| Title: | "Components of moribund American elm trees as attractants to elm bark beetles,Hylurgopinus rufipes and Scolytus multistriatus" |
| Author(s): | Millar JG; Zhao CH; Lanier GN; O'Callaghan DP; Griggs M; West JR; Silverstein RM; |
| Address: | "State University of New York College of Environmental Science and Forestry, 13210, Syracuse, New York" |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "Hylurgopinus rufipes male and female beetles were attracted to American elms infected with Dutch elm disease, and to American elms killed by injection of cacodylic acid.H. rufipes was also attracted to solvent extracts of elm, or to Porapak Q-trapped volatiles from elm. The major components of attractive fractions of Porapak Q-trapped volatiles were isolated, identified, and tested in field bioassays. Several artificially compounded mixtures of sesquiterpenes were attractive toH. rufipes, although no bait tested was as attractive as diseased tree controls. Laboratory bioassays with H. rufipes were marginally successful. In laboratory bioassays, nine of 14 sequiterpenes identified from active fractions of Porapak extracts elicited significant response from Scolytus multistriatus male and female beetles: delta- and gamma-cadinene, alpha-cubebene, gamma-muurolene, and beta-elemene were most active. However, in field tests, none of the sesquiterpenes alone or in combination significantly attracted S. multistriatus, nor did they significantly enhance the attraction of S. multistriatus to female-produced pheromone components (4-methyl-3-heptanol [H] and alpha-multistriatin [M]). In other field tests, alpha-cubebene (C) significantly enhanced response of S. multistriatus to H plus M, but foliage, logs, or chips of healthy elm did not enhance trap catch to HMC" |
| Notes: | "PubMed-not-MEDLINEMillar, J G Zhao, C H Lanier, G N O'Callaghan, D P Griggs, M West, J R Silverstein, R M eng 1986/03/01 J Chem Ecol. 1986 Mar; 12(3):583-608. doi: 10.1007/BF01012095" |
