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19 July 2021 Host Deprivation Effects on the Functional Response and Parasitism Rate of Habrobracon hebetor (Hymenoptera: Braconidae) on Ephestia elutella (Lepidoptera: Pyralidae) in the Laboratory
Hou-Ding Ou, Remzi Atlihan, Xiu-Qin Wang, Hao-Xi Li, Guang-Jun Sun, Lan Wei, Bo Wang, Xiao-Fei Yu, Mao-Fa Yang
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Abstract

Habrobracon hebetor (Say) is an important biological control agent for lepidopteran pests of stored products. In this study, the age-specific functional response, paralysis rate, and parasitism rate of H. hebetor under different host deprivation treatments (PC: without host deprivation, used as the control, P1d: host deprivation, but the host was removed after 1 d contact, and PW: host deprivation from beginning) were evaluated at different larval densities (5, 10, 20, 40, and 80) of the Ephestia elutella (Hübner) at 28 ± 1°C, 75 ± 5% RH and 16:8 h L:D. Ages of parasitoid females used were 2, 5, 10, and 20 d old. The logistic regression results indicated that the functional response of H. hebetor females under different host deprivation treatments was type II. The longest handling time was observed in 20-d old females, while the shortest handling time and highest maximum attack rate (T/Th) were estimated at the age of 2 d in all treatments. The paralysis and parasitism rates of H. hebetor were the highest at 2, 5, and 10-d old in all treatments. The results of this study suggest that H. hebetor females up to 10-d old can be used as an efficient biological control agent against E. elutella. The data of this study can also be used to predict the efficacy of different aged H. hebetor females in controlling E. elutella populations.

© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Hou-Ding Ou, Remzi Atlihan, Xiu-Qin Wang, Hao-Xi Li, Guang-Jun Sun, Lan Wei, Bo Wang, Xiao-Fei Yu, and Mao-Fa Yang "Host Deprivation Effects on the Functional Response and Parasitism Rate of Habrobracon hebetor (Hymenoptera: Braconidae) on Ephestia elutella (Lepidoptera: Pyralidae) in the Laboratory," Journal of Economic Entomology 114(5), 2024-2031, (19 July 2021). https://doi.org/10.1093/jee/toab144
Received: 26 April 2021; Accepted: 18 June 2021; Published: 19 July 2021
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KEYWORDS
functional response
larval ectoparasitoid
paralysis rate
parasitism rate
tobacco moth
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