisopliae conidia on cattle under field conditions. ." Experimental and Applied Acarology. 2011;55:273-281.
HEDIMBI, M., KAAYA GP, SAMISH M, GINDIN, G., GLAZER I. "Pathogenicity of the entomopathogenic fungus Metarhizium anisopliae to the red-legged tick, Rhipicephalus evertsi everts." Journal of Entomology and Nematology. 2011;3(7): 68-72.
2009
KAAYA G.P., KANDILA-MUANDINGI, P.N., LOTFY EL-SAYED, H.R, MSHIGENI K. "Determination of optimum ratios of seaweed in mushroom cultivation substrates and ability of mushrooms to absorb iodine.". In: Proc. AGRISSON Congress. Oshakati Country Hotel; 2009.
KAAYA G.P., HEDIMBI M. "Evaluation of fungal entomopathogens as a component of integrated tick management.". In: Proc. AGRISSON Congress. Oshakati Country Hotel; 2009.
KAAYA GP. "Development of innovative method based on fungal entomopathogens for control of the economically-important African ticks.". In: 22nd World Association for the Advancement of Veterinary Parasitology (WAAVP, 2009) Conference. Calgary, Canada; 2009.
KAAYA G.P. "Neem (Azadirachta indica): Its potential for control of African ticks of economic importance.". In: 22nd World Association for the Advancement of Veterinary Parasitology (WAAVP, 2009) Conference. Calgary, Canada; 2009.
HEDIMBI, M., P. KAAYAG, M. CHIMWAMUROMBEP. "Infections and mortalities induced by Metarhizium anisopliae in various developmental stages of the red-legged tick Rhipicephalus evertsi evertsi using 2 formulations." Journal of the South African Veterinary Association. 2009;80(2):129.
M. Hdedimbi, G.P.Kaaya, S. Singh, P.M. Chimwamurombe, G. Gindin, I. Glazer, SAMISH M. "Protection of Metarhizium anisopliae conidia ftom ultra-violet radiation and their pathogenicity to Rhipicephalus evertsi everstsi ticks.". In: In” DISEASES OF MITES AND TICKS, Eds.Jan Bruin, Leo, P.S van der Geest. Springer-Science + Business media; 2009.
2008
SOLOMON ANDG, KAAYA GP. "Prevalence of camel ticks and haemoparasites in Southern rangelands of Ethiopia." Discovery and Innovation. 2008;20:10-13.
HEDIMBI M, KAAYA GP, Singh, CHIMWAMUROMBE, P.M., GINDIN, G., GLAZER I, SAMISH M. "Protection of metarhizium anisopliae conidia from ultra-violet radiation and their pathogenicity to Rhipicephalusevertsi evertsi ticks." Experimental and Applied Acarology. 2008;46:149-156.
2007
HEDIMBI, M., KAAYA GP, Singh S, CHIMWAMUROMBE, P.M. "Improvement of fungal formulations for tick control using oils and sunscreens.". In: PARSA 2006. Windhoek, Namibia; 2007.
KUBASU, S.S., MAKOKKHA GL, KAAYA G. "Biological differences within Rhipicephalus appendiculatus Neumann (AKARI: IXODIDAE) Populations in Kenya." Journal of the Eqyptian Society of Parasitology . 2007;37 (2):411-418.
KAAYA, G.P., SAXENA RC, GEBRE S. "The potential of Neem products for control of economically-important African ticks." Biosciences Biotechnology Research Asia. 2007;4 (1):95-104.
2006
KIBUKA-SEBITOSI E, KAAYA GP. "The potential of lectins in the prevention and control of tick-borne diseases.". In: PARSA 2006. Windhoek, Namibia; 2006.
SEBITOSI EK, KAAYA GP. "Effect of bovine blood fractions on the infectivity of Theileria parva to bovine blood lymphocytes." Biosciences Biotechnology Research Asia. 2006;3( 2):287-295.
HEDIMBI M, Singh S, KAAYA GP, Chimwamurombe P. Improvement of fungal formulations for tick control using oils and sunscreens.; 2006.
