Identification and Field Evaluation of a Sex Pheromone of the European Pine M oth

The principal component o f the fem ale sex pherom one of the European pine m oth Dendrolimus p in i L. (Lasiocam pidae) was identified as (Z ,E )-5 ,7-dodecadienal by capillary gas chrom atography, mass spectrom etry, single receptor analyses, and field trapping tests. T raps initially baited with 1000 ng o f (Z ,£)-5 ,7-dodecadienal (> 9 9 % ZE ) effectively m onitored low D. p in i populations over 6 weeks without rebaiting. C aptures d isappeared upon addition of ^ 1% of either (£ ,Z )-5 ,7 -dodecad iena l or (Z ,£)-5,7-dodecadienyl acetate, the key stim ulan ts for additional receptor cell types located in m ale antennal h a ir sensilla.