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Population sampling of planthoppers, leafhoppers and insect predators on broadcast rice, treated with carbofuran, in Eastern Sri Lanka

Published online by Cambridge University Press:  19 September 2011

G. F. Rajendram
G. F. Rajendram
Affiliation:
Department of Zoology, University of Jaffna, Sri Lanka
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Abstract

A survey of planthopper and leafhopper assemblages and insect predators was conducted in the rice fields of Kaluvanchikudi in Batticaloa District and Kohabana and Central Camp in Amparai District during the dry (yala) season in 1989. Nilaparvata lugens (Stål) was the predominant planthopper species in these rice fields; Sogatella furcifera (Horvath) comprised less than 10% of the sample in any field. The leafhopper species collected included Nephotettix nigropictus (Stål), Nephotettix virescens (Distant), Recilia dorsalis (Motschulsky), and Cofana (= Tettigella) spectra (Distant). Nephotettix species were predominant in Kaluvanchikudi and Kohabana, while R. dorsalis was dominant in Central Camp. Insect predators included the mirid, Cyrtorhinus lividipennis Reuter, an anthocorid, Onus tantillus (Motschulsky) and two coccinellids, Harmonia octomaculata (Fabricius) and Micrapsis discolor (Fabricius). Application of furadan granules reduced the planthopper and leafhopper populations drastically, but did not appreciably reduce the insect predator population.

Résumé

Une étude a été menée sur les Cicadellides, les Fulgorides et les insectes prédateurs collectés dans les riziéres de Kaluvanchikudi dans la région de Batticaloa et de Kohabana et de Central Camp dans la région de Amparai pendant la saison séche (yala) de 1989. Nilaparvata lugens (Stål) a été l'espéce prédominate dans ces riziéres; Sogatella furcifera (Horvath) a représenté moins de 10% de l'échantillon pour toutes les rizières. Les espèces de Cicadellides collectées includent Nephotettix nigropictus Stal, Nephotettix virescens (Distant), Recilia dorsalis (Motschulsky), et Cofana (= Tettigella) spectra (Distant). Les espéces de Nephotettix ont été prédominates à Kaluvanchikudi et à Kohabana tandis que R. dorsalis a été dominante à Central Camp. Les insectes prédateurs includent le Miride Cyrtorhinus lividipennis Reuter, l'Anthocoride Orius tantillus (Fabricius) et deux Coccinellides Harmonia octomaculata(Fabricius) et Micrapsis discolor (Fabricius). L'application de granules de Furadan a considérablement réduit les populations de Fulgorides et Cicadellides mais pas des insectes prédateurs de façon appréciable.

Keywords

Planthoppersleafhopperspredatorsrice
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 15 , Issue 2 , April 1994 , pp. 139 - 143
Copyright
Copyright © ICIPE 1994

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References

REFERENCES

Fernando, H. E. (1975) The brown planthopper problem in Sri Lanka. The Rice Entomol. Newsl. 2, 34–36.Google Scholar
Fowler, S. F. (1988) Field studies on the impact of natural enemies of brown planthopper populations of rice in Sri Lanka. In Proceedings of 6th Auchenorrhyncha Meeting (Edited by Vidano, C. and Arzone, A.), pp. 567–574. Turin, Italy.Google Scholar
Ghauri, M. S. K. (1971) Revision of the genus Nephotettix Matsumura (Hemiptera: Cicadelloidea: Euscelidae) based on the type material. Bull. Entomol. Res. 60, 481–512.CrossRefGoogle Scholar
Kenmore, P. E., Carino, F. O., Perez, C. A., Dyck, V. A. and Gutierrez, A. P. (1985) Population regulation of the rice brown planthopper (Nilaparvata lugens Stal) within rice fields in the Philippines. J. Plant Prot.Trop. 1, 19–37.Google Scholar
Kiritani, K. (1976) The effect of insecticides on natural enemies with particular emphasis on the use of selective and low rates of insecticides. Rev. Plant Prot. Res. 9, 90–100.Google Scholar
Kuno, E. (1968) Studies on the population dynamics of rice leafhoppers in a paddy field. Bull. Kyushu Agric. Exp. Station 14, 131–246. (In Japanese with an English summary).Google Scholar
Kuno, E. (1977) Distribution pattern of the rice brown planthopper and field sampling techniques. In The Rice Brown Planthopper. Food and Fertilizer Technology Center for the Asian and Pacific Region, pp. 135–146. Taipei, Taiwan.Google Scholar
Otake, A., Somasundaram, P. H. and Abeykoon, M. B. (1976) Studies on populations of Sogatella furcifera Horvath and Nilaparvata lugens Stal. (Hemiptera: Delphacidae) and their parasites in Sri Lanka. Appl. Entomol. Zool. 11, 284–294.CrossRefGoogle Scholar
Perfect, T. J., Cook, A. G. and Ferrer, E. R. (1983) Population sampling for planthoppers, leafhoppers (Hemiptera: Delphacidae and Cicadellidae) and their predators in flooded rice. Bull. Entomol. Res. 73, 345–355.CrossRefGoogle Scholar
Rajendram, G. F. (1982) The brown planthopper problem. Section D. Presidential Address. Proc. Sri Lanka Assoc. Adv. Sci. 38(2), 49–54.Google Scholar
Rajendram, G. F. (1984) Biological control of paddy pests in Sri Lanka. Vidurava: Bull. Nat. Res. Energy Sci. Auth. Sri Lanka 8(1), 16–19.Google Scholar
Rajendram, G. F. and Devarajah, F. R. (1990) Survey of pest and beneficial insects of the rice crop in Sri Lanka. J. Nat. Sci. Counc. Sri Lanka 18(1), 79–82.Google Scholar