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Energy Reserve Compensating for Trade-Off Between Metabolic Resistance and Life History Traits in the Brown Planthopper (Hemiptera: Delphacidae).

Authors :
Fujii, Tomohisa
Sanada-Morimura, Sachiyo
Matsukura, Keiichiro
Chien, Ho Van
Cuong, Le Quoc
Loc, Phung Minh
Estoy, Gerardo F
Matsumura, Masaya
Source :
Journal of Economic Entomology; Aug2020, Vol. 113 Issue 4, p1963-1971, 9p
Publication Year :
2020

Abstract

Development of insecticide resistance often changes life history traits of insect pests, because metabolic detoxification of insecticides in insect bodies requires huge energetic reserves. The brown planthopper, Nilaparvata lugens (Stål), an important insect pest of rice crop in East and Southeast Asia, has developed strong resistance to imidacloprid from mid-2000s. The aim of this study was to examine the costs of life history traits and reveal changes in energy reserves with developing imidacloprid resistance. We compared the life history traits (survival time, fecundity, developmental time, and hatchability) and total lipid content between imidacloprid-resistant and imidacloprid-susceptible (control) brown planthopper strains. As compared to the control strains, adults' survival time of the resistant females was shorter, and their fecundity was lower; the other life history traits did not differ significantly between the resistant and control strains. As the results, net reproductive rates (R <subscript> 0 </subscript>) were lower in the resistant strains than in the susceptible strains. However, the amount of stored lipids was larger in resistant females than control ones. Our findings demonstrated a physiological trade-off between the development of imidacloprid resistance and the reproductive traits of brown planthopper. The imidacloprid-resistant strains are likely to store lipids for metabolic detoxification rather than consume them for reproduction. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00220493
Volume :
113
Issue :
4
Database :
Complementary Index
Journal :
Journal of Economic Entomology
Publication Type :
Academic Journal
Accession number :
145383722
Full Text :
https://doi.org/10.1093/jee/toaa120