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Biotic Potential

The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform

Alexandre Specht – 1st expert on this subject based on the ideXlab platform

  • Biotic Potential and reproductive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory
    Revista Brasileira de Entomologia, 2020
    Co-Authors: Débora Goulart Montezano, Alexandre Specht, Daniel Ricardo Sosa-gómez, Vânia Ferreira Roque-specht, Neiva Monteiro De Barros

    Abstract:

    Biotic Potential and reprodutcive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory: This study aimed to evaluate the Biotic Potential and reproductive parameters of Spodoptera eridania (Stoll, 1782) under controlled conditions (25 ± 1ºC, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity and fertility of 15 couples was evaluated. The longevity of females (10.80 days) was not significantly higher than those of males (9.27 days). The mean durations of the pre, post and oviposition periods were 2.067, 0.600 and 8.133 days, respectively. The mean fecundity per female was 1,398 eggs and the mean fertility was 1,367.50 larvae. On average, females copulated 1.133 times. A strong positive correlation was observed between the number of mating and fecundity (r = 0.881, P

  • Biotic Potential and reproductive parameters of spodoptera frugiperda j e smith 1797 lepidoptera noctuidae
    The Journal of Agricultural Science, 2019
    Co-Authors: Débora Goulart Montezano, Alexandre Specht, D R Sosagomez, Vânia F Roquespecht, J V Malaquias, Silvana Vieira De Paulamoraes, Julie A Peterson, Thomas E Hunt

    Abstract:

    The fall armyworm, Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), a native to the Americas and recently reported in Africa, Germany, the Netherlands and India, is a significant pest of many crop species. Although a widespread and important pest, information on its biology and development are incomplete and require detailed study. In this study, the Biotic Potential and reproductive parameters of S. frugiperda were evaluated under controlled conditions (25±1 °C, 70±10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 30 pairs were evaluated. The longevity of females (10.87 days) was not significantly different from that of males (10.90 days). The mean durations of the pre-, post- and oviposition periods were 2.63, 0.53 and 7.70 days, respectively. The mean fecundity was 2,370.66 eggs per female and mean fertility was 2,309.03 larvae per female. On average, a female copulated 1.6 times. The Biotic Potential of S. frugiperda was estimated at 2.086 × 1029 individuals/female/year. The net reproductive rate (Ro) was 1,079.73 times per generation and the mean generation time (T) was 32.00 days. The intrinsic rate of increase (rm) was 0.22, with a finite rate of increase (λ) of 1.24 per day. This study evaluates and describes the biological parameters of S. frugiperda with special emphasis on its Biotic Potential and reproductive parameters. This information will improve the development of integrated pest management (IPM) and insect resistance management (IRM) for this species.

  • Biotic Potential and reproductive parameters of spodoptera cosmioides walker lepidoptera noctuidae in the laboratory
    Brazilian Journal of Biology, 2019
    Co-Authors: Alexandre Specht, Vânia F Roquespecht

    Abstract:

    : In this study we evaluate the Biotic Potential and reproductive parameters of Spodoptera cosmioides (Walker, 1858) under controlled conditions (25 ± 1 °C, 70 ± 10% RH and 14 hour photophase). Females, on average, (14.433 days) did not live significantly longer than their male counterparts (13.100 days). The mean durations of the pre-oviposition, oviposition and post-oviposition periods were 2.767, 10.600 and 1.067 days, respectively. The mean fecundity of females was 5,073.533 eggs and the mean fertility was 5,021.027 larvae. On average, females copulated 1.167 times. Fecundity was positively correlated with the number of copulations (r = 0.583, P <0.001). The number of copulations, however, was negatively correlated whit the duration of the pre-oviposition (r = -0.560, P = 0.007) and oviposition (r = -0.479, P = 0.048) periods, and overall longevity (r = -0.512, P = 0.031). The Biotic Potential was estimated at 6.547 x 1021 individuals/female/year. The net reproductive rate (Ro) was 2,193.722 times per generation and the mean generation time (T) was 46.407 days. The intrinsic rate of increase (rm) was 0.166, with a finite rate of increase (λ) of 1.180, per week.

