Proceedings: Animal Sciences

, Volume 91, Issue 2, pp 165–176 | Cite as

Studies on egg and nymphal parasites of rice planthoppers,Nilaparvata lugetts (stål) andSogatella furcifera (Horvath)

  • J S Bentur
  • Mangal Sain
  • M B Kalode


Three species of egg parasites, viz.,Anagrus sp.,A. optabilis (Mymaridae) andOligosita sp. (Trichogrammatidae), and a nymphal/adult parasiteGonatopus sp. of rice planthoppers were studied for their biology and control potential. Larger number of adult mymarids emerged from host eggs between 8·30 a.m. and 12·30 p.m. of the day whereas trichogrammatid adults emerged between 12·30 p.m. to 4·30 p.m. All the three species parasitised both brown planthopper (BPH) and white backed planthopper (WBPH) but, in general, failed to parasitise rice leaf-hoppers.

Developmental duration from oviposit ion to adult emergence noted for these parasites indicated that males of mymarids, in general, developed faster (10–11 days) than females (12–13 days) at 20–32° C prevailing during October, whereasOligosita females developed more slowly (14–15 days). However, bothA. optabilis andOligosita developed three days faster at 30–38° C prevailing during April, Fecundity in terms of number of eggs parasitised per female varied from 12·3 to 20·3. Under greenhouse conditions, release of 1 and 5 pairs of mymarid parasites for 10 days reduced the nymphal hatch of BPH by 60 and 85%, respectively. Nymphal/adult parasiteGonatopus sp. completed its life cycle in 19·5 to 31 days on both BPH and WBPH. While the 4th and 5th instar nymphs of BPH were parasitised more frequently, green leafhopper nymphs were not parasitised. Besides being endoparasitic, the adult females also predated on and killed as many as 5·2 nymphs a day.


Anagrus sppGonatopus parasitoids rice planthoppers 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Anonymous 1978 Prospects for biological control of rice hoppers—A status paper, Commonwealth Institute of Biological Control, p. 12Google Scholar
  2. Bentur J S and Kalode M B 1980 Biocontrol studies on leaf and planthoppers. Proc. 3rd Workshop of All India Co-ordinated Research Project on Biological Control of Crop Pests and Weeds, Ludhiaua, Indian Council of Agricultural Research, New Delhi, pp. 103–108Google Scholar
  3. Chiu S G 1979 Biological and cultural control of the brown planthopper pp. 335–355. In:Brown planthopper : Threat to rice production in Asia, International Rice Research Institute, Los Banos, PhilippinesGoogle Scholar
  4. Kalode M B 1974 Recent changes in relative pest status of rice insects as influenced by cultural, ecological and genetic factors;Intern. Rice Res. Conference, April 1974, IRRI, Los BanosGoogle Scholar
  5. Kulshrestha J P, Anjaneyulu A and Padmanabhan SY 1974 The disastrous brown planthopper attack in Kerala;Indian Farm 24 5–7Google Scholar
  6. Manjunath T M 1978 Two nematode parasites of rice brown planthopper in India;Int. Rice Res. Newslett. 3 11–12Google Scholar
  7. Manjunath T M, Rai P S and Gowda G 1978 Parasites and predators ofNilaparvata htgens in India;PANS 24 265–269Google Scholar
  8. Olmi M 1976 Experience and prospects of biological control with Dryinidae (Hymenoptera : Bethylaidea) In:Atti XI Coitgresso Nazionale ItaJiarto di Entomologia (English Abstract) pp. 371–373Google Scholar
  9. Samal P and Misra B C 1978 Notes on egg parasites of the brown planthopperNilaparvata lugens (Stal) in Orissa;Oryza 15 96–98Google Scholar
  10. Shukla K K 1979 Occurrence of a new insect, small brown planthopper,Loadelphax striate!lus (Fallen) in India;Curr. Sci. 48 548Google Scholar
  11. Verma S K, Pathak P K, Singh B N and Lai M N 1979 Occurrence of brown and whitebacked planthoppers in Uttar Pradesh, India;Int. Rice Res. Newslett. 4 20Google Scholar
  12. Vungsilabutr P 1978 Biological and morphological studies ofParacentrohia andoi (Ishii) (Hymenoptera: Trichogrammatidae), a parasite of the green leaf hopper,Nephoteitix cincti-ceps Uhler (Homoptera: Deltocephalidae);Esakia 11 29–51Google Scholar

Copyright information

© Indian Academy of Sciences 1982

Authors and Affiliations

  • J S Bentur
    • 1
  • Mangal Sain
    • 1
  • M B Kalode
    • 1
  1. 1.All India Coordinated Rice Improvement ProjectRajendranagarHyderabadIndia

Personalised recommendations