Immature stages of Spodoptera albula (Walker) (Lepidoptera: Noctuidae): Developmental parameters and host plants

Anais da Academia Brasileira de Ciências

DÉbora G. Montezano¹  Alexandre Specht¹  Tarciso M. Bortolin¹  Edegar Fronza¹  Daniel R. Sosa-gÓmez¹  VÂnia F. Roque-specht¹  PatrÍcia Pezzi¹  Priscila C. Luz¹  Neiva M. Barros¹ 

关键词: annual crop pest;    armyworm;    artificial diet;    development;    life cycle;    praga de culturas anuais;    lagartamilitar;    dieta artificial;    desenvolvimento;    ciclo de vida;   

DOI  :  10.1590/S0001-37652013000100013

来源: SciELO

【 摘 要 】

This study aimed to detail the temporal and morphological parameters of the immature stages of Spodoptera albula (Walker 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase) and to gather information about their larval host plants. For this purpose, a new rearing method and artificial diet was employed and validated. The viability of the egg, larval, pupal and pre-pupal stages was 94.54, 97.33, 93.84 and 92.34%, respectively. The average duration of the egg, larval, pupal and pre-pupal stages was 4.14, 16.37, 1.69, and 9.34 days, respectively. During the larval stage, 80.85% of females and 93.99% of males passed through six and remaining through seven instars, with significant larval protandry. The larvae that developed through six and seven instars exhibited a mean growth rate of 1.58 and 1.48, respectively. Fifty five host plant species belonging to 29 families are listed. The female pupae were significantly larger, exhibiting protogyny. Both the rearing methods as well as the larval diet proved adequate, providing more detailled observations of the biological cycle, especially the larval stage, and resulting in an overall survival of almost 80%.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License