Mbata, George




143 Miller





Septemeber 2009 – Present: Professor & Interim Head, Department of Biology, FVSU
Duties: Administration, Teaching and Research
August 2000-August 2009: Professor, Department of Biology, FVSU
Duties: Administration, Teaching and Research
April 1999-July 2000: Research Fellow, Department of Entomology, Oklahoma State University
August 1997-March 1999: Research Fellow, Department of Entomology, Kansas State University.
Duties: Researched on the sex pheromone of lygus bugs. Investigate the chemical cues needed by a parasiod of Callosobruchus species to locate the host.
March,1997-July 1997: Research Fellow, Department of Entomology, Mississippi State University.
Duties: Carried out bioassies to determine the efficacy of the synthesized sex pheromone of Callosobruchus maculatus and C. subinnotatus. Demonstrated the efficacy of the pheromones in the field.
September 1983- March 1997: Professor, Reader, Senior Lecturer, Lecturer, Abia State University, Nigeria.
Duties: a) Conducted research on the oviposition pheromones of the bean beetles and resistance of grain varieties to storage Insects. Researched into host palnt resistance (HPR) in maize varieties, bambarra groundnuts and cowpeas.
b) Participated in extension work with farmers in Eastern Nigeria. Monitored the incidence of storage insects from farms to storage. Recommended appropriate control measures.
Assisted farmers in the use of controlled atmospheres in the disinfestation of their commodidities particularly dried cocoa beans and cowpea.
December 1982-August1983 Senior Research Officer, Nigerian Stored Products Research Institute. Kano, Nigeria.
Duties: Researched resistance of peanut varieties to insect pests. Identified varieties resistance to red flour beetle and Indian meal moth. Screened insecticides for use in stored products. Supervised large scale fumigation for the National Peanut board. This saved at least 25% of the harvested peanuts from insect damage.


Ph.D Zoology, University of Ibadan, Nigeria, 1982.
Dissertation: “Management of Plodia interpunctella (Hubner) (Lepidoptera: Phycitidae) a pest of stored peanuts in Nigeria”.
M.S. Zoology, University of Ibadan, Nigeria, 1980.
B.S. Zoology, University of Ibadan, Nigeria, 1977.


