Pollinator Restriction in the Narrow‐tube Flower Type of Mertensia ciliata (James) G. Don (Boraginaceae)
Pollinator Restriction in the Narrow‐tube Flower Type of Mertensia ciliata (James) G. Don (Boraginaceae)
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Mertensia ciliata (James) G. Don（紫草科）窄管花型传粉媒介的限制
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
Kazuo Suzuki
中科院分区：
文献类型：
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作者：
Kazuo Suzuki;Kazuo Suzuki
Mertensia ciliata（紫草科）包括两种不同花冠筒宽度的花型，宽和窄。前者由蜂王和工蜂授粉，而后者则完全由工蜂授粉。花和熊蜂的形态比较表明，花冠筒口的宽度和熊蜂头宽之间的关系是限制传粉者在窄管型工作者的主要因素。长鼻和花冠筒的长度是次要的限制，因为有些皇后不能达到一个狭窄的花冠筒的底部，即使他们的长鼻是完全延长。
Mertensia ciliata (Boraginaceae) includes two flower types with different corolla tube widths, wide and narrow. The former is pollinated by both queens and worker bumblebees, while the latter type is pollinated exclusively by bumblebee workers. Morphological comparisons between the flowers and the bumblebees showed that the relationship between the width of the corolla tube mouth and the head width of the bumblebee is a primary factor restricting pollinators to workers in the narrow-tube type. Length of the proboscides and corolla tube are of secondary importance for this restriction, since some queens are not able to reach the bottom of a narrow corolla tube even if their proboscis is extended fully.