Reproductive and developmental parameters of Aenasius bambawalei (Hymenoptera: Encyrtidae) as affected by temperature

Joodaki, Razieh; Zandi Sohani, Nooshin; Zarghami, Sara; Yarahmadi, Fatemeh

doi:10.48311/jcp.2020.1507

Reproductive and developmental parameters of Aenasius bambawalei (Hymenoptera: Encyrtidae) as affected by temperature

https://doi.org/10.48311/jcp.2020.1507

Volume 9, Issue 4
December 2020

Pages 637-649

Document Type : Original Research

Authors

R. Joodaki ¹

N. Zandi Sohani ¹

S. Zarghami ²

F. Yarahmadi ¹

¹ Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.

² Date Palm and Tropical Fruits Research Center, Horticultural Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahwaz, Iran.

Abstract

The life table parameters of the parasitoid wasp, Aenasius bambawalei Hayat (Hym.: Encyrtidae) were studied at 25, 30, and 35 °C, 65 ± 5% R. H. and 14L: 10D h. Third instar nymphs of Pseudococcus solenopsis Tinesly (Hem.: Pseudococcidae) were used as host for the wasp. Adult longevity and preoviposition period of female wasps were assessed and the raw data were analyzed using the age-stage, two-sex life table. According to the results, the total preovipostion period of females was 17 days at 25 °C and decreased to 13.07 days at 35 °C. The highest and lowest longevity was recorded for females at 25 °C (40.12 days) and males at 35 °C (3.71 days), respectively. The intrinsic rates of increase (r) of A. bambawalei were 0.1192, 0.1599, 0.2142 d^-1 at 25, 30 and 35 °C, respectively. The net reproductive rate (R₀) was calculated to be 38.04, 55.30, and 81.22 eggs/individual at 25, 30 and 35 °C, respectively. The mean generation time (T) of A. bambawalei ranged from 20.52 days at 35 °C to 30.52 days at 25 °C. Our results suggested that A. bambawalei may be a more efficient biological control agent for P. solenopsis at 35 °C than at 25 and 30 °C.

Keywords

Biological control

Chalcidoidea

Life table

mealybug

parasitism

20.1001.1.22519041.2020.9.4.2.5

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