« Previous AbstractAnt-caterpillar antagonism at the community level: interhabitat variation of tritrophic interactions in a neotropical savanna    Next AbstractMAT alpha 1 can mediate gene activation by a-mating factor »

Insects

Title:		Effect of Irradiation on Reproduction of Female Spodoptera litura (Fabr.) (Lepidoptera: Noctuidae) in Relation to the Inherited Sterility Technique
Author(s):		Sengupta M; Vimal N; Angmo N; Seth RK;
Address:		"Applied Entomology and Radiation Biology Lab, Department of Zoology, University of Delhi, Delhi 110007, India"
Journal Title:		Insects
Year:		2022
Volume:		20221002
Issue:		10
Page Number:		-
DOI:		10.3390/insects13100898
ISSN/ISBN:		2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking)
Abstract:		"Radiobiological investigations on the reproductive behavior of female Spodoptera litura (Fabr.) were conducted with the aim of determining the suitable radio-sterilizing dose for females in order to release them along with sub-sterile males for effective implementation of the Inherited Sterility technique against this pest. Calling and copulation duration significantly increased, while mating success, oviposition, fertility and longevity significantly decreased with increasing radiation dose (100-200 Gy) compared to control. In view of the effect of irradiation on mating behavior and reproductive viability of female S. litura, 130 Gy was identified as a suitable radio-sterilization dose. Further molecular studies were conducted to corroborate this dose for female sterilization, along with a higher dose of 200 Gy in order to validate the gradational response of ionizing radiation. GC-MS analysis indicated decreased sex pheromone titer at 130 Gy, which was more pronounced at 200 Gy. Pheromone-associated genes, PBAN and PBAN-R showed decreased expression at 130 Gy, and were drastically reduced at 200 Gy. The fertility-related Vg gene also showed a negative correlation with radiation exposure. Based on these radiation responses of female S. litura, 130 Gy might be considered a suitable dose for complete female sterility and its inclusion in sterile insect programs against S. litura"
Keywords:		Inherited Sterility Technique Pban Pban-r Spodoptera litura Vg radio-genetic pest control tactics radio-sterilized female moth sex pheromone;
Notes:		"PubMed-not-MEDLINESengupta, Madhumita Vimal, Neha Angmo, Nilza Seth, Rakesh Kumar eng 20565/RB/International Atomic Energy Agency/ Switzerland 2022/10/28 Insects. 2022 Oct 2; 13(10):898. doi: 10.3390/insects13100898"