The pollination of Habenaria rhodocheila (Orchidaceae) in South China: When butterflies take sides.
The pollination of Habenaria rhodocheila (Orchidaceae) in South China: When butterflies take sides.
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华南红唇花（兰科）的授粉：当蝴蝶偏向一边时
DOI：
10.1002/ece3.7242
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发表时间：
2021-03
影响因子：
2.6
通讯作者：
Ren ZX
中科院分区：
文献类型：
--
作者：
Chen XH;Tan SL;Liang YL;Huang L;Xiao HW;Luo HL;Xiong DJ;Yang BY;Ren ZX
Habenaria 是兰科中最大的陆生属之一。大多数对具有绿白色和夜间有香味的花的瓤属物种的实地研究都是由夜间活动的天蛾和定居蛾授粉的。然而，H. rhodocheila 呈现出淡红色的花朵，缺乏可察觉的气味，并且不符合飞蛾授粉综合症。我们对华南红唇凤蝶的传粉媒介、繁殖系统和功能性状进行了调查，发现两种昼行性燕尾蝶——Papilio helenus 和 Papilio nephelus（凤蝶科）是有效的传粉媒介。当蝴蝶在距骨处寻找花蜜时，花粉块就附着在触须之间。在 H. rhodocheila 的刺的入口（窦）发现了一个三角形突出的正中喙叶。这个裂片将支线开口分成两个入口，迫使蝴蝶从左侧或右侧进入它们的长鼻。当正中喙叶的投影被去除时，花粉附着部位变为蝴蝶的眼睛，导致花粉去除率较高，但花粉沉积率较低。我们的石英玻璃圆筒选择实验表明，视觉而非嗅觉线索为蝴蝶定位这些花朵提供了主要刺激。手工授粉实验表明该物种是自交亲和的，但依赖传粉媒介。然而，自花授粉果实中产生的具有大胚胎的种子的比例显着低于异花授粉果实中的，表明显着的近交抑制。与许多其他兰花品种不同，坐果率高于花粉去除率，这表明具有易碎花粉的品种的授粉效率很高。 Habenaria 属中从蛾授粉到蝴蝶授粉的转变与其他兰花谱系平行，为了解传粉媒介介导的花性状选择的潜力提供了见解。两种昼行燕尾蝶 Papilio helenus 和 Papilio nephelus（凤蝶科）是红唇瓤的有效传粉者。视觉而非嗅觉线索为蝴蝶定位这些花朵提供了主要刺激。自花授粉果实中产生的具有大胚的种子的比例显着低于异花授粉果实中的，表明显着的近交抑制。
Habenaria is one of the largest terrestrial genera in the family Orchidaceae. Most field studies on Habenaria species with greenish–white and nocturnal scented flowers are pollinated by nocturnal hawkmoths and settling moths. However, H. rhodocheila presents reddish flowers lacking a detectable scent and fails to fit the moth pollination syndrome. We investigated the pollinators, breeding system, and functional traits of H. rhodocheila in South China and found that two diurnal swallowtail butterflies Papilio helenus and Papilio nephelus (Papilionidae) were the effective pollinators. When butterflies foraged for nectar in the spur, the pollinia became attached between the palpi. A triangular projected median rostellar lobe was found at the entrance (sinus) of the spur of H. rhodocheila. This lobe divided the spur opening into two entrances forcing butterflies to enter their proboscides through the left or right side. When the projection of median rostellar lobe was removed, the site of pollinium attachment changed to the eyes of the butterflies, leading to a higher rate of pollinium removal but lower rate of pollinium deposition. Our quartz glass cylinder choice experiment suggested that visual rather than olfactory cues provided the major stimuli for butterflies to locate these flowers. Hand pollination experiments suggested this species was self‐compatible but pollinator‐dependent. However, the proportion of seeds with large embryos produced in self‐pollinated fruits was significantly lower than in cross‐pollinated fruits, indicating a significant inbreeding depression. Unlike many other orchid species, fruit set was higher than rates of pollinium removal, indicating a high level of pollination efficiency in a species with friable pollinia. Shifts from moth to butterfly pollination in the genus Habenaria parallel other orchid lineages providing insights into the potential for pollinator‐mediated floral trait selection. Two diurnal swallowtail butterflies Papilio helenus and Papilio nephelus (Papilionidae) were the effective pollinators of Habenaria rhodocheila. Visual rather than olfactory cues provided the major stimuli for butterflies to locate these flowers. The proportion of seeds with large embryos produced in self‐pollinated fruits was significantly lower than in cross‐pollinated fruits, indicating a significant inbreeding depression.
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DOI：
10.1098/rspb.2001.1928
发表时间：
2002-03-22
影响因子：
4.7
作者：
Alexandersson, R;Johnson, SD
通讯作者：
Johnson, SD
好的、坏的和丑陋的：分析和人工智能支持的个人信息收集对隐私和参与乘车共享的影响
影响因子：
9.5
作者：
Cheng, Xusen;Su, Linlin;Cai, Shun
通讯作者：
Cai, Shun
影响因子：
0.4
作者：
Ikeuchi, Yuna;Suetsugu, Kenji;Sumikawa, Huyuhiko
通讯作者：
Sumikawa, Huyuhiko
影响因子：
3.3
作者：
Johnson, SD;Steiner, KE
通讯作者：
Steiner, KE
影响因子：
4.1
作者：
Batista, Joao A. N.;Borges, Karina S.;van den Berg, Cassio
通讯作者：
van den Berg, Cassio