Pollinator specialization increases with a decrease in a mass‐flowering plant in networks inferred from DNA metabarcoding

André Pornon; Sandra Baksay; Nathalie Escaravage; Monique Burrus; Christophe Andalo

doi:10.1002/ece3.5531

Evolutionary origin of a periodical mass‐flowering plant

Ecology and Evolution ◽

10.1002/ece3.4881 ◽

2019 ◽

Vol 9 (8) ◽

pp. 4373-4381 ◽

Cited By ~ 1

Author(s):

Satoshi Kakishima ◽

Yi‐shuo Liang ◽

Takuro Ito ◽

Tsung-Yu Aleck Yang ◽

Pei‐Luen Lu ◽

...

Keyword(s):

Evolutionary Origin ◽

Flowering Plant ◽

Mass Flowering

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WHEN DOES OUTCROSSING OCCUR IN A MASS-FLOWERING PLANT?

Evolution ◽

10.1111/j.1558-5646.1982.tb05442.x ◽

1982 ◽

Vol 36 (4) ◽

pp. 762-767 ◽

Cited By ~ 24

Author(s):

Andrew G. Stephenson

Keyword(s):

Flowering Plant ◽

Mass Flowering

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Plant-pollinator Specialization: Origin and measurement of curvature

10.1101/2021.10.05.429567 ◽

2021 ◽

Author(s):

Mannfred Masahiro Asada Boehm ◽

Jill E. Jankowski ◽

Quentin C.B. Cronk

Keyword(s):

Differential Geometry ◽

Comparative Morphology ◽

Pollination Ecology ◽

Flowering Plant ◽

Arc Length ◽

Curved Structures ◽

Pollinator Specialization ◽

Definition Of ◽

Pollination Systems ◽

Plant Pollinator

A feature of biodiversity is the abundance of curves displayed by organs and organisms. Curvature is a widespread, convergent trait that has important ecological and evolutionary implications. In pollination ecology, the curvature of flowers and pollinator mouthparts (e.g. hummingbird bills) along the dorsiventral plane has been associated with specialization, competition, and species co-existence. Six methods have historically been used to measure curvature in pollination systems; we provide a solution to this inconsistency by defining curvature using well-established concepts from differential geometry. Intuitively, curvature is the degree to which a line is not straight, but more formally, it is the rate at which the tangent of a curve changes direction with respect to arc length. Here, we establish a protocol wherein a line is fitted against landmarks placed on an image of a curved organ or organism, then curvature is computed at many points along the fitted line and the sum taken. The protocol is demonstrated by studying the development of nectar spur curvature in the flowering plant genus Epimedium (Berberidaceae). By clarifying the definition of curvature, our aim is to make the language of comparative morphology more precise and broadly applicable to capture other curved structures in nature.

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When Does Outcrossing Occur in a Mass-Flowering Plant?

Evolution ◽

10.2307/2407889 ◽

1982 ◽

Vol 36 (4) ◽

pp. 762 ◽

Cited By ~ 31

Author(s):

Andrew G. Stephenson

Keyword(s):

Flowering Plant ◽

Mass Flowering

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Oilseed Rape Shares Abundant and Generalized Pollinators with Its Co-Flowering Plant Species

Insects ◽

10.3390/insects12121096 ◽

2021 ◽

Vol 12 (12) ◽

pp. 1096

Author(s):

Amibeth Thompson ◽

Valentin Ștefan ◽

Tiffany M. Knight

Keyword(s):

Functional Traits ◽

Oilseed Rape ◽

Flowering Plant ◽

Wild Plants ◽

Network Module ◽

Natural Areas ◽

Pollination Services ◽

Mass Flowering ◽

Resource Needs ◽

Flowering Plant Species

Mass-flowering crops, such as Oilseed Rape (OSR), provide resources for pollinators and benefit from pollination services. Studies that observe the community of interactions between plants and pollinators are critical to understanding the resource needs of pollinators. We observed pollinators on OSR and wild plants in adjacent semi-natural areas in Sachsen-Anhalt, Germany to quantify (1) the co-flowering plants that share pollinators with OSR, (2) the identity and functional traits of plants and pollinators in the network module of OSR, and (3) the identity of the plants and pollinators that act as network connectors and hubs. We found that four common plants share a high percentage of their pollinators with OSR. OSR and these plants all attract abundant pollinators in the community, and the patterns of sharing were not more than would be expected by chance sampling. OSR acts as a module hub, and primarily influences the other plants in its module that have similar functional traits. However, the plants that most influence the pollination of OSR have different functional traits and are part of different modules. Our study demonstrates that supporting the pollination of OSR requires the presence of semi-natural areas with plants that can support a high abundances of generalist pollinators.

