Biotic potential, fertility and life table of Spodoptera albula (Walker) (Lepidoptera: Noctuidae), under controlled conditions

Authors

Débora G. Montezano, University of Nebraska-LincolnFollow
Alexandre Specht, Embrapa CerradosFollow
Daniel Ricardo Sosa-Gómez, Embrapa SojaFollow
Vânia F. Roque-Specht, Universidade de BrasíliaFollow
Tarciso M. Bortolin, Gravena - Pesquisa
Edegar Fronza, Universidade de Caxias do Sul
Patricia Pezzi, Universidade de Caxias do Sul
Priscila C. Luz, Universidade de Caxias do SulFollow
Neiva M. Barros, Universidade de Caxias do SulFollow

Document Type

Article

Date of this Version

2014

Citation

Anais da Academia Brasileira de Ciências (2014) 86(2): pp. 723-732.

Comments

Copyright 2014 the authors. Used by permission.

Abstract

This study aimed to evaluate the biotic potential, life table parameters and fertility of Spodoptera albula (Walker, 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photo phase). The longevity, pre, post and oviposition periods, fecundity and fertility of 13 couples were evaluated. The longevity of females (13.500 days) was significantly higher than those of males (11.154 days). The mean durations of the pre, post and oviposition periods were 2.615, 1.769 and 9.385 days, respectively. The mean fecundity was 1.417.69 eggs and mean fertility was 1.340.401 larvae, per female. On average, females copulated 1, 231 times. A strong positive correlation was observed between the number of copulations and fecundity (r = 0.847, p S. albula was estimated at 8.768 x 10²² individuals / female / year. The net reproductive rate (Ro) was 353,904 times per generation and the mean generation time (T) was 37.187 days. The intrinsic rate of increase (rm) was 1,105, with a finite rate of increase (λ) of 3,019.