University of Guam, Western Pacific Tropical Research Center - Research for Guam's Future
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Research

Gadi VP Reddy

Current Address: Montana State University

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Education

PhD University of Agricultural Sciences, Bangalore, India 
Post Doctoral studies Rothamsted Experimental Station, Harpenden, England

Research Interests

Professional Service

Subject Editor, Environmental Entomology, 2008-present.
http://www.entsoc.org/pubs/periodicals/ee/index.htm

Subject Editor, Annals of the Entomological Society of America, 2008-present.
http://www.entsoc.org/pubs/periodicals/ann/index.htm

Associate Editor, Florida Entomologist,  2005-present.
http://flaentsoc.org/standingcommittees08.htm#Publications

Environmental Assessment 2011

Puccinia Spegazzinii

Lab Members

Christy Leppanen, Ph.D., Post-doctoral Fellow (4/2012-present)
Raymond Gumataotao, Field Technician (06/2002–present)
Jenelyn E. Remolona, Research Assistant-II (09/2009–present)
David M.H. Mantanona, Research Associate-I (10/2011–present)
Robert C. Mendi, Research Assistant-i (o1/2012-present)
Christopher Roger Mann, Research Associate-I (12/11-present)

Contact Information:

Telephone: 671-735-2142
Cell Phone: 671-998-0166
Fax: 671-734-4600
Contact Gadi VP Reddy via email

Gadi VP Reddy is currently involved in the following Fields of Study:

Publications by Gadi VP Reddy:

Reddy, G.V.P., Z. Zhao, and R.A. Humber. 2014. Laboratory and field efficacy of entomopathogenic fungi for the management of the sweetpotato weevil, Cylas formicarius (Coleoptera: Brentidae). Journal of Invertebrate Pathology 122: 10–15.

Reddy, G.V.P., K. Tangtrakulwanich, S. Wu, J.H. Miller, V.L. Ophus, J. Prewett, and S.T. Jaronski. 2014 Evaluation of the effectiveness of the entomopathogens for the management of wireworms (Coleoptera: Elateridae) on spring wheat. Journal of Invertebrate Pathology 120: 43–49.

Reddy, G. V. P., K. Tangtrakulwanich, S. Wu, J.H. Miller, V.L. Ophus, and J. Prewett. 2014. Sustainable management tactics for control of Phyllotreta cruciferae (Coleoptera: Chrysomelidae) on canola in Montana. Journal of Economic Entomology 107: 661-666.

Tangtrakulwanich, K., G.V.P. Reddy, S. Wu, J.H. Miller, V.L. Ophus, and J. Prewett. 2014. Efficacy of entomopathogenic fungi and nematodes, and low risk insecticides against wheat stem sawfly, Cephus cinctus (Hymenoptera: Cephidae). Journal of Agricultural Sciences 6: 1–9.     

Reddy, G.V. P., S. Wu, R.C. Mendi, and R.H. Miller. 2014. Efficacy of pheromone trapping of the sweetpotato weevil (Coleoptera: Brentidae): Based on dose, septum age, attractive radius, and mass trapping. Environmental Entomology 43: 767-773.

Reddy, G. V. P., and R. H. Miller. 2014. Biorational versus conventional insecticides – Comparative field study for managing red spider mite and fruit borer on tomato. Crop Protection 64: 88–92.

Reddy, G. V. P., and K. Tangtrakulwanich. 2014. Module of integrated insect pest management on tomato with growers’ participation. Journal of Agricultural Sciences 6: 10–17.

Reddy, G.V.P., and R.H. Miller. 2014. Field evaluation of petroleum spray oil and carbaryl against the red spider mite (Acari: Tetranychidae) on eggplant. Florida Entomologist 97: 108–113.

Gadi, N., and G.V.P. Reddy. 2014. Are sweetpotato weevils differentially attracted to certain colors? Annals of the Entomological Society of America 106: 274–278.

Reddy, G. V. P., and K. Tangtrakulwanich. 2014. Potential application of pheromones in monitoring, mating disruption and control of click beetles (Coleoptera: Elateridae). ISRN Entomology, vol. 2004, Article ID 531061, 8 pages, doi:10.1155/2014/531061

Reddy, G.V. P., and K. Tangtrakulwanich. 2013. Action threshold treatment regimens for red spider mite and fruit borer on tomato. Florida Entomologist 96: 1084–1096.

Reddy, G.V.P., R. Kikuchi, and J.R. Bautista. 2013. Threshold-based spraying decision programs for the red spider mite Tetranychus marianae on eggplant. Journal of Applied Entomology 137: 429–436. 

