Ghaemmaghami, Ehsan, Fathipour, Yaghoub, Bagheri, Abdoolnabi, Talebi, Ali Asghar, Zalucki, Myron P. (2023). Tracking switching behavior of Trichogramma brassicae (Hymenoptera: Trichogrammatidae) over 45 generations. , 12(1), 29-42. doi: 10.48311/jcp.2023.1619
Ehsan Ghaemmaghami; Yaghoub Fathipour; Abdoolnabi Bagheri; Ali Asghar Talebi; Myron P. Zalucki. "Tracking switching behavior of Trichogramma brassicae (Hymenoptera: Trichogrammatidae) over 45 generations". , 12, 1, 2023, 29-42. doi: 10.48311/jcp.2023.1619
Ghaemmaghami, Ehsan, Fathipour, Yaghoub, Bagheri, Abdoolnabi, Talebi, Ali Asghar, Zalucki, Myron P. (2023). 'Tracking switching behavior of Trichogramma brassicae (Hymenoptera: Trichogrammatidae) over 45 generations', , 12(1), pp. 29-42. doi: 10.48311/jcp.2023.1619
Ghaemmaghami, Ehsan, Fathipour, Yaghoub, Bagheri, Abdoolnabi, Talebi, Ali Asghar, Zalucki, Myron P. Tracking switching behavior of Trichogramma brassicae (Hymenoptera: Trichogrammatidae) over 45 generations. , 2023; 12(1): 29-42. doi: 10.48311/jcp.2023.1619

Tracking switching behavior of Trichogramma brassicae (Hymenoptera: Trichogrammatidae) over 45 generations

Journal of Crop Protection
Article 3, Volume 12, Issue 1, 2023, Pages 29-42    PDF (949.27 K)
Document Type: Original Research
DOI: 10.48311/jcp.2023.1619
Authors
Ehsan Ghaemmaghami1; Yaghoub Fathipour* 1; Abdoolnabi Bagheri2; Ali Asghar Talebi1; Myron P. Zalucki3
1Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
2Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
3School of Biological Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia.
Abstract
The effects of long-term rearing of Trichogramma brassicae (Bezdenko) on host preference and switching behavior was examined when parasitizing two common factitious hosts, including Mediterranean flour moth (MFM), Ephestia kuehniella Zeller and Angoumois grain moth (AGM), Sitotroga cerealella (Olivier) over 45 generations. Both host species eggs were offered to the parasitoid over 24 h. Significantly more MFM eggs were parasitized in all generations, but a distinct negative switching behavior was found in all experiments. The parasitoid negatively switched from MFM when they became abundant compared to AGM and vice versa. The preference coefficient (c) estimated using Murdoch's index ranged from 2.056 (in G5) to 1.734 (in G45) for MFM and 0.486 (in G5) to 0.577 (in G45) for AGM. The linear regression indicated that despite preferring MFM, the intensity of the preference decreased over 45 generations. Negative switching behavior in T. brassicae may be advantageous for this species in controlling pests in given situations.

Keywords
Biological control; Foraging behavior; Host preference; mass rearing; negative switching; Trichogramma brassicae
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