Title: | "(Z)-5-tetradecen-1-ol: A secondary pheromone of the yellowheaded spruce sawfly, and its relationship to (Z)-10-nonadecenal" |
Author(s): | Bartelt RJ; Jones RL; Krick TP; |
Address: | "Department of Entomology, Fisheries, and Wildlife, University of Minnesota, 55108, St. Paul, Minnesota" |
ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
Abstract: | "The yellowheaded spruce sawfly,Pikonema alaskensis (Rohwer), was known to possess a potent secondary pheromone with the polarity of an alcohol, based on earlier studies with Florisil fractions. Purification of the 25% ether-hexane Florisil fraction (polarity as with alcohols) and the hydrolyzed 5% ether-hexane fraction (polarity as with esters) from 50,000 females yielded a total of ca 3mug of an active compound identified as (Z)-5-tetradecen-1-ol (Z5-14ratio OH). When added to 100 ng of (Z)-10-nonadecenal (Z10-19ratioAl), which behaves as the primary pheromone in this sawfly, 0.5 ng of syntheticZ5-14ratio OH caused an 8.8-fold increase in the greenhouse bioassay response, compared toZ10-19ratioAl alone.E5-14ratio OH caused a 2.8-fold increase. Only the combination ofZ5-14ratio OH andZ10-19ratio Al consistently elicited mating attempts among males. When Hercon(R) formulations ofZ5-14ratioOH andZ10-19ratio Al were used together to bait traps, catches were up to four times higher than for theZ10-19ratio Al alone, but this increase was seen only after emergence and mating activity in the field population were virtually complete. TheZ5-14ratio OH was inactive alone, and at higher levels it depressed trap catches toZ10-19ratio Al. The Hercon formulations ofZ5-14ratio 0H andZ10-19ratioAl together were as attractive as virgin females.Z10-19ratioAl alone and the (Z,Z)-9,19 hydrocarbon dienes (found in all females and able to oxidize in air to produceZ10-19ratioAl) were similar to mated females. ThusZ5-14ratio:OH accounted for the difference in attractiveness between virgin and mated females" |
Notes: | "PubMed-not-MEDLINEBartelt, R J Jones, R L Krick, T P eng 1983/09/01 J Chem Ecol. 1983 Sep; 9(9):1343-52. doi: 10.1007/BF00994803" |