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Influence of the proportion of (−) α ‐pinene in pheromone bait on Ips typographus (Col., Scolytidae) catch in pheromone trap barriers and in single traps
Author(s) -
Jakuš R.,
Blaženec M.
Publication year - 2003
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1046/j.1439-0418.2003.00695.x
Subject(s) - pinene , pheromone , biology , pheromone trap , sex pheromone , pest analysis , alpha pinene , horticulture , botany , attraction , toxicology , zoology , linguistics , philosophy , essential oil , limonene
Further possibilities of increasing catch efficiency of Ips typographus L. in pheromone trap barriers with two different levels of release of (4S)‐ cis ‐verbenol (cV) and in single traps were tested. Pheromone mixtures containing cV, 2‐methyl‐3‐buten‐2‐ol (MB) and 0, 1, 10, 35, 60 and 90% (−) α ‐pinene were prepared. Basically, MB was successively replaced by (−) α ‐pinene in the mixtures. Tests were performed on the edge of a spruce forest when outbreaks of I. typographus occurred. The substitution of MB with (−) α ‐pinene had different effects in different types of pheromone trap barriers and in single traps. It is not possible to increase the attractiveness of the bait having a higher percentage of cV by supplementing a certain percentage of MB with (−) α ‐pinene. The catch of I. typographus decreased with an increase in the percentage of (−) α ‐pinene in the bait. It is possible to increase the attractiveness of the bait having a lower percentage of cV by supplementing certain percentages of MB with (−) α ‐pinene. A slight synergistic effect of (−) α ‐pinene with MB/cV mixture is visible in this type of bait. In the case of single traps, supplementing MB with (−) α ‐pinene possibly causes a slight synergistic effect. An increase in the percentage of (−) α ‐pinene increases the percentage of males in the catch.