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International Journal of Tropical Insect Science

, Volume 4, Issue 4, pp 397–399 | Cite as

Studies on the Population Control of Pieris Brassicae L. BY Apanteles Glomeratus L.

  • G. K. Karnavar
Article

Abstract

—Parasitization of P. brassicae L. by A. glomeratus L. was found to be between 63.79 and 76.52% in Farm 1 and 92.68 and 93.43% in Farm 2. Population density of the parasitoids ranged between 35.16 + 6.05 and 57.76 ± 13.20. The developmental period of the parasitoids within the host was 21 days and the pupal period 9 to 10 days. The population of the parasitoid showed a steady increase during November-December. The rate of pupation of P. brassicae showed a decline from 36.21% in mid-November to 23.48% in later November in Farm 1 with an early crop. In Farm 2 with a late crop the pupation rate dwindled from an already low 7.32 to 6.57% by late December.

Key Words

Pieris brassicae Linnaeus parasitoids Apanteles glomeratus Algeria 

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Copyright information

© ICIPE 1983

Authors and Affiliations

  • G. K. Karnavar
    • 1
  1. 1.Department of BiologyUniversity of SwazilandKwaluseniSwaziland

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