Abstract
Through use of a recognition kairomone, the parasitoidTelenomus heliothidis Ashmead is induced to oviposit and successfully develops in nonhost eggs.T. heliothidis successfully develops in the eggs ofSpodoptera frugiperda (Smith) andPhthorimaea operculella Zeller, but fails to develop in eggs ofAnthonomus grandis Boheman. Both sexes of the parasitoid are produced from the nonhosts, and development time is the same as in a natural host such asHeliothis virescens F. The use of recognition kairomones could be of great use in artificial rearing of nongeneralist parasitoids suchT. heliothidis.
Résumé
L'emploi d'une kairomone de reconnaissance permet d'induire la ponte et d'obtenir éventuellement le développement deTelenomus heliothidis Ashmead dans des œufs d'espèces ne constituant pas de hôtes normaux de ce parasitoïde. Ainsi, à partir des œufs deSpodoptera frugiperda (Smith) ou dePhtorimaea operculella Zeller, la production de descendants adultes des 2 sexes deT. heliothidis est assurée dans un délai identique à celui constaté avec l'hôte naturelHeliothis virescens F. La ponte a également lieu dans les œufs d'Anthonomus grandis Boheman, mais le développement ultérieur échoue. L'utilisation de kairomones de reconnaissance peut être d'un grand intérêt pour l'élevage de parasitoïdes spécifiques telT. heliothidis.
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Strand, M.R., Vinson, S.B. Stimulation of oviposition and successful rearing ofTelenomus heliothidis [Hym.: Scelionidae] on nonhosts by use of a host-recognition kairomone. Entomophaga 27, 365–370 (1982). https://doi.org/10.1007/BF02372058
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DOI: https://doi.org/10.1007/BF02372058