Insect parasitological researches on the population of European corn-borer (Ostrinia nubilalis Hbn.) in the years 2000-2001
Keywords:
corn, European corn borer (Ostrinia nubilalis Hbn), parasitoidAbstract
I have done my investigations to determine in what percentages some insect species were parasiting the corn-borer moth population in the community Somogyszil of county Somogy. I therefore collected 4 × 100 damaged plants from a corn-field of 100 hectares in the falls 2000 and 2001. In springs of these years, with the aim of bringing up and identifying the pupae of the parasitoids, I put each 100 mothy plants in sacks and placed them in insectary. The results showed that an ichneumon fly Lydella thompsoni (Herting 1959) (parasiting % = 11.25) and an ichneumon wasp Sinophorus alkae (Ellinger et Sachtleben 1928) (parasiting % = 4.87) were the most important parasitoids of the corn-borer moth population in this areal. In slighter degree, the presence of Sympiesis viridula (Thompson 1878) (parasiting % = 0.62), Phaeogenes nigridens (Wesmael 1845) (parasiting % = 1) and Bracon sp. (parasiting % = 0.12) has also been verified.
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