1- Depaetment of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz 5166614888, Iran
2- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz 5166614888, Iran ,p.benamolaei@tabrizu.ac.ir
3- Tehran Agricultural and Natural Resources Research and Education Center, AREEO, Varamin 33716-35898, Iran
2- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz 5166614888, Iran ,
3- Tehran Agricultural and Natural Resources Research and Education Center, AREEO, Varamin 33716-35898, Iran
Abstract: (87 Views)
Trissolcus vassilievi (Mayr) (Hymenoptera: Scelionidae) is one of the most important egg parasitoids of the common sunn pest (CSP), Eurygaster integriceps Puton (Hemiptera: Scutelleridae) in Iran. In this study, the fitness of two populations of T. vassilievi was studied on two populations of hosts in terms of life history parameters. Two populations of T. vassilievi were selected: 1/ Tabriz (as a temperate area), and 2/ Varamin (as a subtropical area), as well as for CSP. Moreover, regarding that outcrossing between populations can produce progeny with superior characteristics, the progeny of reciprocal crosses between original populations also were examined on a single host. The crosses between the two populations caused 13.9-18.5% higher net fecundity than maternal populations which suggests fecundity to be a function of maternal phenotype. The intrinsic rate of increase showed minor differences among treatments which varied between 0.291±0.003 to 0.305±0.003. The partial advantage of the Varamin wasps over the Tabriz ones and the crosses over the original populations was obvious. Such differences may be used to obtain more efficient parasitoids in augmentation programs.
Keywords: : intrinsic rate of increase, life expectancy, net reproduction rate, parasitoid wasp, reciprocal crosses
Article Type: Original Research |
Subject:
Ecology and Biological Control
Received: 2024/02/17 | Accepted: 2024/01/1
Received: 2024/02/17 | Accepted: 2024/01/1
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