Evidence of Premating Isolation Between Two Sibling Moths: Ectropis grisescens and Ectropis obliqua (Lepidoptera: Geometridae)

文献类型： 外文期刊

第一作者： Luo, Z. X.

作者： Luo, Z. X.;Li, Z. Q.;Cai, X. M.;Bian, L.;Chen, Z. M.

作者机构：

关键词： Ectropis grisescens;Ectropis obliqua;Premating isolation;Sex pheromones;(Z,Z)-3,9-cis-6,7-epoxy-nonadecadiene

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.381； 五年影响因子：2.568 ）

ISSN： 0022-0493

年卷期： 2017 年 110 卷 6 期

页码：

收录情况： SCI

摘要： The sex pheromones of Ectropis grisescens Warren and Ectropis obliqua Prout were both reported to contain (Z, Z, Z)3,6,9- octadecatriene (Z3, Z6, Z9-18: H) and (Z, Z)-3,9-cis-6,7-epoxy-octadecadiene (Z3, epo6, Z9-18: H). To clarify how these two sibling geometrids maintain premating isolation, the female sex pheromones of the two species were reexamined. Gas chromatography-electroantennographic detection (GC-EAD) and gas chromatography-mass spectrometry revealed two GC-EAD-active compounds, Z3, Z6, Z9-18: H and Z3, epo6, Z9-18: H, in E. grisescens female pheromone glands as well as an additional GC-EAD-active compound, (Z, Z)-3,9-cis-6,7-epoxy-nonadecadiene (Z3, epo6, Z9-19: H), in E. obliqua female pheromone glands. Synthesized Z3, Z6, Z9-18: H and Z3, epo6, Z9-18: H elicited dose-dependent electroantennogram (EAG) responses from male antennae of both E. grisescens and E. obliqua. However, Z3, epo6, Z9-19: H only elicited dose-dependent EAG responses from E. obliqua and limited EAG responses from E. grisescens at all doses. In wind-tunnel studies, lures that contained Z3, Z6, Z9-18: H and Z3, epo6, Z9-18: H attracted E. grisescens males and had no effect on E. obliqua males. The addition of Z3, epo6, Z9-19: H to the blend of Z3, Z6, Z9-18: H and Z3, epo6, Z9-18: H strongly attracted E. obliqua males but had a limited attraction for E. grisescens males. Thus, Z3, Z6, Z9-18: H and Z3, epo6, Z9-18: H were sex pheromone components of E. grisescens, whereas Z3, Z6, Z9-18: H, Z3, epo6, Z9-18: H and Z3, epo6, Z9-19: H were sex pheromone components of E. obliqua. The presence or absence of Z3, epo6, Z9-19: H played a central role in the premating isolation of these two sibling species.

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