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Weitere Feldversuche zur Spezifität synthetischer Sexuallockstoffe bei Choristoneura murinana
Author(s) -
Priesner E.,
Bogenschütz H.
Publication year - 1982
Publication title -
zeitschrift für angewandte entomologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0044-2240
DOI - 10.1111/j.1439-0418.1982.tb02579.x
Subject(s) - sex pheromone , chemistry , horticulture , botany , toxicology , biology
Further field experiments on the specificity of synthetic sex‐attractants in Choristoneura murinana Studies on sexual attraction of C. murinana (European fir budworm) males to candidate pheromone chemicals and related compounds were continued through two‐years of field trapping tests conducted in silver‐fir stands of eastern France. A total of 50 binary and ternary compound mixtures, suggested by electrophysiological analysis of male receptor types, were compared to the “standard” lure of 10 μg (Z)‐9‐dodecenyl acetate plus 1 μg (Z)‐11‐tetradecenyl acetate (Z9–12:Ac/Z11–14:Ac 10/1; determined in previous studies). Mixtures of these two compounds in the different ratios of 10/0.3, 10/3 and 10/10 all revealed the same high catch as the standard ratio (10/1) combination. Of various chemicals tried as possible substitutes for Z11–14:Ac, only the C 13 homologue, Z11–13:Ac, showed full synergistic attraction properties when combined with Z9–12:Ac; E 11–13:Ac gave this effect at the 30 fold higher amount whereas other test chemicals (including E 11–14:Ac) were ineffective in substituting for Z11–14:Ac. In tests where a third chemical was combined to the 10/1 standard lure, E 9–12:Ac and Z9–14:Ac were the more effective in reducing trap captures; most other third chemicals did not show pronounced inhibitory (or synergistic) effects up to the 10/1/10 mixture ratio. The results are discussed with respect to sensory perception of the different test chemicals; the possible nature of secondary components in the C. murinana female sex pheromone; and the requirements for lure composition in future monitoring programs.