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Parasitization of heliothis spp and alabama argillacea hubner lepidoptera noctuidae eggs on cotton by trichogramma pretiosum riley hymenoptera trichogrammatidae in northern parana brazil


Parasitization of heliothis spp and alabama argillacea hubner lepidoptera noctuidae eggs on cotton by trichogramma pretiosum riley hymenoptera trichogrammatidae in northern parana brazil



Anais da Sociedade Entomologica do Brasil 18(Suppl): 161-168



Surveys to determine the parasitism of Heliothis spp. eggs on cotton by Trichogramma pretiosum Riley were conducted during four crop seasons in Centenario do Sul (1984/85 to 1987/88) and in one season in Maringa and Santa Fe, Parana, Brazil (1987/88). Parasitization of Alabama argillacea (Hubner) was evaluated once during the 1986/87 crop season in Centenario do Sul. The mean levels of parasitism in Heliothis eggs in Centenario do Sul were 86%, 74%, 48% and 63% for the four season surveys, respectively. Eighty-two percent of the Heliothis eggs collected in Maringa and Santa Fe were parasitized. Higher levels of parasitism (94%) were observed in A. argillacea eggs.

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Related references

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