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Microbial biopesticides affected age-stage life table of the tomato leaf miner, Tuta absoluta (Lepidoptera – Gelechiidae)

Article scientifique 2018 Anglais

Résumé

The tomato leaf miner, Tuta absoluta (Meyric), second instar larvae were exposed for 1 day to LC50 of Bacillus thuringiensis (Berliner) subsp. kurstaki or Beauveria bassiana (Balsamo) on treated tomato foliages. Treated larvae had the longest development period while non-treated larvae had the shortest development period. The highest survivorship (l x ) of adults was obtained by the non-treated larvae while the lowest survivorship was obtained by B. thuringiensis-treated larvae. The lowest age-specific fecundity (m x ) of females was obtained by individuals treated as second instar larvae with B. bassiana. The intrinsic rate of increase (r m ) reached its maximum with non-treated individuals while this value decreased to the minimum values with biopesticide-treated individuals. Therefore, development, survival, and reproduction of treated individuals were lower than those of non-treated individuals. The reproduction period and adult longevity were the shortest considering biopesticide-treated individuals. The highest and lowest net reproductive rates (R0) were recorded for non-treated and treated individuals, respectively. The mean generation time was increased with biopesticide-treated individuals.

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Younes, A., Zohdy, N., Fadl, H., Fathy, R. (2018). Microbial biopesticides affected age-stage life table of the tomato leaf miner, Tuta absoluta (Lepidoptera – Gelechiidae). https://doi.org/10.1186/s41938-017-0013-0

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Auteur(s)

Aly Younes Nawal Zohdy M. Zohdy H. A. A. A. Fadl Reham Fathy

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