Effects of gamma radiation on the reproduction biology and mating competitiveness of citrus leafminer Phyllocnistis citrella Stainton

Effect of gamma irradiation on F1 generation and competitive ability of Phyllocnistis citrella and Ostrinia nubilalis, and evaluation of the sterile insect release ratio on plant infestation in field cages

“…F1 progeny from irradiated male parents were less fertile than their irradiated parents. A previous study showed that the doses of 450 and 300 Gy induced sterility in male and female CLM if irradiated as 5‐day‐old pupae (Osouli & Atapour, 2018). European corn borer parental generation sterility occurred if 5‐day‐old female and male pupae were irradiated with doses higher than 300 and 350 Gy, respectively (Osouli et al, 2020).…”

“…In previous studies, the effect of radiation on the competitiveness of male CLM moths emerging from irradiated pupae with doses of 200–400 Gy has been evaluated. Fried's CV ranged from 0.29 to 0.62 at ratios from 1:1:1 to 4:1:1 (the highest ratio examined) when pupae were irradiated with 400 Gy (Osouli & Atapour, 2018). This value reached 0.79 at the same dose with higher irradiated male ratio (5:1:1) in the present study.…”

“…The effect of doses of gamma radiation on the mating competitiveness of the irradiated male (as 5‐day‐old pupae) and F1 male progeny from irradiated male parents in various ratios was evaluated at 1:1:1, 2:1:1, and 5:1:1 (irradiated/F1 male: normal male: normal female, respectively) compared with 0:1:1 and 1:0:1 as controls. Doses of 400 and 350 Gy as almost complete sterility doses of gamma radiation were used for irradiation of male pupae of CLM and ECB, respectively (Osouli & Atapour, 2018; Osouli et al, 2020). The sub‐sterilizing doses of 150 and 200 Gy were also used for irradiation of male parents of CLM, and 90, 120, and 150 Gy for male parents of ECB.…”

“…Our previous studies indicated that doses higher than 300 and 350 Gy would be required for inducing sterility in the female and male of ECB, and 300 and 400 Gy in the female and male of CLM, respectively, whereby few or no progeny is expected from the irradiated pupae (Osouli & Atapour, 2018; Osouli et al, 2020). The objective of the present studies was the evaluation of productive performance and competitive ability of F1 progeny of both lepidopteran species in response to sub‐sterilizing gamma radiation doses.…”

Investigation of the life history and infestation of Phyllocnistis citrella (Lepidoptera: Gracillariidae) on four different hosts

“…In our previous studies, first, the life history of this pest on C. sinensis as a citrus host was investigated under different constant temperatures, and the results indicated an optimal temperature of 27°C (Atapour and Osouli 2017). In the next step, C. sinensis was used for the mass-rearing of P. citrella at 27°C to investigate the effects of gamma radiation on the life history and mating competitiveness of this pest (Osouli and Atapour 2018). A comparison of the results of our previous studies and that of others, such as Seraj (1999Seraj ( , 2013, Goane et al (2008), and Kalaitzaki et al (2011) who have studied the life history of this pest on other citrus hosts, led to the question of whether different hosts would affect the biological aspects of the pest and the possibility to introduce a more suitable host for the mass production of this pest.…”