MARANGA, R.O., HASSANALI, A., KAAYA GP, MUEKE JM. "Performance of a Prototype Baited-trap in Attracting and Infecting the Tick Amblyomma variegatum (Acari: Ixodidae) in Field Experiments." Experimental and Applied Acarology. 2006;38: 211-218.
KAAYA G.P. "The role of parasitic wasps in integrated tick management.". In: Proc. PARSA Conference. Magoebaskloof Hotel, Limpopo Province, RSA; 2006.
2005
2004
P. KAAYAG. "Biocontrol of ticks using entomogenous fungi: Development of cheap fungal culture methods.". In: In proc. 3rd African Acarology Symposium. Cairo, Egypt ; 2004.
MARANGA, R.O., KAAYA, G.P., MUEKE JM, HASSANALI A. "Performance of a prototype baited trap in attracting and infecting Amblyomma variegatum (Fabricius, 1794) in field experiments.". In: In proc. 3rd African Acarology Symposium. Cairo, Egypt; 2004.
The potential of Neem products for the control of African ticks. Manyane, Pilansberg National Park, RSA: Journal of the South African Veterinary Association (2005) ; 2004.
GEBRE SOLOMON, MEKONNEN SILESHI, GODWIN KAAYA, TEKLE TILAHUN, JOBRE YILMA. "Prevalence of ixodid ticks and trypanosomosis in camels in southern rangelands of Ethiopia." Ethiopian Veterinary Journal . 2004;2:23-31.
2003
MARANGA, R.O., HASSANALI, A., KAAYA GP, MUEKE JM. "Attraction of Amblyomma variegatum (ticks) to the attraction-aggregation- attachment pheromone with or without carbon dioxide in the field." Experimental and Applied Acarology . 2003;29:121-130.
KAAYA GP. "Prospects for innovative methods of tick control in Africa." Insect Science and Its application. 2003;23 (1):59-67.
2002
P. KAAYAG. "Novel methods in the control of ticks.". In: Proc. PARSA Conf, Golden Gate Highlands National Park, RS.Africa.; 2002.
2001
MARANGA, R.O., HASSANALI A, KAAYA GP, MUEKE JM. "The attraction of Amblyomma variegatum to the aggregation-attachment pheromone with/without CO2 in the field.". In: 2nd African Acarology Symposium. ICIPE, Nairobi, Kenya; 2001.
MARANGA, R.O., KAAYA, G.P., MUEKE JM, HASSANALI A. "Effect of combining the fungi Beauveria bassiana and Metarhizium anisopliae, on the mortality of Amblyomma variegatum (Fabricus, 1794) .". In: 2nd African Acarology Symposium. ICIPE, Nairobi, Kenya; 2001.
MMARANGA RO, KAAYA GP, MUEKE JM, AND. HASSANALI A. "Mortality of Amblyomma variegatum (Fabricus, 1794) exposed to M. anisopliae and B. bassiana in traps baited with attraction-aggregation-attachment pheromone combined with CO2 in the field.". In: Second African Acarology Symposium. ICIPE, Nairobi, Kenya; 2001.
2000
P. KAAYAG. "The potential of pathogenic fungi for tick control.". In: Proceedings of the parasitological society of southern African (PARSA) conference. University of Orange Free State, Bluefontein, R. S. Africa; 2000.
KAAYA GP, HASSAN SM. "Entomogenous fungi as promising biopesticides for tick control." Experimental and Applied Acarology. 2000;24:913-923.
KAAYA GP. "Laboratory and field evaluation of entomogenous fungi for tick control." Ann. N. Y. Acad. Sci. 2000;916 : 559-564.
KAAYA GP, SAMISH M, ITAMAR G. "Laboratory Evaluation of Pathogenicity of Entomogenous nematodes to African tick species. ." Ann. N. Y. Acad. Sci . 2000;916:303-308.
KAAYA GP. "The potential of anti-tick plants as components of integrated tick control strategy." Ann. N. Y. Acad. Sci., . 2000;916 :576-582.
1999
KAAYA, G.P., SAXENA RC, SOLOMON G. "Evaluation of Neem products for control of the major African tick species.". In: Proceedings of International Neem Conference. ICIPE, Mbita Point Field Station, Kenya; 1999.
