Floral divergence, pollinator partitioning and the spatiotemporal pattern of plant-pollinator interactions in three sympatric Adenophora species

被引:26
作者
Liu, Chang-Qiu [1 ]
Huang, Shuang-Quan [1 ]
机构
[1] Wuhan Univ, Coll Life Sci, State Key Lab Hybrid Rice, Wuhan 430072, Peoples R China
基金
美国国家科学基金会;
关键词
Diurnal and nocturnal pollinators; Evolutionary transition; Pollinator importance; Pollination syndrome; Specialization; SECONDARY POLLEN PRESENTATION; REPRODUCTIVE ISOLATION; CHARACTER DISPLACEMENT; SYSTEMS; MORPHOLOGY; SPECIALIZATION; EVOLUTION; DIVERSIFICATION; HUMMINGBIRDS; BURMEISTERA;
D O I
10.1007/s00442-013-2723-7
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Floral divergence among congeners may relate to differential utilization of pollinators and contribute to reducing overlap in pollination niches. To investigate whether and how floral differences are associated with differential utilization of pollinators in three sympatric Adenophora species, we analyzed floral traits and evaluated the contribution of different visitors to pollination. We compared visitation rates of different pollinator categories in different years and sites. A suite of floral traits differed among the three Adenophora species, suggesting adaptation to diurnal versus nocturnal pollination and an intermediate condition. However, many visitor species were shared among the three plant species, suggesting that floral traits did not rigorously filter visitors. Effective pollinators were large bees and moths. The importance of large bees as pollinators decreased whereas that of moths increased along the gradient from typically bee-pollinated to moth-pollinated flowers. The intermediate species (A. khasiana) differed substantially from the other two species in pollinator species but not in pollinator categories. The principal pollinator category of each species was constant across years and sites except in the intermediate species where it differed between two sites. Overall, the three sympatric species of Adenophora partition pollinators by floral divergence and the principal pollinators coincide with the predictions based on floral syndromes.
引用
收藏
页码:1411 / 1423
页数:13
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