Collecting, identifying and selecting a native strain of egg parasitoid wasps, Trichogramma for biological control of the codling moth, Cydia pomonella in Damavand region

Document Type : Research Paper

Authors

1 Assistant Professor, Iraian Research Institute of Plant Protection, Agricultural Research Education, and Extension Organization (AREEO), Tehran, Iran

2 Researcher, Iraian Research Institute of Plant Protection, Agricultural Research Education, and Extension Organization (AREEO), Tehran, Iran

Abstract

In order to select a suitable species of the trichogrammatid wasps for biological control of the codling moth, some of the trichogramatid wasps were collected and identified from the apple orchards located in north east of Tehran province by direct sampling on the codling moth eggs and using egg traps. Furthermore, laboratory experiments were carried out according to completely randomized design for evaluation of fecundity and longevity of the collected wasps at temperatures 22, 24, and 26°C by using the eggs of Sitotroga cerealla as factitous host. Moreover, host acceptance of the codling moth eggs by the wasps was examined statistically after five generation rearing on factitious host. Three species of the trichogrammatid wasps, Trichogramma brassicae, T. pintoi, and T. embryophagum, were collected and identified from the studied apple orchards located in Damavand and Rodehen region. According to the obtained results, fecundity of the evaluated wasps at temperatures 24 and 26°C were higher statistically than temperature 22°C. The highest values of the fecundity of T. pintoi and T. embryophagum were 30.96 and 26.46 eggs/female at studied time interval, respectively. In order to examine host acceptance level of the wasps, the percentage of the host eggs parasitism were determined as 73.64% and 17.70%, by T. embryophagum and T. pintoi, respectively. Considering all the obtained results, collected native strain of T. embryophagum was introduced as a suitable choice for extension of the biological control program aginst the codling moth in apple orchards located in study region.

Keywords

References

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Iranian Journal of Plant Protection Science
Volume 46, Issue 1 - Serial Number 1
Spring & Summer
May 2015
Pages 1-8

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History

  • Receive Date: 26 January 2015
  • Revise Date: 23 June 2015
  • Accept Date: 14 July 2015

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