1998
SEBITOSI E, KAAYA GP. "Factors influencing transmission of Theileriosi in Africa.". In: The first Acarology Symposium. Pretoria, South Africa; 1998.
SEBITOSI, E. N., KAAYA, G.P., MWOOTHE, T., WORZAMA S., AGBEDE, R. I. S. "Factors influencing vector/parasite transmission of Theileriosis in Africa.". In: Intern. Conf. Assoc. Institutions of Trop. Vet. Med. Harare, Zimbabwe ; 1998.
DOSSA, S. C., ESSUMAN S, KAAYA GP. "Characterization of Amblyomma variegatum tick saliva and salivary gland antigens inducing anti-tick immunity in Boran cattle. ." International Journal of Acarology. 1998;24:149-157.
KAAYA GP, MWANGI EN. "Control of livestock ticks in Africa: Possibilities of biological control using the entomogenous fungi, Beauveria bassiana and Metarhizium ." PERSPECTIVE”, (Eds. Coons, L. and Rothschild, M.), . 1998;1:5-16.
SEBITOSI, E. N., KAAYA, G.P., Young AS, AGBEDE RIS. "Lectins in brown ear tick, Rhipicephalus appendiculatus: Detection and partial characterization." International journal of Acarology. 1998;24:159-164.
SOLOMON, G., KAAYA, G.P., GEBREAB, F., GEMETCHU T, TILAHUN G. "Population studies on ticks feeding on indigenous cattle and incidence of tick-borne parasites in Didtuyura ranch in southern Ethiopia." Insect Science and Its Application. 1998;18:59-66.
1997
KAAYA GP, SAXENA RC. "Prospects for the control of ticks using Neem compounds.". In: Proceedings of Uganda Veterinary Association Annual Conference. Kampala; 1997.
P. KAAYAG. "Evaluation of a fungal formulation for control of ticks in vegetation.". In: Proc. Tanzania Vet.Association Annual Conference. Arusha; 1997.
Mwangi, J.W., HASSAN, S. M., KAAYA GP, ESSUMAN S. "The impact of Ixodiphagus hookeri, a tick parasitoid on Amblyomma variegatum (Acari: Ixodidae) in a field trial in Kenya." Experimental and Applied Acarology. 1997;21:117-126.
MWANGI EN, KAAYA GP. "Prospects of using parasitoids (Insecta) for tick management in Africa." International Journal of Acarology. 1997;23:215-219.
1996
P. KAAYAG. "INSECT IMMUNE MECHANISMS: Their roles in vectorial capacity and efficacy of biological control agents.". In: Proceedings of Tanzania Entomological Association conference. Arusha, Tanzania; 1996.
SOLOMON G, KAAYA GP. "Comparison of resistance in three breeds of cattle against African Ixodid ticks." Experimental and Applied Acarology. 1996;20:223-230.
KAAYA GP. "Mortality and pathology in tsetse flies (Glossina spp.) treated with Neem extracts." Tanzania Veterinary Journal. 1996;16:58-65.
1995
1994
MATUMBARA-MABVENI ARS, KAAYA GP. "Antibacterial activity in Crop- borers haemolymph: Implications for biological control.". In: Proceedings of third International Conference on Tropical Entomology. Nairobi, Kenya; 1994.
KAAYA GP, MWANGI EN. "The potential of indigenous botanicals for tick control in Africa.". In: Proceedings of 12th Tanzania Veterinary Association scientific conference. Arusha, Tanzania; 1994.
KAAYA, G.P. ANDMWANGIEN. "Biocontrol potentials of Entomogenous fungi, Beauveria bassiana and Metarhizium anisopliae for livestock ticks Rhipicephalus appendiculatus and Amblyomma variegatum.". In: Proceedings of 9th International Congress of Acarology. Columbus, Ohio, USA; 1994.
Mwangi, J.W., KAAYA GP, ESSUMAN S. "Studies on Ixodiphagus hookeri, a parasitoid of Amblyomma variegatum in Kenya.". In: Proceedings of 9th International Congress of Acarology. Columbus, Ohio, USA; 1994.
Mwangi, J.W., KAAYA GP, KIMONDO MG. "Infection of Amblyomma variegatum with a hymenopteran parasitoid in the laboratory and some aspects of its basi biology." Journal of Biological Control. 1994;4(2):101-104.