Mbata, G. N., Phillips, T. W. and Payton, M. (2009) Effects of Cowpea Varietal Susceptibility and Low Pressure on the Mortality of Life Stages of allosobruchus
maculatus (Coleoptera:Bruchidae).J. Stored Prod. Res. 45, 232-235.
Mbata, G. N., and Brewster, C. C. (2009) Functional Response of Pteromalus cerealellae (Hymenoptera: Pteromalidae) on the cowpea weevil, Callosobruchus
maculatus (Coleoptera: Bruchidae), and interaction between parasitism and cowpea varietal susceptibility. BioControl. 54, 751-761.
Shapiro-Ilan, D. I., Mbata, G. N., Nguyen, K. B., Peat, S. M., Blackburn, D. and Adams, B. J. 2009. Characterization of biocontrol traits in the entomopathogenic nematode Hetrorhabditis Georgiana (Kesha starin), phylogenetic analysis of the
nematode’s symbiotic bacteria. Biol. Control. 51, 377-387.
Nguyen, K. B, Shapiro-Ilan, D. I., Mbata, G. N. 2008. Heterorhabditis georgiana n. sp. tida:Heterorhabditidae) from Georgia, USA. Nematology, 10, 433-448.
Ebenezer O Onagbola, O.E., Fadamiro, H.Y., Mbata, G.N. (2007). Longevity, fecundity and progeny sex ratio of Pteromalus cerealellae in relation to diet, host provision, and mating. Biol. Control. 40, 222-229
Opolot, H.N., Agona, A., Kyamanywa, S., Mbata, G.N. and Adipala, E. (2006). Integrated field management of cowpea pests using selected synthetic and botanicals pesticides. Crop Protection. 25, 1145 – 1152.
Mbata, G. N. and Shapiro-Ilan, D. I. (2005). Laboratory evaluation of virulence of Heterorhabditid nematodes to Plodia interpunctella Hübner (Lepidoptera:
Pyralidae). Environ. Entomol. 34, 676-682.
Mbata, G. N., Johnson, M., Phillips, T. W. and Payton, M. (2005). Mortality of life stages of cowpea weevil, Callosobruchus maculatus (Coleoptera: Bruchidae) exposed to low pressure at different pressures. Econ. Entomol. 98, 1070-1075.
Mbata, G. N., Thomas, A. and Fadamiro, H. F. (2005). Parasitism by Pteromalus cerealellae (Hymenoptera: Pteromalidae) on the cowpea weevil, Callosobruchus maculatus (Coleptera: Bruchidae): Host density, temperature effects, and host finding ability. Biol. Control 33, 286-292.
Mbata, G. N., Shu, S., Phillips, T.W. and Ramaswamy, S. B. (2004). Semiochemical cues used by Pteromalus cerealellae (Hymenoptera:Pteromalidae) to locate its host, Callosobruchus maculatus (Coleoptera:
Bruchidae). Ann. Enotomol. Soc. Am. 97, 353-360.
Mbata, G. N., Phillips, T. W. and Payton, M. (2004). Mortality of Eggs of stored-product eggs held under vacuum: Effect of pressure, temperature and exposure time. J. Econ. Entomol. 97(2) 695-702.
Mbata, G. N. and Phillips T. W. (2001) Prospects low pressure for use in the disinfestation of stored products. Pytoparasitica, 29, 31S (abstract).
Mbata, G. N. and Phillips T.W. (2001) Effects of temperature and exposure time on mortality of stored-product insects exposed to low pressure. J. Econ. Entomol. 94, 1302-1307.
Mbata, G.N., Shu, S and Ramaswamy, S. B. (2000). Sex pheromones of Callosobruchus maculatus and C. subinnotatus (Coleoptera: Bruchidae): Cogeneric responses and role of air movement. Bull. Entomol Soc. 90, 147-154.
Ramaswamy, S.B., Shu, S., Mbata, G.N., Rachinsky, A., Park, Y.I., Crigler, L. Donald, S., and Srinivasan, A. (2000). Role of hormone-esterase in mating-stimulated egg development in the moth Heliothis virescens. Insect Biochem. Mol Biol. 30, 785-791.
Mbata, G.N., Hetz, S. K., Reichmuth, C. and Adler, C. (2000) Tolerance of pupae of Callosobruchus subinnotatus Pic (Coleoptera: Bruchidae) to modified
atmospheres: a factor of pupal metabolism. J. Insect Physiol. 46, 145-151.
Shu, S, Mbata, G. N., Cork, A. and Ramaswamy, S. B. (1999) The chemistry of the sex pheromone of Callosobruchus subinnotatus. Chemical Ecology 25, 2715-2727.
Mbata, G. N., Shu, S and Ramaswamy, S. B. (1999) Comparative responses of normal and active males of Callosobruchus subinnotatus (Pic) to sex pheromones. Ann. Entomol. Soc Am. 92, 594-600.
Mbata, G. N., Ramaswamy, S. B. and Reichmuth, Ch. (1998) Comparative effect of short term exposures of Callosobruchus subinnotatus to carbon dioxide, nitrogen or low temperature on behavior and fecundity. Entomologia exp. Applic. 89, 243-248.
Shu, S., Mbata, G. N. and Ramaswamy, S. B. (1998) Female sex pheromone in Callosobruchus subinnotatus (Coleoptera: Bruchidae): production and male response. Ann. Entomol. Soc. Am. 91, 840-844.
Mbata, G.N., Chinta, S. and Ramaswamy, S.B. (1997) Morphology and distribution of the sensilla of labial palps, and tarsi of Callosobruchus maculatus and
Callosobruchus subinnotatus. Ann. Enotomol. Soc. Am. 90, 462-469.
Mbata, G.N., Shu, S. and Ramaswamy, S.B. (1997) Rhythmicity of mating and oviposition in Callosobruchus subinnotatus (Pic.) (Coleoptera:Bruchidae). J.
Insect Behavior. 11, 409 – 423.
Shu, S., Koepnick , W., Mbata, G.N., Cork, A., and Ramaswamy, S.B.(1996). Sex pheromone production in Callosobruchus maculatus (Coleoptera: Bruchidae)
Electroantennographic and behavioral responses. J. stored Prod. Res. 32, 21-30.
Mbata, G.N. and Reichmuth, Ch. (1996). The comparative effectiveness of different modified atmospheres for the disinfestation of bambarra groundnuts, Vigna subterranea (L:) verde, infested by Callosobruchus subinnotatus (Pic.) Pleoptera :Bruchidae). J. stored Prod. Res. 32, 45-52.
Mbata, G.N.and Reichmuth, Ch. (1996) Comparative Study of toxicity of carbon dioxide to Callosobruchus maculatus (Fab.) and Callosobruchus subinnotatus
(Pic) (Coleoptera:Bruchdae). Post Harvest Technology 7, 271-276.
Ramaswamy, S.B., Shu, S., Monroe, W.A. and Mbata, G.N. (1995) Ultrastructure of integumentary glandular cells in adult male and female Callosobruchus
subinnotatus and C. maculatus (Coleoptera:Bruchidae) Int. J. Insect morphol. embryol. 24, 51-61.
Mbata, G.N. (1995) Effect of infestation of cultivars of bambarra groundnuts(Vigna
subterranea (L.) (Verde) by Callosobruchus subinnotatus (Pic.) (Coleoptera:Bruchidae) on biochemical deterioration and germination of the seeds. Z.
Pflanzenkrank. und Pflanzenschutz 101, 350-356.
Mbata, G.N., Oji, O.A. and Nwana, I.E.(1995) Insecticidal activity of preparations from the brown pepper, Piper guineense on Callosobruchus maculatus (F.).
Discovery and Innovations 7, 139-142.
