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Significance of the tropical fire ant Solenopsis geminata (hymenoptera: formicidae) as part of the natural enemy complex responsible for successful biological control of many tropical irrigated rice pests

Published online by Cambridge University Press:  10 February 2009

M.J. Way*
Affiliation:
Department of Biology, Imperial College London, Silwood Park, Ascot, Berkshire, SL5 7PY, UK
K.L. Heong
Affiliation:
International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
*
*Author for correspondence Fax: +207 594 2450 E-mail: 2ways@talktalk.net

Abstract

The tropical fire ant Solenopsis geminata (Fabricius) often nests very abundantly in the earthen banks (bunds) around irrigated rice fields in the tropics. Where some farmers habitually drain fields to the mud for about 3–4 days, the ants can quickly spread up to about 20 m into the fields where they collect food, including pest prey such as the eggs and young of the apple snail Pomacea caniculata (Lamarck) and insects such as lepidopterous larvae and hoppers, notably Nilaparvata lugens (Stäl) the brown planthopper (Bph) and green leafhoppers Nephotettix spp. Even in drained fields, the activity of S. geminata is restricted by rainfall in the wet season. The relatively few ant workers that forage characteristically into drained fields and on to the transplanted clumps of rice plants (hills) kill the normally few immigrant Bph adults but are initially slower acting than other species of the natural enemy complex. However, larger populations of Bph are fiercely attacked and effectively controlled by rapidly recruited ant workers; whereas, in the absence of the ant, the other natural enemies are inadequate. In normal circumstances, there is no ant recruitment in response to initially small populations of immigrant Bph and no evidence of incompatibility between ant foragers and other natural enemies such as spiders. However, when many ants are quickly and aggressively recruited to attack large populations of Bph, they temporarily displace some spiders from infested hills. It is concluded that, in suitable weather conditions and even when insecticides kill natural enemies within the rice field, periodic drainage that enables S. geminata to join the predator complex is valuable for ant-based control of pests such as snails and Lepidoptera, and especially against relatively large populations of Bph. Drainage practices to benefit ants are fully compatible with recent research, which shows that periodic drainage combats problems of ‘yield decline’ in intensively irrigated tropical rice and is also needed in South East Asia to make better use of seriously declining water supplies for irrigation.

Type
Research Paper
Copyright
Copyright © 2009 Cambridge University Press

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References

Bouman, B.A.M. (2001) Water-efficient management strategies in rice production. International Rice Research Notes 26, 1722.Google Scholar
Bouman, B.A.M., Lampayam, R.M. & Tuong, T.P. (2007) Water Management in Irrigated Rice – Coping with Water Scarcity. 54 pp. Los Banos, Philippines, International Rice Research Institute.Google Scholar
Claridge, M.F., Morgan, J.C., Steenkiste, A.E., Iman, M. & Damyanti, D. (2002) Experimental field studies on predation and egg parasitism of rice brown planthopper in Indonesia. Agricultural and Forest Entomology 4, 203209.Google Scholar
Dawe, D., Dobermann, A., Moya, P., Abdulrachman, S., Bijay Singh, Lal, D., Li, S.Y., Lin, B., Panaullah, G., Sariam, O., Singh, Y., Swarup, A., Tan, P.S. & Zhen, Q.-X. (2000) How widespread are yield declines in long-term rice experiments in Asia? Field Crops Research 66, 175193.Google Scholar
Guerra, L.C., Bhuiyan, S.I., Tuong, T.O. & Barker, R. (1998) Producing More Rice with Less Water from Irrigated Systems. 19 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Islam, Z., Way, M.J. & Heong, K.L. (2000) Methods for sampling and monitoring ants in the rice environment. Bangladesh Journal of Entomology 10, 97114.Google Scholar
Kenmore, P.E., Carino, F.O., Perez, C.A., Dyck, V.A. & Guitierrez, A.P. (1984) Population regulation of the rice brown planthopper Nilaparvata lugens Stäl within rice fields in the Philippines. Journal of Plant Protection in the Tropics 1, 1937.Google Scholar
Shepard, B.M., Barrion, A.T. & Litsinger, J.A. (1987) Helpful Insects, Spiders and Pathogens. 136 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Singh, C.B., Aujla, T.S., Sandhu, B.S. & Khera, K.L. (1996) Effect of transplanting date and irrigation regime on growth, yield and water use in rice (Oryza sativa) in northern India. Indian Journal of Agricultural Science 66, 137141.Google Scholar
Sunderland, K.D., Axelsen, J.A., Dromph, K., Freier, B., Hemptinne, J.-L., Holst, N.H., Mols, P.J.M., Petersen, M.K., Powell, W., Ruggle, P., Triltsch, H. & Winder, L. (1997) Pest control by a community of natural enemies. pp. 271326in Powell, W. (Ed.) Arthropod Natural Enemies in Arable Land. Vol. III. Acta Jutlandica 72(2). Denmark, Aarhus University Press.Google Scholar
Way, M.J. & Heong, K.L. (1994) The role of biodiversity in the dynamics and management of insect pests of tropical irrigated rice – a review. Bulletin of Entomological Research 84, 567587.Google Scholar
Way, M.J. & Khoo, K.C. (1992) Role of ants in pest management. Annual Review of Entomology 37, 479503.Google Scholar
Way, M.J., Islam, Z., Heong, K.L. & Joshi, R.C. (1998) Ants in tropical irrigated rice: distribution and abundance, especially of Solenopsis geminate (Hymenoptera:Formicidae). Bulletin of Entomological Research 88, 457476.Google Scholar
Way, M.J., Javier, G. & Heong, K.L. (2002) Role of ants, especially the Fire Ant Solenopsis geminata, in the biological control of tropical upland rice pests. Bulletin of Entomological Research 92, 431437.Google Scholar
Yusa, Y. (2001) Predation on eggs of the apple snail Pomacea canaliculata (Gastropoda:Ampullariidae) by the fire ant Solenopsis geminata. Journal of Molluscan Studies 67, 275279.CrossRefGoogle Scholar