Ghorbani, R., Seraj, A. A., Allahyari, H., Farrokhi, S. (2019). Functional Response of Trichogramma evanescens Parasitizing Tomato Leaf Miner, Tuta absoluta on Three Tomato Varieties. , 21(1), 117-127.
R. Ghorbani; A. A. Seraj; H. Allahyari; S. Farrokhi. "Functional Response of Trichogramma evanescens Parasitizing Tomato Leaf Miner, Tuta absoluta on Three Tomato Varieties". , 21, 1, 2019, 117-127.
Ghorbani, R., Seraj, A. A., Allahyari, H., Farrokhi, S. (2019). 'Functional Response of Trichogramma evanescens Parasitizing Tomato Leaf Miner, Tuta absoluta on Three Tomato Varieties', , 21(1), pp. 117-127.
Ghorbani, R., Seraj, A. A., Allahyari, H., Farrokhi, S. Functional Response of Trichogramma evanescens Parasitizing Tomato Leaf Miner, Tuta absoluta on Three Tomato Varieties. , 2019; 21(1): 117-127.

Functional Response of Trichogramma evanescens Parasitizing Tomato Leaf Miner, Tuta absoluta on Three Tomato Varieties

Journal of Agricultural Science and Technology
Article 10, Volume 21, Issue 1, 2019, Pages 117-127    PDF (540.46 K)
Authors
R. Ghorbani* 1; A. A. Seraj2; H. Allahyari3; S. Farrokhi4
1Department of Plant Protection Research, Lorestan Agricultural and Natural Resources Research and Education Center, AREEO, Khorramabad, Islamic Republic of Iran.
2Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahwaz, Ahvaz, Islamic Republic of IRAN.
3Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Islamic Republic of Iran.
4Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension Organization, AREEO, Tehran, Islamic Republic of Iran.
Abstract
The egg parasitoid, Trichogramma evanescens Westwood, is used for inundative releases in biological control programs against the tomato leaf miner, Tuta absoluta Meyrick, in agro-ecosystems. One of the most important host-parasitoid interactions is functional response that its type and parameters are affected by different factors including host plant characteristics. In this research, functional response of T. evanescens to different egg densities (2, 4, 8, 16, 32, and 64) of T. absoluta was investigated in a growth chamber (26±2°C, 50±10% RH, and 16:8 hours L:D photoperiod), on three varieties of tomato (Mobil, Riogrande, and Early Urbana-703). Type of functional response was determined by logistic regression and its parameters, i.e. searching efficiency and handling time, were calculated by nonlinear regression model using SAS software. Functional response of this parasitoid was type III on Mobil and Riogrande and type II on Early Urbana- 703. Searching efficiency (a) for each host density was 0.0368, 0.0736, 0.1472, 0.2944, 0.5888, and 1.1776 on Mobil, and 0.0374, 0.0748, 0.1469, 0.2992, 0.5984, and 1.1968 h-1 on Riogrande varieties, respectively. Also, on Early Urbana-703, the attack rate was 0.1045 h-1. The handling time was 1.0276, 1.1017, and 1.3289 hours with maximum parasitism of 23.3, 21.7, and 18.06 eggs on these varieties, respectively. It is suggested that physical structure of Early Urbana-703 variety may interfere with the parasitoid’s performance, resulting in an impaired searching efficiency and parasitism ability. Some applied aspects of the findings are discussed.
Keywords
Biological control; host density; Search rate; Tomato moth; Trichogrammatids
References
Statistics
Article View: 281
PDF Download: 107
Statistics
Number of Journals45
Number of Issues2,171
Number of Articles24,674
Article View24,451,815
PDF Download17,556,859