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Components of the sex pheromone of the currant pug moth, Eupithecia assimilata , a re‐emergent hop pest in UK
Author(s) -
Campbell C. A. M.,
Tregidga E. L.,
Hall D. R.,
Ando T.,
Yamamoto M.
Publication year - 2007
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.2006.00513.x
Subject(s) - biology , lepidoptera genitalia , sex pheromone , pest analysis , pheromone , botany , humulus lupulus , horticulture , pepper
Abstract After an absence of 50 years, the currant pug moth, Eupithecia assimilata Doubleday (Lepidoptera: Geometridae), has reappeared as an important pest of hops, Humulus lupulus L. (Cannabaceae), in the UK. Pheromone gland extracts from virgin female E. assimilata moths were shown to contain (3 Z ,6 Z )‐ cis ‐9,10‐epoxyheneicosadiene (3 Z ,6 Z ‐ cis ‐9,10‐epoxy‐21:H) by gas chromatography linked to mass spectrometry. (3 Z ,6 Z ,9 Z )‐heneicosatriene (3 Z ,6 Z ,9 Z ‐21:H) was also found as a minor component in one of two extracts. In field experiments, significant numbers of male E. assimilata moths were caught in traps baited with the (9 S ,10 R )‐enantiomer of 3 Z ,6 Z ‐ cis ‐9,10‐epoxy‐21:H but not in those baited with the (9 R ,10 S )‐enantiomer or racemic mixture. Addition of 3 Z ,6 Z ,9 Z ‐21:H at the ratio present in gland extracts greatly reduced the attractiveness of the epoxydiene.