Reddy, G.V.P., and R.S. Kikuchi, and R. Muniappan. 2013. The impact of Cecidochares connexa (Diptera: Tephritidae) on Chromolaena odorata (Asteraceae) in Guam. In: C. Zachariades, M. Day, R. Muniappan, and L. Strathie (eds), Proceedings of the Eighth International Workshop on Biological Control and Management of Chromolaena odorata and other Eupatorieae, Nairobi, Kenya, 1-2 November 2010. ARC, Pretoria, South Africa, pp. 128-133.

Reddy, G.V.P., J.E. Remolona, C.M. Legdesog, and G. J. McNassar. 2013. Effective biological control programs for invasive plants on Guam. In: Y. Wu, T. Johnson, S. Sing, S. Raghu, G. Wheeler, P. Pratt, K. Warner, T. Center, J. Goolby and R. Reardon (eds) Proceedings of the XIII International Symposium on Biological Control of Weeds, September 11-16, 2011, Hawaii, USA, 224–229.

Reddy, G.V. P., Shi, P., Mann, C. R., Mantanona, D.M.H., and Dong, Z. 2012. Can a semiochemical-based trapping method diminish the damage levels by Rhabdoscelus obscurus (Coleoptera: Curculionidae). Annals of the Entomological Society of America 105: 693-700.

Reddy, G.V.P., and J.R. Bautista. 2012. Integration of the predatory mite Neoseiulus californicus and petroleum spray oil for control of Tetranychus marianae on eggplant, Biocontrol Science and Technology 22: 1211–1220.

Reddy, G.V.P., N. Gadi, and A.J. Taianao. 2012. Efficient sex pheromone trapping technique: catching the sweetpotato weevil Cylas formicarius. Journal of Chemical Ecology 38: 846–853.

Leng, P.H., and G.V.P. Reddy. 2012. Bioactivity of selected eco-friendly pesticides against the sweetpotato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), Florida Entomologist 95: 1040–1047.

Reddy, G.V.P., J. McConnell, and A. E. Badilles. 2012. Estimation of the population density of the sweetpotato weevils on the Mariana Islands. Journal of Entomological and Acarological Research 44: 18– 21.

Reddy, G.V.P. 2012. Recent trends in the olfactory responses of insect natural enemies to plant volatiles, In: Biocommunication of Plants (Editors: G. Witzany and F. Baluska), Springer-Verlag Berlin Heidelberg, Germany, pp, 281-301.

Reddy,G.V.P. 2011. Development of semiochemical-based strategies for old-house borer, Hylotrupes bajulus (Coleoptera: Cerambycidae). Journal of Entomological and Acarological Research, Ser. II, 43: 111–115.

Reddy, G. V. P., and J.P. Bamba. 2011. Impact of reduced-risk insecticides against the insect pests on cabbage (Brassica spp.). Proceedings of the Sixth International Workshop on the Management of the Diamondback Moth and Other Cruciferous Insect Pests, The AVRDC, The World Vegetable Center, Tawain, 255–259. 

Reddy, G. V. P., and R. Kikuchi. 2011. Laboratory host range assessment of a predatory pentatomid, Podisus maculiventris (Hemiptera: Pentatomidae) for field release on Guam. Florida Entomologist 94: 853-858.

Reddy, G. V. P., S. Balakrishnan, J. E. Remolona, R. Kikuchi and J.P. Bamba. 2011. Influence of trap type, size, color, and trapping location on the capture of the New Guinea sugarcane weevil, Rhabdoscelus obscurus (Coleoptera: Curculionidae). Annals of the Entomological Society of America 104: 594-603.

Reddy, G.V.P. 2011. Comparative effect of integrated pest management and farmers' standard pest control practice for managing insect pests on cabbage (Brassica spp.). Pest Management Science 67: 980-985.

Reddy, G.V.P., and A. Raman. 2011. Visual cues are relevant in behavioral control measures for Cosmopolites sordidus (Coleoptera: Curculionidae). Journal of Economic Entomology 104: 436-442.

Reddy, G.V.P., R. Kikuchi, and J. E. Remolona. 2011. New mite species associated with certain plant species from Guam. Journal of Entomological and Acarological Research, Ser. II, 43: 41–46.

Reddy, G.V.P. 2011. Survey of invasive plants on Guam and identification of the 20 most widespread. Micronesica, 41: 263-274.

Reddy, G.V.P., and Guerrero, A. 2010. New pheromones and insect control strategies. Vitamins and Hormones 83: 493-519.