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When hummingbirds are the thieves: visitation effect on the reproduction of Neotropical snowbell Styrax ferrugineus Nees & Mart (Styracaceae)

Acta Botanica Brasilica ◽

10.1590/s0102-33062012000100007 ◽

2012 ◽

Vol 26 (1) ◽

pp. 58-64 ◽

Cited By ~ 8

Author(s):

Pietro Kiyoshi Maruyama ◽

Luciana Nascimento Custódio ◽

Paulo Eugênio Oliveira

Keyword(s):

Life Span ◽

Fruit Set ◽

Plant Reproduction ◽

Flowering Plant ◽

Mass Flowering ◽

Traditional Concept ◽

Floral Visitors ◽

Exclusion Experiments ◽

Floral Syndromes ◽

Nectar Availability

The spectrum of floral visitors associated with a particular plant is frequently larger than predicted by the traditional concept of floral syndromes and the role that unpredicted visitors play in plant reproduction deserves attention. Hummingbirds are frequently recorded visiting flowers with distinct floral syndromes, especially in some hummingbird flower poor ecosystem such as the Cerrado. In this study we investigated the effect of frequent hummingbird visits on the reproduction of melittophilous Styrax ferrugineus. The flowers were visited by many different insect groups and visits by hummingbirds were frequent, especially early in the morning when nectar availability was higher. Nectar parameters varied considerably during the flower life span, and was probably affected by the temperature variation during the day. Hummingbird exclusion experiments showed no effect in the fruit-set of the plant. The inability of hummingbirds to deplete all of the nectar produced in this mass-flowering plant, and the existence of another resource (pollen) for the primary pollinator (large bees), are possible reasons why there was no perceptible hindrance of plant reproduction by the hummingbirds. Although no effect in the fruit-set was observed, the use of non-ornithophilous flowers must be important for hummingbirds, which are specialized nectar consumers.

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Dominance of the semi-wild honeybee as coffee pollinator across a gradient of shade-tree structure in Ethiopia

Journal of Tropical Ecology ◽

10.1017/s0266467414000327 ◽

2014 ◽

Vol 30 (5) ◽

pp. 401-408 ◽

Cited By ~ 12

Author(s):

Ulrika Samnegård ◽

Peter A. Hambäck ◽

Sileshi Nemomissa ◽

Kristoffer Hylander

Keyword(s):

Tree Structure ◽

Flowering Plant ◽

Perennial Crop ◽

Mass Flowering ◽

Tree Structures ◽

Social Bees ◽

Shade Tree ◽

The Social ◽

Bee Diversity ◽

Flowering Plant Species

Abstract:Mass-flowering plant species are often pollinated by social bees that are able to use the abundant resource by recruiting workers from their colonies. In this study we surveyed pollinators on the mass-flowering perennial crop coffee (Coffea arabica) in its native range in Ethiopia. Previous studies in areas where coffee is introduced often find the social honeybee, Apis mellifera, to be the dominant pollinator. In those areas, the bee-species composition visiting coffee varies with a higher bee diversity closer to forest or in less modified habitats. We surveyed pollinators of coffee under different shade-tree structures, by collecting hoverflies and bees landing on coffee flowers in 19 sites in south-west Ethiopia. We found the native honeybee (A. mellifera) to be the dominant visitor of coffee flowers in all sites. Honeybee abundance was not affected by the local shade-tree structure, but was positively affected by the amount of coffee flower resources. Other pollinators were positively affected by complex shade-tree structures. To conclude, the honeybee is clearly the dominant pollinator of coffee in Ethiopia along the whole shade-tree structure gradient. Its high abundance could be a consequence of the provision of traditional bee hives in the landscape, which are colonized by wild swarming honeybees.

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