Temporal variation in floral scent emission of a woody plant and flower visiting behaviour of male and female flies

• 全文链接

木本植物花香散发及雌雄蝇访花行为的时间变化

关键词：

来源：

OIKOS 期刊

全文链接：

//agri.nais.net.cn/topic/downloadFile/3920c1aa-9942-4ede-922d-15d0f7c2b81e

来源地址：

https://nsojournals.onlinelibrary.wiley.com/doi/epdf/10.1111/oik.10727

资源所属：

茶学研究专题

类型：

学术文献

语种：

英语

原文发布日期：

2025-01-08

摘要：

We examined temporal variation in the emission of scent of yellowhorn Xanthoceras sorbifolium flowers, visitation behaviour of its main pollinators, male and female Bibio rufiventris flies, and their responses to floral volatile compounds using field experiments and controlled bioassays. Our results show significant daily fluctuations in floral volatile emission of X. sorbifolium in the field. The relative emission of 1-octen-3-ol, 1-octanol, benzaldehyde, and α-farnesene increased from 9:00 to 15:00 h, while (Z)-3-hexen-1-ol, (E)-2-hexen-1-ol, (E)-2-hexenal, 2-methyl-6-hepten-1-ol, (E)-2-nonenal, 2,6,6-trimethyl-2-cyclohexene-1-methanol, (E)-2-nonenal and (E,Z)-2,6-nonadienal decreased. In concert, we observed an increase in visits and visitation duration for male pollinators, but a decrease for female visitation duration. Pollinators exhibited sex-specific responses to floral volatiles, with attraction to 1-octen-3-ol and 1-octanol for B. rufiventris males, while (E)-2-nonenal, (E,Z)-2,6-nonadienal and (E)-2-hexenal attracted females. Our study shows that temporal variation in floral scent may explain differences in flower visitation by male and female pollinators through sex-specific responses to floral volatiles. Investigating sex-based differences exhibited by pollinators and temporal variation in floral scent emission will help understand the dynamic nature of plant–pollinator interactions.