Papers | Boln. Asoc. esp. Ent. 21 (Supl.): 23-29 | 1997
Manipulation of Praon populations with synthetic aphid sex pheromones for the control of cereal aphids
R.L¡lley, J.Hardie & L.J. Wadhams
ABSTRACT
An aphid sex pheromone, (+)-(4aiS´,7¿´,7a7?)-nepetalactone, acts as a kairomone for aphid parasitoids of the genus Praon. The effect of nepetalactone on levéis of parasitism by Praon spp. was investigated during the summers of 1993 and 1994. Barley seedlings infested with larvae of the English grain aphid, Siíobiotí avénete (F.), were placed in the fíeld with or without an attached pheromone source. The presence of nepetalactone increased the proportion of aphids parasitised compared to aphids on plañís where nepetalactone was absent. The application of nepetalactone in aphid control is considered.
KEYWORDS
Aphid, fíeld, kairomone, parasitoids, Praon, semiochemical.