Débora Goulart Montezano – 2nd expert on this subject based on the ideXlab platform

  • Biotic Potential and reproductive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory
    Revista Brasileira de Entomologia, 2020
    Co-Authors: Débora Goulart Montezano, Alexandre Specht, Daniel Ricardo Sosa-gómez, Vânia Ferreira Roque-specht, Neiva Monteiro De Barros

    Abstract:

    Biotic Potential and reprodutcive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory: This study aimed to evaluate the Biotic Potential and reproductive parameters of Spodoptera eridania (Stoll, 1782) under controlled conditions (25 ± 1ºC, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity and fertility of 15 couples was evaluated. The longevity of females (10.80 days) was not significantly higher than those of males (9.27 days). The mean durations of the pre, post and oviposition periods were 2.067, 0.600 and 8.133 days, respectively. The mean fecundity per female was 1,398 eggs and the mean fertility was 1,367.50 larvae. On average, females copulated 1.133 times. A strong positive correlation was observed between the number of mating and fecundity (r = 0.881, P

  • Biotic Potential and reproductive parameters of spodoptera frugiperda j e smith 1797 lepidoptera noctuidae
    The Journal of Agricultural Science, 2019
    Co-Authors: Débora Goulart Montezano, Alexandre Specht, D R Sosagomez, Vânia F Roquespecht, J V Malaquias, Silvana Vieira De Paulamoraes, Julie A Peterson, Thomas E Hunt

    Abstract:

    The fall armyworm, Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), a native to the Americas and recently reported in Africa, Germany, the Netherlands and India, is a significant pest of many crop species. Although a widespread and important pest, information on its biology and development are incomplete and require detailed study. In this study, the Biotic Potential and reproductive parameters of S. frugiperda were evaluated under controlled conditions (25±1 °C, 70±10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 30 pairs were evaluated. The longevity of females (10.87 days) was not significantly different from that of males (10.90 days). The mean durations of the pre-, post- and oviposition periods were 2.63, 0.53 and 7.70 days, respectively. The mean fecundity was 2,370.66 eggs per female and mean fertility was 2,309.03 larvae per female. On average, a female copulated 1.6 times. The Biotic Potential of S. frugiperda was estimated at 2.086 × 1029 individuals/female/year. The net reproductive rate (Ro) was 1,079.73 times per generation and the mean generation time (T) was 32.00 days. The intrinsic rate of increase (rm) was 0.22, with a finite rate of increase (λ) of 1.24 per day. This study evaluates and describes the biological parameters of S. frugiperda with special emphasis on its Biotic Potential and reproductive parameters. This information will improve the development of integrated pest management (IPM) and insect resistance management (IRM) for this species.

  • Biotic Potential and reproductive parameters of spodoptera dolichos lepidoptera noctuidae in the laboratory
    Revista Brasileira De Entomologia, 2015
    Co-Authors: Débora Goulart Montezano, D R Sosagomez, Vânia F Roquespecht, Silvana Vieira De Paulamoraes, Edegar Fronza, Neiva Monteiro De Barros, Alexandre Specht

    Abstract:

    The Biotic Potential and reproductive parameters of Spodoptera dolichos (Fabricius, 1794) were evaluated under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 25 couples were evaluated. The longevity of females (12.9 days) was not significantly different than that of males (12.4 days). The mean durations of the pre-, post- and oviposition periods were 3.0, 0.4 and 10.4 days, respectively. The mean fecundity was 4,086.0 eggs per female and mean fertility was 3,557.8 larvae per female. On average, a female copulated 1.4 times. The Biotic Potential of S. dolichos was estimated at 7.138 x 1018 individuals/female/year. The net reproductive rate (Ro) was 1,711.98 times per generation and the mean generation time (T) was 56.19 days. The intrinsic rate of increase (rm) was 0.133, with a finite rate of increase (l) of 1.142 per day. These results are compared with other species from Spodoptera and their relevance for management strategies of S. dolichos.

