From a bee's eye:Effects of UV bullseye size on reproductive success in a dioecious vine Herpetospermum pedunculosum(Cucurbitaceae)

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外文标题：From a bee's eye:Effects of UV bullseye size on reproductive success in a dioecious vine Herpetospermum pedunculosum(Cucurbitaceae)

外文摘要：Descriptions of floral traits based on the visual capabilities of pollinators would advance our under-standing of flower evolution and plant-pollinator relationships.One such trait is the contrasting UV bullseye color pattern,which is invisible to human eyes but can be perceived by bee pollinators.How-ever,it remains largely unknown how UV bullseye size affects male and female reproductive fitness.We examined UV bullseye patterns in the dioecious Herpetospermum pedunculosum,and quantified the ef-fects of UV bullseye size on male and female fitness.Both UV bullseye size and flower size were larger in male flowers than in female flowers.The dominant pollinators of H.pedunculosum were bees,which could perceive the UV bullseye pattern.Bee pollinators exhibited a preference for male flowers with nectar rewards,and visited a greater number of male flowers on plants with a larger UV bullseye.Male reproductive fitness was found to decrease in plants with larger UV bullseyes,likely due to the high rate of intra-plant pollen transfer.Rewardless female flowers were less attractive to bee pollinators,resulting in pollen limitation of seed production.Female flowers with moderate UV bullseye size produced more seeds.Our results suggest that UV bullseye is subject to different selection via male and female fitness of H.pedunculosum with deceptive pollination,and large UV bullseye is generally not favored.This research is the first to examine the relationship between UV bullseye size and plant reproductive success,high-lighting that floral evolution should be investigated from the pollinator's eye in future research.

外文关键词：

UV bullseyePollinator behaviorFlower displayMale and female fitnessHerpetospermum pedunculosum

作者：

Jin-Feng Wu、Zhu-Qing Chen、Xi-Long Wang、Yan-Li Tu、Lin-Lin Wang、Yong-Ping Yang、Li-Hua Meng、Yuan-Wen Duan

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作者单位：

School of Life Sciences,Yunnan Normal University,Kunming 650092,Yunnan,PR China

Department of Plant Resources,Xizang Plateau Institute of Biology,Lasa 850000,Xizang,PR China

The Germplasm Bank of Wild Species,Institute of Tibetan Plateau Research at Kunming,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,Yunnan,PR China

Yunnan Lijiang Forest Ecosystem National Observation and Research Station,Kunming Institute of Botany,Chinese Academy of Sciences,Lijiang 674100,Yunnan,PR China

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关键词：

UV bullseye Pollinator behavior Flower display Male and female fitness Herpetospermum pedunculosum

出版年：

2024

DOI：

10.1016/j.pld.2023.06.004

植物多样性(英文)

中国科学院昆明植物研究所，中国植物学会

植物多样性(英文)

CSTPCD

影响因子：0.617

ISSN：2096-2703

年,卷(期)：2024.46(6)