Mbata, G.N. and Ramaswamy, S.B. (1995) Factors affecting the stability and the recognition of the oviposition pheromone in the Callosobruchus subinnotatus (Pic.) Coleoptera:Bruchidae). J. stored Prod. Res. 31, 157-163.
Mbata, G.N. (1994) Sensory organs involved in egg distribution in Callosobruchus subinnotatus (Pic.) (Coleoptera:Bruchidae). J. stored Prod. Res. 30(4), 339-346.
Ramaswamy, S.B., Mbata, G.N., Cohen, N.E., Moore, A. and Cox, N.E. (1994) Pheromonotropic and Pheromonostatic activity in moths. Arch. insect Biochem. Physiol. 25, 301-315.
Mbata, G.N. (1993a) The susceptibility of varieties of bambarra groundnuts to infestation by Callosobruchus subinnotatus(Pic.) (Coleoptera: Bruchidae) during storage. Insect Sci applic. 14, 687-691.
Mbata, G.N. (1993b) The effect of cold treatment on the various stages of two congeneric Callosobruchus species. Nig. J. Biotech. 10, 58-62.
Mbata, G.N. (1993c) Some factors affecting oviposition and development in Callosobruchus subinnotatus (Pic.) (Coleoptera: Bruchidae). Z.
Pflanzenkrankenheiten und Pflanzenschutz 100(2), 155-164.
Mbata, G.N. (1993d) The evaluation of the susceptibility of varieties of cowpea to infestation by two bruchids, Callosobruchus maculatus (F.) and Callosobruchus subinnotatus(Pic.). J. stored Prod. Res. 29, 207-213.
Emefu E.E., Ojimelukwe, P.C. and Mbata, G.N. (1992). Effect of insect infestation on the proximate composition and functional properties of flour samples and protein isolates from bambarra groundnuts and cowpea. J. Fd. Sci. Tech. 29,174- 176.
Mbata, G.N. (1992a). Studies on comparative susceptibility of varieties of bambarra groundnuts to infestation by Callosobruchus maculatus (F.) (Coleoptera: Bruchidae). Trop. Sci. 32, 186-193.
Mbata, G.N. (1992b). Egg distribution on seeds by Callosobruchus subinnotatus (Pic.) (Coleoptera: Bruchidae). J. stored Prod. Res. 28, 301-305.
Mbata, G.N. (1992c). The use of resistant varieties in the control of the storage insect pests of grain legumes and cereals. AMBIO 21, 475-478.
Mbata, G.N. (1992d). Interaction between influences of seed types and oviposition marker on egg distribution by Callosobruchus maculatus (F.) (Coleoptera:
Bruchidae). J. appl. Entomol. 113, 228-232.
Mbata, G.N. and Ramaswamy, S.B. (1991) Relationship between pheromone titer and mating in Heliothis virescens (F.) (Lepidoptera: Noctuidae). J. appl.
Entomol. 111, 237-242.
Mbata, G.N. (1990a) Studies on the intraspecific larval interaction in a laboratory culture of Plodia interpunctella (Hb.)(Lepidoptera: Pyralidae) on two food
media. Insect Sci. applic. 11, 245-251.
Mbata, G.N. (1990b) Suitability of maize varieties for oviposition and development of Plodia interpunctella (HB.) (Lepidoptera:Pyralidae). Trop. Pest Mgt. 36, 122- 127.
Mbata, G.N. (1990c) Some aspects of the biology of Callosobruchus subinnotatus (Pic.) (Coleoptera: Bruchidae) a pest of stored bambarra groundnuts. Insect
Sci. applic. 11, 227-234.
Mbata, G.N. and Ramaswamy, S.B. (1990) Rhythmicity of sex pheromones content in female Heliothis: Impact of mating. Physiol. Entomol. 15, 423-432.
Ramaswamy, S.B., Mbata, G.N. and Cohen, N.E.(1990) Necessity of juvenile hormone for choriogenesis in the moth, Heliothis virescens (Noctuidae). Invert. Reprod. & Develop. 17, 57-63.
Mbata, G.N. (1988a) Studies on some aspects of the biology of Corcyra cephalonica (Stainton) (Lepidoptera: Galleridae). J. stored Prod. Res. 25, 181-186.
Mbata, G.N. (1988b) Development of two stored products insects: Corcyra cephalonica (Stainton) (Lepidoptera: Galleridae) and Tribolium castaneum
(Herbst) (Coleoptera:Tenebrionidae) on variously modified media of Treculia africana. Nig. J.Biotech. 5, 27-30.
Okafor, F.C., Mbata G.N. and Anosike, J. (1988) Studies on Paraphistomium cervi (Schrank, 1970) infections of ruminants in Imo State, Nigeria, with special reference to the role played by Bulinus B. forskalii (Ehrenbrg) in their transmission. Bull. Anim. Hlth. Prod. Afric. 36, 142-146.
Mbata, G.N., Osuji, F.N.C. and Okere, A.N. (1988) Studies on the developmental biology of Corcyra cephalonica (Stainton) (Lepidoptera:Galleridae) on
thirteen maize varieties. Trop. Sci. 28, 25 – 34.
Mbata, G.N. (1987a) Studies on induction of larval diapause in a Nigerian strain of Plodia interpunctella (Hb.) (Lepidoptera: Pyralidae) Insect Sci applic. 8, 317 -322.
Mbata, G.N. (1987b) Preliminary observations on the incidence of insect pests and deterioration in quality of stored groundnuts in some parts of northern Nigeria. Insect Sci appli. 8, 15-19.
Mbata, G.N. (1987c) Studies on the susceptibility of varieties of groundnuts to infestation by Plodia interpunctella (Hb.) (Lepidoptera: Pyralidae). J. stored Prod. Res. 23, 57-63.
Mbata, G.N. (1986a) The susceptibility of varieties of groundnuts to infestation by Tribolium castaneum (Herbst) (Coleoptera:Tenebrionidae). Trop. Sci. 26,187-194.
Mbata, G.N. (1986b) Combined effect of temperature and relative humidity on mating activities and commencement of oviposition in Plodia interpunctella (Hb.)
(Lepidoptera: Phycitidae). Insect Sci applic. 7, 623-628.
Mbata, G.N. (1985) Some physical and biological factors affecting oviposition by Plodia interpunctella (Hubner) (Lepidoptera: Phycitidae). Insect Sci. applic.
6, 597-604.
Mbata, G.N. and Osuji, F.N.C. (1983) Some aspects of the biology of Plodia interpunctella (Hubner) Lepidoptera:Pyralidae)as a pest of stored groundnuts in Nigeria. J. stored Prod. Res. 19, 141-151.
Mbata, G.N. and Reichmuth, Ch. (1993) Toxicity of inert atmospheres to various stages of Callosobruchus subinnotatus (Pic.) (Coleoptera: Bruchidae). Med.
Fac. Landbouww. Univ. Gent (Belgium) 58/2b, 593-598.
Mbata, G.N. and O.T. Ekpendu (1992). The insecticidal activity of products from four
botanicals against three storage beetles. Med. Fac. Landbouww. Rijksuniv. Gent, Belgium, 57(3a), 723-733.
Mbata, G.N. (1991) The biology of two congeneric Callosobruchus spp. (Pic.) Coleoptera: Bruchidae). Proc. 6th Int. Working Conf. Stored Products.
(Bordeaux, 1990) pg 341-348.
Mbata, G.N. and Phillips (2001). Prospects of low pressure for use in the disinfestation of stored-products. In: Donahaye, E.J., Navarro, S, and Leesch, J.
(eds.) Proceedings of International Conference on Controlled Atmospheres and Fumigations in Stored Products vol. , 285-295. Oct. 29-Nov. 3, 2000. Fresno, California.

