Female sex pheromone of Cystidia couaggaria couaggaria (Lepidoptera: Geometridae): identification and field attraction.
The plum cankerworm moth, Cystidia couaggaria couaggaria (Geometridae: Ennominae), is a defoliator of Chinese plum trees (Prunus mume). The pheromone components of the female were analyzed by gas chromatography (GC) with an electro-antennographic (EAG) detector and GC coupled with mass spectrometry. The crude pheromone extract included several EAG-active components, i.e., trienyl, dienyl, and saturated hydrocarbons, with a C21-C25 straight chain. The characteristic mass spectra indicated the unsaturated hydrocarbons to be (3Z,6Z,9Z)-3,6,9-trienes and (6Z,9Z)-6,9-dienes. In the fields, mixtures of the synthetic C<21 and C<23 trienes in a ratio of 2:3 and 1:4 successfully attracted males of this diurnal species during daytime. While the male antennae responded to the C25 triene and saturated hydrocarbons, their synergistic effects were not observed on the male attraction in the fields. Addition of the C21 diene interestingly inhibited the activity of the triene mixture. Males of Cystidia truncangulata, a sympatric diurnal congener of C. c. couaggaria, showed similar EAG responses to the unsaturated hydrocarbons, but no C. truncangulata males were attracted by the lures tested for C. c. couaggaria males, indicating that the identified hydrocarbons comprised the species-specific pheromone of C. c. couaggaria females.
Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan.
Rei
R
Yamakawa
Yoshiko
Y
Takubo
Kanako
K
Ohbayashi
Hideshi
H
Naka
Tetsu
T
Ando
D000473:Alkanes / Q000302:isolation & purification* / Q000494:pharmacology; D000818:Animals; D045424:Complex Mixtures / Q000737:chemistry; D004347:Drug Interactions; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D008297:Male; D009036:Moths / Q000187:drug effects* / Q000502:physiology; D011090:Polyenes / Q000302:isolation & purification* / Q000494:pharmacology; D012724:Sex Attractants / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D012726:Sexual Behavior, Animal / Q000187:drug effects* / Q000502:physiology; D013045:Species Specificity
D000473:Alkanes; D045424:Complex Mixtures; D011090:Polyenes; D012724:Sex Attractants