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Sex pheromone of the larch caterpillar moth, Dendrolimus superans , from northeastern China
Author(s) -
Kong XiangBo,
Zhao ChengHua,
Wang Rui
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.1570-7458.2007.00562.x
Subject(s) - biology , sex pheromone , pheromone , electroantennography , lepidoptera genitalia , sympatric speciation , pheromone trap , caterpillar , pest analysis , zoology , botany
The larch caterpillar moth, Dendrolimus superans Butler (Lepidoptera: Lasiocampidae), is a serious pest in the northeastern part of China. In order to develop an effective method for monitoring D . superans , we began a project to identify the sex pheromone of D . superans and preliminary results were published in a note in 2001. Here we report complete laboratory and field results to support the identification. ( Z , E )‐5,7‐Dodecadienal, ( Z , E )‐5,7‐dodecadienol, ( Z )‐5‐dodecenol, and ( Z )‐5‐dodecenal (100:95:75:71) were identified by gas chromatography (GC) and coupled GC‐mass spectrometry in extracts of pheromone glands of female D . superans . However, only ( Z , E )‐5,7‐dodecadienal elicited strong responses from conspecific male antennae in coupled GC‐electroantennography studies. Field tests with synthetic compounds indicated that baits containing ( Z , E )‐5,7‐dodecadienal as a single component attracted male D . superans moths, whereas addition of one, two, or all three of the possible minor components did not increase the attractiveness of lures. ( Z , E )‐5,7‐Dodecadienyl acetate, one of the pheromone components in sympatric Dendrolimus species, was antagonistic, but the analog ( Z , E )‐5,7‐dodecadienyl propionate, another pheromone component in sympatric Dendrolimus species, was not. Since 2005, pheromone traps baited with ( Z , E )‐5,7‐dodecadienal have been used effectively for monitoring populations of D . superans in various areas of northeastern China.