Biotic potential and reproductive parameters of Spodoptera dolichos (Lepidoptera: Noctuidae) in the laboratory

Authors

Débora G. Montezano, University of Nebraska-LincolnFollow
Daniel R. Sosa-Gómez, Embrapa Soja
Silvana L. Paula-Moraes, Embrapa CerradosFollow
Vânia F. Roque-Specht, Universidade de Brasília
Edegar Fronza, Universidade de Caxias do Sul
Neiva M. Barros, Universidade de Caxias do Sul
Alexandre Specht, Embrapa CerradosFollow

Document Type

Article

Date of this Version

12-2015

Citation

ZOOLOGIA 32 (6): 485–491, December 2015. http://dx.doi.org/10.1590/S1984-46702015000600008

Comments

All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY.

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 (λ) of 1.142 per day. These results are compared with other species from Spodoptera and their relevance for management strategies of S. dolichos.