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

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 <0.001), as well as a strong negative correlation between the number of copulations and the duration of the pre-oviposition period (r = -0.762, p = 0.002), and longevity (r = -0.788, p = 0.001). The biotic potential of S. albula was estimated at 8.768 x 10 22 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.

Developmental Parameters of Spodoptera frugiperda (Lepidoptera: Noctuidae) Immature Stages Under Controlled and Standardized Conditions

“…for several crops of economic interest, this study compares the biology of the main representatives of Spodoptera occurring in the Americas, reared under the same conditions. This study complements previous contributions on the biology of immatures and adults of S. albula (Walker, 1857) (Montezano et al, 2013a(Montezano et al, , 2014a, S. eridania (Stoll, 1782) (Montezano, Specht, Sosa-Gómez, Roque-Specht, & Barros, 2013b, 2014b, S. dolichos (Fabricius, 1794) (Montezano et al, 2015a(Montezano et al, , 2015b and S. cosmioides (Walker, 1858) reared under the same conditions. Montezano et al (2013a) employed and validated a methodology that incorporated detailed rearing procedures not made by others studies, e.g., a larger number of neonates evaluated individually to adult emergence, including a more complete detailing of biological parameters, with minimal interference in its development.…”

Immature stages of Spodoptera cosmioides (Lepidoptera: Noctuidae): developmental parameters and host plants

“…This study complements previous contributions on the biology of immatures and adults of S. albula (Walker, 1857) (Montezano et al 2013a, 2014a), S. eridania (Stoll, 1782 (Montezano et al 2013b, 2014b) and S. dolichos (Fabricius, 1794 (Montezano et al 2015a(Montezano et al , 2015b under the same conditions. Following the guidelines of the studies above mentioned, here the biology of S. cosmioides is described in detail including information about their host plants.…”

“…The relatively high egg viability and fecundity values observed (Table 1) are common for Spodoptera species. Previous studies have documented that multiple mating in Spodoptera enhances their reproductive capacity, including fertility (kehat & gordon 1975, Sadek 2001, Sadek & anderSon 2007, BuSato et al 2008, Milano et al 2008, Montezano et al 2013b, 2014a, 2015b, SPeCht et al 2016. The incubation period of S. cosmioides was variable.…”

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

“…versus pre-oviposition, oviposition periods and female longevity (Figures 2-4), reinforces the need to account the spermatophore number in reproductive studies (e.g., Rogers and Marti Junior, 1997;Montezano et al, 2013bMontezano et al, , 2014aMontezano et al, , 2015.…”