Mwangi, J.W., ESSUMAN, S., KAAYA, G.P., NYANDAT, E., MUNYINYI D, KOMONDO MG. "Repellence of the tick Rhipicephalus appendiculatus by the grass Melinis minutiflora." Tropical Animal Health and Production. 1994;27:211-216.
1993
P. KAAYAG. "The role of indigenous plant extracts in integrated control of African livestock ticks.". In: Proceedings of 9th International Veterinary Hemoparasite Disease Conference. Merida, Mexico; 1993.
KAAYA GP. "Biological Control: An environmentally safe alternative to chemical Pesticides.". In: In "community-based environmentally-safe Pest Management". Eds. R.K. Saini and P.T. Haskell.; 1993.
KAAYA GP. "Inducible humoral antibacterial immunity in insects.". In: In "INSECT IMMUNITY" Ed. Pathak, J.P.N. New Delhi, Bombay, Calcutta.: Oxford and IBH Publishing Co. Ltd; 1993.
Mwangi, J.W., NEWSON RM, KAAYA GP. "A new hymenopteran species of parasitoid isolated from the Bont tick, Amblyomma variegatum." Discovery and Innovation. 1993;5:331-335.
KAAYA, G.P., SESHU REDDY KV, KOKWARO ED. "Pathogenicity of Beauveria bassiana, Metarhizium anisopliae and Serratia marcescens to the banana weevil,Cosmopolites sordidus." Biocontrol science and technology. 1993;3:177-187.
KAAYA GP, Seshu‐Reddya KV, KOKWARO ED, Munyinyia DM. "Pathogenicity of Beauveria bassiana, Metarhizium anisopliae and Serratia marcescens to the banana weevil Cosmopolites sordidus.". 1993. AbstractPathogenicity of Beauveria bassiana, Metarhizium anisopliae and Serratia marcescens to the banana weevil Cosmopolites sordidus

Two exotic fungal isolates, one of Beauveria bassiana (268–86) and another of Metarhizium anisopliae (100–82), three local isolates of B. bassiana (isolates I, II, III) and one of the entomogenous bacteria Serratia marcescens, were tested for pathogenicity against the banana weevil Cosmopolites sordidus. All four isolates of B. bassiana and the one of M. anisopliae were found to be pathogenic to third—instar larvae of C. sordidus, causing mortalities of 98–100% by 9 days post—exposure to dry fungal spores. M. anisopliae was the least pathogenic to larvae with LT50 of 4.2 days, compared to 3.5, 3.3, 3.6 and 4.0 respectively for isolates I, II, III and 268–86. B. bassiana was also pathogenic to adult C. sordidus, causing mortalities varying from 63–97% by 35 days post—exposure depending on isolate. As for larvae M. anisopliae exhibited low pathogenicity for the adult C. sordidus. In general, all the fungi tested were less pathogenic to adult weevils (LT50 = 17.5; 12.5; 8.0 and 22.0 days) for isolates I, II, III and 268–86 respectively, while isolate 100–82 failed to kill 50% of adults even by 35 days post—exposure. Incubation of dead weevils in a moist environment led to development of surface mycelia starting from intersegmental junctions. Histopathology revealed extensive destruction of internal organs by hyphae which invaded most of the organs. The LT50 for S. marcescens against C. sordidus larvae was 2.8 days. However, the bacterium did not kill adult C. sordidus even at 10 times the concentration applied on larvae.

DAVIS-COLE, J.O.A., MORGAN, H. G., CHAUDHURY MFB, KAAYA GP. "Some aspects of sexual receptivity and refractory behavior in female Glossina morsitans Morsitans Westwood." Insect Science and its Applications . 1993;14:723-727.
1992
"Prospects for biological control of tsetse and livestock ticks using entomophathogenic fungi.". In: Proceedings of 10th Tanzania Veterinary Association Scientific Conference. Arusha, Tanzania; 1992.
KAAYA, G.P. AND MWANGI EN. "Pathogenicity of Beauveria bassiana and Metarhizium anisopliae for tsetse Glossina morsitans and ticks Rhipicephalus appendiculatus.". In: Proceedings of Society for Invertebrate pathology conference. Heidelberg, Germany; 1992.
