Enantiomeric composition of ipsdienol: a chemotaxonomic character for North American populations of Ips spp. in the pini subgeneric group (Coleoptera: Scolytidae)

• Published in: Journal of chemical ecology Vol. 21; no. 7; pp. 995 - 1016
• Main Authors: Seybold, S.J. (University of Nevada Reno, Reno, Nevada.), Ohtsuka, T, Wood, D.L, Kubo, I
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY Springer 01-07-1995
• Subjects: AMERICA DEL NORTE; AMERIQUE DU NORD; Animal and plant ecology; Animal, plant and microbial ecology; Animals; Autoecology; Biological and medical sciences; BIOTIPOS; BIOTYPE; Coleoptera; COMPOSICION QUIMICA; COMPOSITION CHIMIQUE; ESTRUCTURA QUIMICA; FEROMONAS; Fundamental and applied biological sciences. Psychology; HOTE; HUESPEDES; IPS; IPS AVULSUS; IPS PINI; PHEROMONE; PINUS; Protozoa. Invertebrata; Scolytidae; STRUCTURE CHIMIQUE; Canada; United States; North America; America; Coleoptera; Insecta; Ips avulsus; Pinus banksiana; Ips pini; Animal plant relation; Arthropoda; Enantiomer; Host plant; Gymnospermae; Softwood forest tree; Coniferales; Spermatophyta; Chemical composition; Aggregation pheromone; Invertebrata; Scolytidae
• ISSN: 0098-0331; 1573-1561
• DOI: 10.1007/BF02033804

Thirty-five populations of Ips pini (Say) and one population each of Ips avulsus (Eichhoff) and Ips bonanseai (Hopkins) were analyzed for the enantiomeric composition of ipsdienol (2-methyl-6-methylene-2,7-octadien4-ol). Populations of I. pini occur as at least two distinct regional pheromone variants: New York type [32%-(-) to 56 %-(-)-ipsdienol] and California type [94%-(-) to 98%-(-)-ipsdienol]. A third phenotype may occur in southeastern British Columbia, Idaho, and Montana [91%-(-) to 95%-(-)], possibly indicating a zone of hybridization. Populations of the New York type occur in southwestern British Columbia, Alberta, Saskatchewan, Minnesota, and Wisconsin suggesting a continuum through the Canadian provinces and Lake States. The presence of the New York type in western Canada is likely linked to the Quaternary history of the transcontinentally distributed host, Pinus banksiana Lamb. Male I. avulsus [approximately 25%-(-)] and male I. bonanseai [-29%-(-)] both produce ipsdienol, but not ipsenol. Production of ipsdienol by male I. pini was evaluated in six different Pinus spp. hosts. Following transfer of male I. pini to hosts other than the host of origin, the percentage of the (-)-enantiomer of ipsdienol declined when compared to production in the host of origin