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INSECT PARASITES OF THE DIAMONDBACK MOTH Plutella xylostella (L.) AND SEASONAL FLUCTUATIONS IN PARASITISM AT THREE LOCATIONS IN JAMAICA

Author

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  • Forbes, Ricardo A.
  • Mansingh, Ajai

Abstract

Two species of parasites of Plutella xvlostella (L.) were recorded in Jamaica, and indeed in the Caribbean, for the first time. These are: a new species of the larval parasites Diadeoma {Ichneumonidae) and the larval and pupal parasite, Tetrastichus Bokolowskii Kurdjumov. A new species of a hyperparasite of Diadeoma, Spilochalcis sp. was also recorded. The Incidence of parasitism by these hymenopterans has been fairly high throughout the study period of 1986-1988 in three cabbage growing areas of Jamaica, in spite of heavy uses of insecticides on weekly or twice-weekly basis. The monthly mean levels of parasitism (with ± 95 percent C.L.) in Douglas Castle between March 1986 and July 1987, was 32.8 ± 8 percent, and in Guys Hill, it was 16 ± 10 percent between August 1987 and August 1988.

Suggested Citation

  • Forbes, Ricardo A. & Mansingh, Ajai, 1988. "INSECT PARASITES OF THE DIAMONDBACK MOTH Plutella xylostella (L.) AND SEASONAL FLUCTUATIONS IN PARASITISM AT THREE LOCATIONS IN JAMAICA," 24th Annual Meeting, August 15-20, 1988, Ocho Rios, Jamaica 260329, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs88:260329
    DOI: 10.22004/ag.econ.260329
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