Research Interests:

Research Interests:
The reproductive biology, behavior and management of post-harvest insect pests that attack produce on the farms and in storage.

1) March 21-2009 –April 5, 2009. Fulbright Senior Specialist in Post-Harvest IPM. Participated in leading a workshop on stored-Products protection in Murcia, Spain.
2) May 1996-November 1996: Resumption of Alexander von Humboldt fellowship in the Federal Republic of Germany.
Duties: Researched the use of controlled atmosphere in the disinfestation of stored grain legumes. Investigated the role of metabolism in pupal tolerance to controlled atmospheres.
3) November 1994- April 1996; Visiting Assistant Professor, Department of
Entomology Mississippi State University, USA.
Duties: Isolated, identified, characterized and synthesized the sex pheromone of two bean weevils. Carried out bioassay to determine the efficacy of the synthesized pheromone.
4) June 1991-May 1993: Alexander von Humboldt Research Fellow, Institute of
Stored Products Research, Koenigin Luise Strasse 19, Berlin, Germany.
Duties: Researched into the use of Controlled Atmospheres in the disinfestation of large bulks of grains for export.
5 March- October, 1988: African-American Institute Research Fellow, Mississippi State
University, Department of Entomology and Plant Pathology.
Duties: Researched into the sex pheromone of the tobacco bud worm.

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