ISSN:
1573-1561
Keywords:
Scolytus multistriatus
;
European Elm Bark beetle
;
Scolytidae
;
Dutch elm disease
;
aggregation peromone
;
kairomone
;
aggregation attractant
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The three components of theScolytus Multistriatus aggregation attractant-4-methyl-3-heptanol (1), α-multistriatin (2), and α-cubebene (3)-were collected from beetles and elm wood by aeration, solvent extraction of host tissue, or solvent extraction of beetles and beetle parts. Bioassays and analysis of extracts demonstrated that (a) compounds 1 and 2 are produced by virgin females and 3 is host-produced, (b) cessation of the production of 1 is coincident with diminished attractiveness of females after they have been joined by males, (c) the release of 3 from elm wood is augmented by attacking beetles, and (d) the level of 3 is related to the condition of the wood, and fungal growth (particularlyceratocystis ulmi) may lead to increased levels of 3. Compound 1 was concentrated in the upper abdominal area and 2 in the abdomen tips, but neither component was in the hindgut. A gland opening through the vaginal palpi (a pair of sclerotized conical structures) was circumstantially associated with the release of 2. Compounds 1, 2, and 3 are regulatory agents that contribute to the initiation and maintenance of the beetle-elm-microorganism biosystem.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00988186
