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Functional responses of the egg parasitoid , Trichogramma evanescens (Westwood) (Hymenoptera: Trichogrammatidae) on Angoumois moth , Sitotroga cerealella (Oliver) (Lipedoptera: Gelechiidae) | ||
| Jornal of Al-Muthanna for Agricultural Sciences | ||
| Article 1, Volume 4, Issue 2, 2016, Pages 1-9 | ||
| Abstract | ||
| Laboratory studies was carried out at the laboratories of Science and Technology , Ministry of Sc – during 2015 – 2016 to evaluate the Functional responses of the egg parasitoid Trichogramma evanescens on the Angoumois moth , Sitotroga cerealella . Results showed That the T. evanescens follow the second type of a functional response which indicate that the Egg parasitoid negatively dependent on egg density of the Angoumois moth . Attack time and Attack coefficient were , 11.93 and 0.002 . Parasitism rates increased gradually by increasing eggs of the host , then it decreased as eggs density increased . Results also indicated a significant differences in the parasitism rates of T. evanescens on different moth egg ages , parasitism rates were , 65.3 , 51.6 , 33.7 and 29.4 % on host aged of 24 , 48 , 72 and 96 hours respectively . The use of this egg parasitoid in the biological control of the Angoumois moth , S. cerealella also discussed . | ||
| Keywords | ||
| Grain Moth S; cerealella; Eggs Parasitoid Trichogramma evanescens; Functional response; Biological Control; Iraq | ||
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