Abstract
The present study evaluated the effect of overwintered adult density and egg and adult parasitism rates on the new-generation population densities of the Sunn Pest (Eurygaster integriceps Put.) under field conditions. We quantified the abundance of overwintered adult densities and egg and adult parasitism rates in 20 one-ha unsprayed wheat fields in southeastern Turkey to assess their impact on nymphal instars, plus new-generation adult densities. The number of overwintered adults per square meter and the percent of egg parasitism rates were positively and negatively correlated with new-generation densities of the Sunn Pest, respectively. The results of multiple regression analysis produced the equation Y = 15.037 + 8.287 OW (overwintered adult) − 0.235 egg PR (parasitism rate). The findings suggest that the egg parasitoids may suppress nymphal instars plus new-generation adult densities of the Sunn Pest. The findings also suggest that the present formula can be used to determine the spraying areas in which densities reach economic threshold for the integrated Sunn Pest management program in wheat fields in Turkey.
Similar content being viewed by others
References
Al-Izzi MAJ, Amin AM, Al-Assadi HS (2007) Role of biocontrol agents in decreasing population of the Sunn Pest in Northern Iraq. In: Parker BL, Skinner M, Bouhssini M, Kumari SG (eds) Sunn Pest management: a decade of progress 1994–2004. Arab Society for Plant Protection, Beirut, pp 265–271
Anonymous (2004) Technical instructions for plant protection. General Directorate of Protection and Control, the Ministry of Agriculture and Rural Affairs, Ankara, p 291
Canhilal R, Kutuk H, Kanat AD, Islamogul M, Haremein F, Bouhssini M (2005) Economic threshold for the Sunn Pest, Eurygaster integriceps Put, (Heteroptera: Scutelleridae), on wheat in southeastern Turkey. J Agric Urban Entomol 22:191–201
Dortbudak Y (1974) Investigation on Eurygaster species: identification, distribution and population densities in the Southeast Anatolia. General Directorate of Plant Protection and Agricultural Quarantine Research Trace Series, Ministry of Food-Agriculture and Livestock Farm, Ankara, p 40
Islamoglu M, Kornosor S (2003) Investigations on the adult parasitoids (Diptera: Tachinidae) of the Sunn Pest in overwintering site and wheat fields in Gaziantep and Kilis. Plant Prot Bull 43:99–110
Islamoglu M, Kornosor S (2004) Investigations on the effects of Sunn Pest adult parasitoids (Diptera: Tachinidae) on the fecundity of the Sunn Pest (Eurygaster integriceps Put.) (Heteroptera: Scutelleridae) in wheat fields of Gaziantep and Kilis Provinces. Plant Prot Bull 44:1–10
Kıvan M (1996) Research on the endoparasitoids of Eurygaster integriceps Put, (Heteroptera: Scutelleridae) and their effectiveness in Tekirdag (Turkey) province. Turk Entomol Derg 20:211–216
Kocak E, Kilincer N (2001) Trissolcus species (Hymenoptera: Scelionidae), parasitoids in the eggs of the Sunn Pest [Eurygaster spp. (Het.: Scutelleridae)], across Turkiye. Plant Prot Bull 41:167–181
Lodos N (1961) Observation on problems of the Sunn Pest (Eurygaster integriceps Put.) in Turkey, Iran and Iraq. Aegean University, Faculty of Agriculture Publications, No. 51, Izmir, Turkey
Lodos N (1982) Turkey entomology 2. General, practical and faunistic. Aegean University Publications, No. 429, Izmir, Turkey
Memisoglu H, Ozer M (1992) Investigation on overwintering position of cereal bug, Eurygaster maura L. (Heteroptera: Scutelleridae) in Ankara province. In: Proceedings of 2nd national entomology congress of Turkey, 28–31 January 1992, Adana, Turkey
Oncuer C, Kivan M (1995) Determination and distribution of Eurygaster species, and biology and natural enemies of Eurygaster integriceps Put, (Heteroptera: Scutelleridae) in Tekirdag and surroundings. Turk J Agric For 19:223–230
Simsek N, Sezer C (1985) Previous studies on the egg and nymph population of the Sunn Pest (Eurygaster integriceps Put.) with its damage on wheat in Hatay province. Plant Prot Bull 25:30–48
Simsek Z, Yasarakinci N (1986) The factors affecting the activity of the egg parasitoids (Trissolcus spp.) of the Sunn Pest in the South-eastern Anatolia. In: Proceedings of 1st national biological control congress, 12–14 February 1986, Adana, Turkey
Simsek Z, Yasarakinci N, Kiran E (1989) Studies on the forecasting and warning system of the Sunn Pest (Eurygaster integriceps Put.) in eastern and southeastern Anatolia. In: Proceedings of international symposium on forecasting and warning in plant protection, 6–8 November 1989, Izmir, Turkey
Simsek N, Gullu M, Yasarbas M (1994) Investigation on natural enemies of the Sunn Pest (Eurygaster integriceps Put.) and their effectiveness in the Mediterranean Region. In: Proceedings of 3rd national biological control congress, 25–28 January 1994, Izmir, Turkey
Yuksel M (1968) Investigation on distribution, biology, epidemiology, and damage of the Sunn Pest (Eurygaster integriceps Put.) in the South and Southeast Anatolia Region of Turkey. In: Publications of General Directorate of Plant Protection and Agricultural Quarantine, the Ministry of Agriculture, No. 46
Acknowledgments
We thank Ramazan Yetis of Adana Plant Protection Research Institute for his help in field work, Prof. Dr. Hasan Rustu Kutlu and Prof. Dr. Murat Gorgulu of Cukurova University for advice on statistical analysis of our data, and Prof. Dr. Scott D. Costa of the University of Vermont and Prof. Dr. Peter H. Adler of Clemson University for reviewing our manuscript.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kutuk, H., Canhilal, R., Islamoglu, M. et al. Predicting the number of nymphal instars plus new-generation adults of the Sunn Pest from overwintered adult densities and parasitism rates. J Pest Sci 83, 21–25 (2010). https://doi.org/10.1007/s10340-009-0264-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10340-009-0264-y