Reddy, G. V. P., Muniappan, R., Cruz, Z. T., Naz, F., Bamba, J. P., and Tenorio, J. 2009. Present status of Maconellicoccus hirsutus (Hemiptera: Pseudococcidae) in the Mariana Islands and its control by two fortuitously introduced natural enemies. Journal of Economic Entomology 102: 1431-1439.

Reddy, G.V.P., Cruz, Z.T., and Guerrero, A. 2009. Development of an efficient pheromone-based trapping method for the banana root borer Cosmopolites sordidus. Journal of Chemical Ecology 35: 111-117.

Muniappan, R., Reddy, G. V. P., and Raman, A., eds. 2009. Biological Control of Tropical Weeds using Arthropods. Cambridge University Press, Cambridge, UK, 512p.

Reddy, G.V.P., Cruz, Z.T., Braganza, N., and Muniappan, R. 2009. The response of Melittia oedipus (Lepidoptera: Sesiidae) to visual cues is increased by the presence of food source. Journal of Economic Entomology 102: 127-132.

Muniappan, R., Reddy, G. V. P., and Raman, A. 2009. Biological control of weeds in the tropics and sustainability. In: Biological Control of Tropical Weeds Using Arthropods (Editors: Muniappan, R., Reddy, G. V. P., and Raman, A.). Cambridge University Press, Cambridge, UK, pp. 1-16.

Muniappan, R., Raman, A., and Reddy, G. V. P. 2009. Biological control of the Crofton weed, Ageratina adenophora. In: Biological Control of Tropical Weeds Using Arthropods (Editors: Muniappan, R., Reddy, G. V. P., and Raman, A.). Cambridge University Press, Cambridge, UK, pp. 63-73.

Zachariades, C., Day, M., Muniappan, R., and Reddy, G. V. P. 2009. Chromolaena odorata (Asteraceae) and its biological control. In: Biological Control of Tropical Weeds Using Arthropods (Editors: Muniappan, R., Reddy, G. V. P., and Raman, A.). Cambridge University Press, Cambridge, UK, pp. 130-162.

Muniappan, R., Reddy, G. V. P., and Raman, A. 2009. Biological control of Coccinia grandis. In: Biological Control of Tropical Weeds Using Arthropods (Editors: Muniappan, R., Reddy, G. V. P., and Raman, A.). Cambridge University Press, Cambridge, UK, pp. 175-182.

Bamba, J.P., R.H. Miller, G.V.P. Reddy, and R. Muniappan. 2009. Studies on the biology, host specificity, and feeding behavior of Acythopeius cocciniae O'Brien and Pakaluk (Coleoptera: curculionidae) on Coccinia grandis (L.) Voigt (Cucurbitaceae) and Zehneria guamensis (Merrill) Fosberg (Cucurbitaceae). Micronesica 41: 70-82.

Reddy, G. V. P., Cruz, Z. T., and Muniappan, R. 2009. Life-history, host preference and establishment status of Melittia oedipus (Lepidoptera: Sesiidae), a biological control agent forCoccinia grandis (Cucurbitaceae) in the Mariana Islands. Plant Protection Quarterly 24: 27-31.

Reddy, G.V.P., Cruz, Z.T., Naz, F., and Muniappan, R. 2008. A pheromone-based trapping system for monitoring the population of Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae). Journal of Plant Protection Research 48: 295-300.

Reddy, G.V.P., Cruz, Z.T. and Muniappan, R. (2007) Attraction of fruit-piercing moth Eudocima phalonia to different fruit baits. Crop Protection, 26 (4) 664-667.

Reddy, G.V.P. (2007) Improved Semiochemical-based trapping method for old-house borer, Hylotrupes bajulus (Coleoptera: Cerambycidae). Environmental Entomology, 36 (2) 281-286.

Raman, A., Cruz, Z.T., Muniappan, and Reddy, G.V.P. (2007). Biology, host-specificity, and field release of gall-inducing Acythopeus burkhartorum (Coleoptera: Curculionidae: Baridinae), a biological control agent for the invasive weed Coccinia grandis (Cucurbitaceae) in Guam and Saipan. Tijdschrift voor Entomologie, 150 (1): 1-11.

Lai, P-Y, Reddy, G.V.P. and Muniappan, R. eds. 2007. Proceedings of the Seventh International Workshop on Biological Control and Management of Chromolaena odorata and Mikania micrantha, National Pingtung University of Science and Technology, Taiwan, p. 119.
 


