02318nas a2200277 4500008004100000245010800041210006900149260001200218520152600230653001601756653001301772653001401785653001001799653001501809653001401824653003301838653001501871653001501886100001501901700001701916700001301933700001801946700001301964700001401977856004901991 2016 eng d00aSingle-component pheromone consisting of bombykal in a diurnal hawk moth, Neogurelca himachala sangaica0 aSinglecomponent pheromone consisting of bombykal in a diurnal ha c06/20163 a

"Recent work has suggested that hawk moths share pheromone components but are sexually separated by qualitative and quantitative differences in their pheromone blends. During field assays on the sex pheromones of other species, a diurnal hawk moth, Neogurelca himachala sangaica (Lepidoptera: Sphingidae), was frequently captured, but the composition of the sex pheromone of this species was not known. Analysis of hexane extracts of the pheromone glands of calling female by gas chromatography (GC) using an electroantennographic detector (EAD) revealed two components that elicited EAD responses from male moth antennae. These components were identified by their mass spectra and retention indices on two GC columns as (10E,12Z)-10,12-hexadecadienal (E10,Z12–16:Ald) and a trace of its (10E,12E)-isomer (E10,E12–16:Ald) in 98:2 ratio. In field experiments, E10,Z12–16:Ald alone attracted male moths, and addition of E10,E12–16:Ald significantly reduced the attractiveness, even at the naturally-occurring ratio. Analysis of the data using a generalized linear mixed model showed that E10,Z12–16:Ald positively contributed to attractiveness, whereas E10,E12–16:Ald did so negatively, and it was concluded that the sex pheromone of N. himachala sangaica consists solely of E10,Z12–16:Ald, bombykal. The negative effect of E10,E12–16:Ald on attractiveness could promote the species-specificity of this single-component pheromone system."

10aATTRACTANTS10aBOMBYKAL10aFOODPLANT10aJAPAN10aNEOGURELCA10aOLFACTION10aOLFACTORY ANTAGONISM BALANCE10aPHEROMONES10aSPHINGIDAE1 aUehara, T.1 aKitahara, H.1 aNaka, H.1 aMatsuyama, S.1 aAndo, T.1 aHonda, H. uhttps://sphingidae.myspecies.info/node/21171