Articles

Pheromone-based monitoring of the European corn borer (Ostrinia nubilalis) in Hungary


Abstract


Despite the fact that the pheromone structure and composition of the European corn borer (Ostrinia nubilalis) was identified in the early 1970s, an effective pheromone-based monitoring method of this species has not been established yet in Hungary. The aim of this study was to find an optimal monitoring strategy for this economically important pest using pheromone traps. We compared three trap designs, five ratios and four doses of the earlier identified pheromone components in three different locations in Hungary. In the first year there was no significant difference between the delta and the cone traps as both were able to catch males in sufficient numbers. How- ever, in the second year the cone traps captured significantly more males. In a comparison of the different ratios of the two pheromone components, our results demonstrate that the usage of 97:3 Z:E [97% (Z)11-tetradecenyl acetate and 3% (E)11-tetradecenyl acetate] ratio attracted the highest number of males. Therefore, we suggest that the Z pheromone strain exists in the three monitored regions. In the experiment, where the different doses were compared, there was no significant difference in the number of males caught. In 2015, the flight dynamics of the species showed that males start to fly in the beginning of June and the highest flight peak occurs in mid June. Based on our results we conclude that in Hungary the pheromone traps are able to attract and monitor European corn borer males using the appropriate trap design, dose and ratio under field conditions.

Keywords

Ostrinia nubilalis, European corn borer, pheromone, trap design, monitoring

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Maydica - A journal devoted to maize and allied species

ISSN: 2279-8013