KAAYA GP. "Non-chemical agents and factors capable of regulating tick populations in nature: A mini Review." Insect Science and Its Application. 1992;13:587-594.
1991
KAAYA GP. "Microorganisms associated with tsetse in nature and their pathogenicity tests.". In: Proceedings of Annual Meeting of Society for Invertebrate Pathology. Flagstaff, Arizona, USA; 1991.
KAAYA, G.P. AND SESHU-REDDY KV. "Pathogenity and biocontrol potentials of entomopathogens Beauveria bassiana, Metarhizium anisopliae and Serratia marcescens for the banana weevil, Cosmopolites sordidus.". In: Proceedings of Annual Meeting of the Society for Invertebrate Pathology. Flagstaff, Arizona, USA; 1991.
KAAYA GP. "Biological control agents and other natural factors as regulators of tick populations.". In: Proceedings of 9th Tanzania Veterinary Association Conference. Arusha, Tanzania; 1991.
Mwangi, J.W., NEWSON RM, KAAYA GP. "Drop-off patterns for engorged adult females, nymphs and larvae of Rhipicephalus appendiculatus." Insect Science and Its Application. 1991;12:629-633.
Mwangi, J.W., R.M NEWSON, KAAYA GP. "Predation of free-living engorged female Rhipicephalus appendiculatus." Experimental and Applied Acarology. 1991;12:153-162.
Mwangi, J.W., DIPEOLU, O.O., KAAYA, G.P., NEWSON, R.M., S.M. HASSAN. "Predators, parasitoids and pathogens of ticks. ." A review.Biocontrol Science and Technology. 1991;1:147-156.
1990
KAAYA GP. "Humoral antibacterial immunity in tsetse.". In: In "Molecular and Physiological Basis of Vector Parasite Interactions and Its Epidemiological Implications". Dormy House Hotel, Broadway, Worcestershire; 1990.
KAAYA GP. "Pathogenicity and biocontrol potentials of Beauveria bassiana and Metarhizium anisopliae for tsetse Glossina morsitans morsitans.". In: Proceedings of Vth International Colloquium on Invertebrate Pathology and Microbial control. Adelaide, Australia; 1990.
KAAYA GP, OKECH MA. "Microorganisms associated with tsetse in nature: Preliminary results on isolation, identification and pathogenicity." Insect Science and Its Application. 1990;11:443-448.
Otieno, R.O, ODINDO, M., KAAYA GP, BANDA HK. "Virus particle infection in laboratory-reared Glossina pallidipes Austen (Diptera: Glossinidae).". In: In "Sterile Insect Technique for Tsetse Control and Eradication. VIENNA: IAEA, VIENNA, STI/PUB/830; 1990.
1989
KAAYA GP. "Humoral immunity in tsetse.". In: Proceedings of the International Symposium on Molecular Insect Science. Tucson, Arizona, U.S.A; 1989.
KAAYA GP. "Antibiotic properties of insect antibacterial factors.". In: Proceedings of the 8th Annual Joint Scientific Conference. Arusha, Tanzania; 1989.
KAAYA GP. "Laboratory evaluation of biocontrol potentials of entomopathogenic fungi for tsetse.". In: Proceedings of the 7th Tanzania Veterinary Association Scientific Conference. Arusha, Tanzania; 1989.
KAAYA GP. "An assessment of antibiotic potentials of insect antibacterial factors." Insect Science and Its Application . 1989;10:341-346.
MUTAYOBA, B.M., GOMBE, S., Waindi EN, KAAYA GP. "Comparative trypanotolerance of the small East African breeds of goats, from different localities, to Trypanosoma congolense infection." Veterinary Parasitology . 1989;31:95-105.
KAAYA GP, DARJI N. "Mortality in adult tsetse, Glossina morsitans morsitans caused by entomopathogenic bacteria." Journal of Invertebrate Pathology. 1989;54:32-38.
1988
KAAYA, G.P. AND DARJI N. "Pathogenicities of different entomopathogenic bacteria for adult tsetse Glossina morsitans morsitans.". In: Proceedings of the XVIII International Congress of Entomology. Vancouver, BC. Canada; 1988.
