ISSN:
1573-1561
Keywords:
Hylurgopinus rufipes
;
Scolytus multistriatus
;
Coleoptera
;
Scolytidae
;
sesquiterpenes
;
host attractants
;
Dutch elm disease
;
kairomone
;
pheromone
;
elm bark beetles
;
Ulmus americana
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
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 withH. rufipes were marginally successful. In laboratory bioassays, nine of 14 sequiterpenes identified from active fractions of Porapak extracts elicited significant response fromScolytus multistriatus male and female beetles: δ- and γ-cadinene, α-cubebene, γ-muurolene, and β-elemene were most active. However, in field tests, none of the sesquiterpenes alone or in combination significantly attractedS. multistriatus, nor did they significantly enhance the attraction ofS. multistriatus to female-produced pheromone components (4-methyl-3-heptanol [H] and α-multistriatin [M]). In other field tests, α-cubebene (C) significantly enhanced response ofS. multistriatus to H plus M, but foliage, logs, or chips of healthy elm did not enhance trap catch to HMC.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01012095
Permalink
