Attraction of Chelonus insularis to host and host habitat volatiles during the search of Spodoptera frugiperda eggs
Periodo de realización: 1900/01/01 al 2020/01/01
Tipo: Artículo científico
Lugar(es) de estudio: Tapachula de Córdova y Ordoñez, Chis., México
Resumen: "Egg parasitoids use different strategies than do larval parasitoids to locate hosts. The wasp Chelonus insularis
Cresson is a key egg parasitoid of the fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), one of the main
insect pests of maize (Zea mays L.). Using a Y-glass tube olfactometer, in this study we determined the roles of
chemical cues from host and host habitats used by C. insularis when they search for FAW eggs. We found that C.
insularis females were attracted to volatiles emitted by host egg masses, host females (i.e., sex pheromone), and
maize seedlings with and without FAW eggs. The responses of the parasitoids to host and maize seedling volatiles
increased after their first oviposition experience, making it possible for females to discriminate between maize
seedlings with and without FAW eggs. The information generated in this study may be useful in the development
of future biological control programs of S. frugiperda using C. insularis in either augmentation or conservation
approaches."