Muniappan, R., Englberger, K. and Reddy, G.V.P. 2007. Biological control of Chromolaena odorata in the American Pacific Micronesian Islands, In: Proceedings of the Seventh International Workshop on Biological Control and Management of Chromolaena odorata and Mikania micrantha, (Editors: Lai, P-Y, Reddy, G.V.P. and Muniappan, R.), National Pingtung University of Science and Technology, Taiwan, pp. 49-52.

Cruz, Z., Muniappan, R. and Reddy, G.V.P. (2006). Establishment of Cecidochares connexa (Diptera: Tephritidae) in Guam and its effect on the growth of Chromolaena odorata (Asteraceae). Annals of the Entomological Society of America, 99 (4): pp. 845-850.

Muniappan, R., Meyerdirk, D.E., Sengebau, F. M., Berringer, D.D. and Reddy, G.V.P. (2006). Classical biological control of the papaya mealybug, paracoccus marginatus (Hemiptera: Pseudococcidae) in the Republic of Palau.Florida Entomologist, 89 (2): pp. 212-217.

Raman, A., Muniappan, R., Silva-Krott, I.U. and Reddy, G.V.P. 2006. Induced-defence responses in the leaves of Chromolaena odorata consequent to infestation by Pareuchaetes pseudoinsulata (Lepidoptera: Arctiidae). Journal of Plant Diseases and Protection, 113 (5): 234-239.

Muniappan, R., Purea, M., Sengebau, F. and Reddy, G.V.P. (2006) Orange spiny whitefly, Aleurocanthus spiniferus (Quaintance) (Homoptera: Aleyrodidae) and its parasitoids in the Republic of Palau, Proceedings of the Hawaiian Entomological Society, 38: pp. 21-25.

Reddy, G.V.P. and Baskaran, P. (2006) Damage potential of the spider mite Tetranychus ludeni (Acari: Tetranychidae) on four varieties of eggplant. International Journal of Tropical Insect Science, 26 (1): pp. 48-56.

Reddy, G.V.P., Fettköther, R., Noldt, U. and Dettner, K. (2005) Enhancement of the attraction and trap catches of the old-house borer, Hylotrupes bajulus (Coleoptera: Cerambycidae), by combination of male sex pheromone and monoterpenes. Pest Management Science, 61 (7): pp. 699-704.

Reddy, G.V.P., Fettköther, R., Noldt, U. and Dettner, K. (2005) Capture of female Hylotrupes bajulus as influenced by trap type and pheromone blend. Journal of Chemical Ecology, 31 (9): pp. 2169-2177.

Reddy, G.V.P., Cruz, Z.T., Bamba, J. and Muniappan, R. (2005) Development of a semiochemical-based trapping method for the New Guinea sugarcane weevil, Rhabdoscelus obscurus. Journal of Applied Entomology, 129 (2): pp. 65-69.

Reddy, G.V.P., Cruz, Z.T., Bamba, J. and Muniappan, R. (2005) Host adaptation of the fruit piercing moth, Eudocima fullonia. Physiological Entomology, 30 (4): pp. 398-401.

Muniappan, R., Reddy, G.V.P. and Lai, P.-Y. (2005) Distribution and biological control of Chromolaena odorata. In: Invasive Plants: Ecological and Agricultural Aspects, (ed.: Inderjit), Birkhäuser Verlag, Basel, Switzerland, pp. 223-233.

Reddy, G.V.P. and Guerrero, A. (2004) Interactions of insect pheromones and plant semiochemicals. Trends in Plant Science, 9 (5): pp. 253-261.

Reddy, G. V. P., Tossavainen, P., Nerg, A.-M. and Holopainen, J. K. (2004) Elevated atmospheric CO2 affects chemical quality of Brassica plants and growth rate of the specialist, Plutella xylostella, but not the generalist, Spodoptera littoralis.Journal of Agricultural and Food Chemistry, 52 (13): pp. 4185-4191.

Reddy, G.V.P., Tabone, E. and Smith, M.T. (2004) Mediation of host selection and oviposition behavior in the diamondback moth Plutella xylostella and its predator Chrysoperla carnea by chemical cues from cole crops. Biological Control, 29 (2): 270-277.

Vuorinen, T., Reddy, G.V.P. and Nerg, A.-M. and Holopainen, J.K. (2004) Monoterpene and herbivore-induced emissions from cabbage plants grown at elevated atmospheric CO2 concentration. Atmospheric Environment, 38 (5): 675-682.

Muniappan, R., Bamba, J., Cruz, J. and Reddy, G.V.P. (2004) Biology, rearing and field release on Guam of Euplectrus maternus, a parasitoid of the fruit-piercing moth, Eudocima fullonia. BioControl, 49 (5): 537-551.

