Comparative Effects of Neem or Mineral Oil on Maize Weevil, Sitophilus zeamais Motsch. And its Parasitoid, Anisopteromalus calandrae (Howard).

Research Article

**Comparative Effects of Neem or Mineral Oil on Maize Weevil, Sitophilus zeamais Motsch. And its Parasitoid, Anisopteromalus calandrae (Howard).**

Masood Khan Khattak, Alberto B. Broce and Barry Dover

Crude neem oil diluted in acetone was tested for its toxic effect on the reproductive ability of the S. zeamais and its parasitoid A. calandrae. Neem oil at 100, 1,000 and 10,000 ppm on corn kernels did not affect the survival of adult weevils. Although, the oviposition rate was greatly reduced with 1,000 and 10,000 ppm neem oil, the eggs hatching and the F1 progeny reproduced normally. Neem oil at all doses (100-10,000 ppm ) did not show any detectable effect on the biology of A. calandrae. However, at 10,000 ppm neem oil showed a significant effect on the reprodutive potential of the parasitoid as measured by adult emergence and normal reproduction by F1 progeny.

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Masood Khan Khattak, Alberto B. Broce and Barry Dover, 2001. Comparative Effects of Neem or Mineral Oil on Maize Weevil, Sitophilus zeamais Motsch. And its Parasitoid, Anisopteromalus calandrae (Howard). Journal of Biological Sciences, 1: 378-381.

DOI: 10.3923/jbs.2001.378.381

URL: https://scialert.net/abstract/?doi=jbs.2001.378.381

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Authors

Masood Khan Khattak

Alberto B. Broce

Barry Dover

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Research Article

**Comparative Effects of Neem or Mineral Oil on Maize Weevil, Sitophilus zeamais Motsch. And its Parasitoid, Anisopteromalus calandrae (Howard).**

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