MUTAYOBA, B.M., GOMBE, S., Waindi EN, KAAYA GP. "Depression of ovarian function and plasma progesterone and oestradiol - 17B in female goats chronically- infected with Trypanosoma congolense." Acta Endocrinologica (Copenh) . 1988;117:477-484.
MUTAYOBA, B.M., GOMBE, S., KAAYA GP, Waindi EN. "Effects of chronic experimental Trypanosoma congolense infection on the ovaries, pituitary, thyroid and adrenal glands in female goats." Research in veterinary science . 1988;44:140-146.
KAAYA GP, DARJI N. "The humoral defense system in tsetse: Differences in response due to age, sex and antigen types." Developmental and Comparative Immunology . 1988;12:255-268.
1987
KAAYA, G.P., DARJI N, OTIENO LH. "Effects of bacteria, antibacterial compounds and trypanosomes on tsetse reproduction and longevity." Insect Science and Its Application . 1987;8:217-220.
1986
KAAYA, G.P. BOMANFLYGANDOTIENOHGCL. "Characteristics of acquired humoral immunity in tsetse flies, Glossina morsitans morsitans.". In: Proceedings of the 4th International colloquium of Invertebrate pathology. Veldhoven, The Netherlands; 1986.
KAAYA GP. "Future prospects of biological control of tsetse.". In: Proceedings of Scientific Meeting of Nairobi Cluster and Kenya Veterinary Association. ILRAD, Nairobi, Kenya; 1986.
1985
KAAYA, G.P. OTIENOANDDARJILHN. "Cellular and humoral immunity in Glossina.". In: Proceedings of ISDCI invertebrate immunology conference. Montpellier, France; 1985.
WHITELAW, D.D., KAAYA, G.P., MOULTON, J.E., Moloo SK, MURRAY M. "Susceptibility of different breeds of goats in Kenya to experimental infection with Trypanosoma congolense. ." Tropical Animal Health and Production . 1985;17:155-165.
1984
KAAYA GP, ALEMU P. "Further observations on survival and fertility of Glossina morsitans morsitans maintained on immunized rabbits. ." . Insect Science and Its Application. 1984;5:443-446.
1982
KAAYA GP, RATCLIFFE NA. "Comparative study of haemocytes and the associated cells of some medically important Dipterans." Journal of Morphology . 1982;173:351-365.
KAAYA GP, ALEMU P. "Fecundity and survival of tsetse maintained on immunized rabbits." Insect Science and Its Application . 1982;3:237-241.
1981
KAAYA, G.P., MAXIE MG, VALLI VEO. "Cryopreservation of bovine hemopoietic progenitor cells in liquid nitrogen." Cryobiology. 1981;18:119-124.
ODINDO, M., TURNER, D.A., OTIENO WA, KAAYA GP. "Cuticular lesions: Non-infectious integumental disease of Glossina spp." Insect Science and Its Application . 1981;2:213-217.
KAAYA, G.P., OTIENO LH. "Haemocytes of Glossina: I. Morphological classification and the pattern of change with age of the flies." Insect Science and Its Application. 1981;2:175-180.
1980
KAAYA GP, ODUOR-OKELLO D. "The Effects of Trypanosoma congolense infection on the testis and epididymis of the goat." . Bulletin of animal Health and production in Africa. 1980;28:1-5.
KAAYA, G.P., TIZARD, I.R., MAXIE MG, VALLI VEO. "Inhibition of leukopoiesis by sera from Trypanosoma congolense infected calves: Partial characterization of the inhibitory factor." Tropenmedizin und Parasitologie . 1980;31:232-238.
1979
1978
KAAYA, G.P., VALLI, V.E.O., MAXIE MG. "Bovine erythrocytic, granulocytic and macrophage colony formation in culture." Canadian Journal of Comparative Medicine. 1978;42:322-326.
1977
KAAYA, G.P. WINGVISTANDJOHNSONGLW. "Clinico-pathological aspects of Trypanosoma congolense infection in goats." Bulletin of animal Health and production in Africa. 1977;25:397-408.

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