Meyerdirk, D.E., Muniappan, R., Warkentin, R., Bamba, J. and Reddy, G.V.P. (2004) Biological control of the papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae) in Guam. Plant Protection Quarterly, 19 (3): 110-114.

Muniappan, R., Englberger, K., Bamba, J. and Reddy, G.V.P. (2004) Biological control of chromolaena in Micronesia. In: Chromolaena in the Asia-Pacific Region, Proceedings of the 6th International Workshop on Biological Control and Management of Chromolaena, (Editors: Day, M.D. and McFadyen, R.E.), ACIAR, Canberra, Australia, 55: 11-12.

Muniappan, R., Bamba, J., Cruz, J. and Reddy, G.V.P. (2004) Field response of Guam populations of the New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae), to aggregation pheromones and food volatiles. Micronesica, 37 (1): 57-68.

Vuorinen, T., and Nerg, A.-M., Ibrahim, M.A., Reddy, G.V.P. and Holopainen, J.K. 2004) Emission of Plutella xylostella-induced compounds from cabbages grown at elevated CO2 and orientation behavior of the natural enemies, Plant Physiology, 135 (4): 1984-1992.

Muniappan, R. and Reddy, G.V.P. (2003) Fortuitous introduction of two natural enemies of Lantana camara to Chuuk. Proceedings of the Hawaiian Entomological Society, 36: pp. 123-124.

Muniappan, R., Bamba, J., Cruz, J. and Reddy, G.V.P. (2003) Current status of the red coconut scale, Furcaspis oceanica Lindinger (Homoptera: Diaspididae) and its parasitoid, Adelencyrtus oceanicus Doutt (Hymenoptera: Encyrtidae), in Guam. Plant Protection Quarterly, 18 (2): 52-54.

Reddy, G.V.P., Quero, C. and Guerrero, A. (2002) Activity of octylthiotrifluoropropan-2-one, a potent esterase inhibitor, on growth, development and intraspecific communication in Spodoptera littoralis and Sesamia nonagrioides. Journal of Agricultural and Food Chemistry, 50 (24): 7062-7068.

Reddy, G.V.P. (2002) Plant volatiles mediate orientation and plant preference by the predator Chrysoperla carnea Stephens (Neuroptera: Chrysopidae). Biological Control, 25 (1): 49-55.

Muniappan, R., Purea, M., Tarilongi, B., Berukilukilu, L., Bule, S. and Reddy, G.V.P. (2002) Fruit piercing moths in Vanuatu and their management,Journal of South Pacific Agriculture, 9 (1&2): 16-27.

Reddy, G.V.P., Holopainen, J.K. and Guerrero, A. (2002) Olfactory responses of Plutella xylostella natural enemies to host pheromone, larval frass, and green leaf cabbage volatiles.Journal of Chemical Ecology, 28 (1): 131-143.

Reddy, G.V.P. (2001) Comparative effectiveness of an integrated pest management system and other control tactics for managing spider mite Tetranychus ludeni (Acari: Tetranychidae) on eggplant. Experimental and Applied Acarology, 25 (12): 985-992.

Reddy, G.V.P. and Guerrero, A. (2001) Optimum timing of insecticide applications against diamondback moth, Plutella xylostella in cole crops using threshold catches in sex pheromone traps. Pest Management Science, 57 (1): 90-94.

Manjunatha, M., Hanchinal, S.G. and Reddy, G.V.P. (2001) Survey of yellow mite and thrips on chilli in North Karnataka. Insect Environment, 6 (4): 178.

Reddy, G.V.P. and Guerrero, A. (2000) Behavioral responses of the diamondback moth, Plutella xylostella, to green leaf volatiles of Brassica oleracea subsp. capitata. Journal of Agricultural and Food Chemistry, 48 (12): 6025-6029.

Reddy, G.V.P. and Guerrero, A. (2000) Pheromone-based integrated pest management to control the diamondback moth Plutella xylostella in cabbage fields. Pest Management Science, 56 (10): 882-888.

Reddy, G.V.P. and Manjunatha, M. (2000) Laboratory and field studies on the integrated pest management of Helicoverpa armigera on cotton, based on pheromone trap catch threshold level. Journal of Applied Entomology, 124 (5-6): 213-221.

Fettköther, R., Reddy, G.V.P., Noldt, U. and Dettner, K. (2000) Effect of host and larval frass volatiles on behavioral response of the old house borer Hylotrupes bajulus (L.) (Coleoptera: Cerambycidae), in a wind tunnel bioassay. Chemoecology, 10 (1): 1-10.

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