| Title: | Male-produced aggregation pheromone ofCarpophilus obsoletus (Coleoptera: Nitidulidae) |
| Author(s): | Petroski RJ; Bartelt RJ; Vetter RS; |
| Address: | "Bioactive Constituents Research Group USDA Agricultural Research Service, National Center for Agricultural Utilization Research, 1815 N. University Street, 61604, Peoria, Illinois" |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "Males ofCarpophilus obsoletus Erichson produce an aggregation pheromone to which both sexes respond. The pheromone was identified by GC-MS as (2E,4E,6E,8E)-3,5,7-trimethyl-2,4,6,8-undecatetraene (1), which is also a minor constituent of the pheromone blends ofC. hemipterus (L.),C. freemani Dobson, andC. lugubris Murray. The pheromone was synergized in wind-tunnel bioassays by propyl acetate, a 'host-type' coattractant. In a dose-response study, 50 pg of1, plus propyl acetate, was significantly more attractive than just propyl acetate. Pheromone emission from groups of 65 males, feeding on artificial diet, averaged 2.2 ng/male/day. Emissions from individual males were larger, averaging 72 ng/day and ranging as high as 388 ng/day. Synthetic1 was tested in a date garden in southern California (500 microg/rubber septum), using fermenting whole-wheat bread dough as the coattractant. The pheromone plus dough attracted significantly more beetles than dough alone (means were 4.2 and 0.0 beetles per week per trap). Captured beetles were 54% females. Field trap catches were highest during the months of July and August" |
| Notes: | "PubMed-not-MEDLINEPetroski, R J Bartelt, R J Vetter, R S eng 1994/07/01 J Chem Ecol. 1994 Jul; 20(7):1483-93. doi: 10.1007/BF02059874" |
