Identification of α-tocopherol and α-tocopheryl acetate from the cuticle of soybean pods armyworm (Spodoptera cosmioides).
The chemical composition of the soybean pods armyworm Spodoptera cosmioides (Walker, 1858) (Lepidoptera: Noctuidae) and Anticarsia gemmatalis Hübner, 1818 (Lepidoptera: Erebidae) larval cuticles was evaluated using gas chromatography coupled to a mass detector (GC-MS). Among the usual lipids found in the insect cuticle, α-tocopherol and α-tocopheryl acetate were also isolated from S. cosmioides. On the other hand, no vitamin E derivative was found in A. gemmatalis exuvia. This is the first report of vitamin E occurrence in the insect's cuticle.
a Laboratório de Controle de Pragas, Instituto de Biotecnologia - Centro de Ciências Agrárias e Biológicas, Universidade de Caxias do Sul, Rua Francisco Getulio Vargas , Caixa Postal 1352, CEP 95070-560 , Caxias do Sul, Rio Gre do Sul, Brazil.
Edegar
E
Fronza
Ignacio
I
Migues
Alexandre
A
Specht
Neiva Monteiro
NM
de Barros
Horacio
H
Heinzen
D000818:Animals; D008401:Gas Chromatography-Mass Spectrometry; D013025:Glycine max; D018411:Spodoptera / Q000737:chemistry*; D024502:alpha-Tocopherol / Q000032:analysis*
D024502:alpha-Tocopherol