Selection by pollinators on the speciation of flowering plants

传粉媒介对开花植物物种的选择

• 批准号: 06640897
• 负责人: INOUE Ken
• 金额: $ 1.34万
• 依托单位: SHINSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06640897/
• 关键词: Campanula; Bumble bees; Flower size; male reproductive success; pollination efficiency; morphological adaptation; 花のサイズの進化; 送粉昆虫; 父性解析; 種分化; 花のサイズ

A series of experiments to investigate the selective forces by pollinating insects on the flower size of Campanula (Campanulaceae) were carried out. I collected plants of Campanula from Honshu and the Izu Islands, and created an experimental population of Campanula with a large variation in flower size. First experiment was to present flowers with large variation to pollinators and to investigate their responces. The responces of pollinators (bumblebees, megachilid bees, halictid bees) was different from each other.Next experiment was to present flowers of male-phased flower with size variation and large female-phased flower to bumblebees and to investigate the male reproductive success in relation to male flower size. It was found that larger flowered-plants more sired than smaller flowered-ones.Third experiment was to investigate the amount and position of pollen grains to bumblebee body, using dried bumblebee specimens and fresh Campanula flowers. It was found that flower size determined the position of pollaen attached to bumblebees in which larger flowers were more appropriate to pollen deposition than smaller ones.It was suggested that flower size of Campanula is stabilized by the selection through morphological adaptation to bumblebee pollinators.

进行了一系列的实验，通过对campanula（campanulaceae）花大小的昆虫进行授粉来调查选择性力量。我从本申和伊祖群岛收集了Campanula的植物，并创造了坎帕努拉的实验人群，花朵尺寸差异很大。第一个实验是向授粉媒介展示较大变化的花，并调查其响应。授粉媒介的响应（大黄蜂，巨型蜜蜂，蜂巢蜜蜂）与彼此不同。次要实验是为了呈现有大小变化的男性花朵的花朵和大雌花的花朵，以调查男性在与雄花大小有关的男性生殖成功。已经发现，使用干燥的大黄蜂标本和新鲜的campanula花朵，研究了比较小的花植物比较小的花植物更牢固。发现花的大小确定了与大黄蜂相关的花粉的位置，在大黄蜂上，大花比较小的花朵更适合花粉沉积。这建议通过对大黄蜂传粉媒介的形态适应来稳定campanula的花大小。

项目成果

Inoue K.,M.Maki & M.Masuda: "Different responses of pollinating bees to size variation and sexual phases in flowers of Campanula" Ecological Research. 10. 267-273 (1995)

井上K.M.Maki

Inoue,K: "(D.Lloyd & S.Barreti eds.)Floral Biology" Chapman d Hall, 400 (1995)

井上，K：“（D.劳埃德

Inoue, K,.M.Maki & M.Masuda: "Different responses of pollinating bees to size variation and sexual phases in flowers of Campanula." Ecological Research. 10. 267-273 (1995)

井上真木

Inoue K.,M.Maki & M.Masuda: "Evolution of Campanula flowers in relation to insect pollinators on islands" Floral Biolgy(eds.D.G.Lloyd & S.C.H.Spencer), Chapman & Hall.377-400 (1995)

井上K.M.Maki

Inoue,K.,M.Maki & M.Masuda: "Different reaponses of pollinating bees to size simuration and sexeal phases in flowers of Canpamla" Ecological Research. 10. 267-273 (1995)

井上K.Maki