Vânia F Roquespecht – 3rd expert on this subject based on the ideXlab platform

  • Biotic Potential and reproductive parameters of spodoptera frugiperda j e smith 1797 lepidoptera noctuidae
    The Journal of Agricultural Science, 2019
    Co-Authors: Débora Goulart Montezano, Alexandre Specht, D R Sosagomez, Vânia F Roquespecht, J V Malaquias, Silvana Vieira De Paulamoraes, Julie A Peterson, Thomas E Hunt

    Abstract:

    The fall armyworm, Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), a native to the Americas and recently reported in Africa, Germany, the Netherlands and India, is a significant pest of many crop species. Although a widespread and important pest, information on its biology and development are incomplete and require detailed study. In this study, the Biotic Potential and reproductive parameters of S. frugiperda were evaluated under controlled conditions (25±1 °C, 70±10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 30 pairs were evaluated. The longevity of females (10.87 days) was not significantly different from that of males (10.90 days). The mean durations of the pre-, post- and oviposition periods were 2.63, 0.53 and 7.70 days, respectively. The mean fecundity was 2,370.66 eggs per female and mean fertility was 2,309.03 larvae per female. On average, a female copulated 1.6 times. The Biotic Potential of S. frugiperda was estimated at 2.086 × 1029 individuals/female/year. The net reproductive rate (Ro) was 1,079.73 times per generation and the mean generation time (T) was 32.00 days. The intrinsic rate of increase (rm) was 0.22, with a finite rate of increase (λ) of 1.24 per day. This study evaluates and describes the biological parameters of S. frugiperda with special emphasis on its Biotic Potential and reproductive parameters. This information will improve the development of integrated pest management (IPM) and insect resistance management (IRM) for this species.

  • Biotic Potential and reproductive parameters of spodoptera cosmioides walker lepidoptera noctuidae in the laboratory
    Brazilian Journal of Biology, 2019
    Co-Authors: Alexandre Specht, Vânia F Roquespecht

    Abstract:

    : In this study we evaluate the Biotic Potential and reproductive parameters of Spodoptera cosmioides (Walker, 1858) under controlled conditions (25 ± 1 °C, 70 ± 10% RH and 14 hour photophase). Females, on average, (14.433 days) did not live significantly longer than their male counterparts (13.100 days). The mean durations of the pre-oviposition, oviposition and post-oviposition periods were 2.767, 10.600 and 1.067 days, respectively. The mean fecundity of females was 5,073.533 eggs and the mean fertility was 5,021.027 larvae. On average, females copulated 1.167 times. Fecundity was positively correlated with the number of copulations (r = 0.583, P <0.001). The number of copulations, however, was negatively correlated whit the duration of the pre-oviposition (r = -0.560, P = 0.007) and oviposition (r = -0.479, P = 0.048) periods, and overall longevity (r = -0.512, P = 0.031). The Biotic Potential was estimated at 6.547 x 1021 individuals/female/year. The net reproductive rate (Ro) was 2,193.722 times per generation and the mean generation time (T) was 46.407 days. The intrinsic rate of increase (rm) was 0.166, with a finite rate of increase (λ) of 1.180, per week.

  • Biotic Potential and life tables of chrysodeixis includens lepidoptera noctuidae rachiplusia nu and trichoplusia ni on soybean and forage turnip
    Journal of Insect Science, 2019
    Co-Authors: Alexandre Specht, D R Sosagomez, Vânia F Roquespecht, Eduardo Valduga, Felipe Gonzatti, Sabrina Maurer Schuh, Eduardo Carneiro

    Abstract:

    : Loopers such as Chrysodeixis includens (Walker), Rachiplusia nu (Guenee), and Trichoplusia ni (Hubner) are important defoliators in soybean, sunflower, and crucifer crops, respectively, in countries of the Americas. The Biotic Potential of these polyphagous species of Plusiinae was comparatively examined considering crop rotation and succession scenarios in which crucifer crops are cultivated during or after Brazilian winter. All the species developed and reproduced on soybean (BRS 133 Embrapa) and forage turnip (Cati AL 1000, Wolf Seeds do Brasil). The development of C. includens was similar on both host plants. The survival of R. nu was lower on forage turnip than on soybean. In contrast, T. ni performance (survival, fecundity, pupal weight) was better on forage turnip than on soybean. This suggests that in crop rotation and succession scenarios of soybean after brassicacea, C. includens is likely to have a higher number of generations per year and could be Potentially more harmful.