scholarly journals Beyond buzz‐pollination – departures from an adaptive plateau lead to new pollination syndromes

2018 ◽  
Vol 221 (2) ◽  
pp. 1136-1149 ◽  
Author(s):  
Agnes S. Dellinger ◽  
Marion Chartier ◽  
Diana Fernández‐Fernández ◽  
Darin S. Penneys ◽  
Marcela Alvear ◽  
...  
Keyword(s):  
Buzz Pollination ◽  
Pollination Syndromes

scholarly journals Connective appendages in Huberia bradeana (Melastomataceae) affect pollen release during buzz pollination

Plant Biology ◽  
2021 ◽  
Author(s):  
T. Bochorny ◽  
L. F. Bacci ◽  
A. S. Dellinger ◽  
F. A. Michelangeli ◽  
R. Goldenberg ◽  
...  
Keyword(s):  
Buzz Pollination ◽  
Pollen Release

Pollen presentation and pollination syndromes, with special reference to Penstemon

2000 ◽  
Vol 15 (1) ◽  
pp. 11-29 ◽  
Author(s):  
James D. Thomson ◽  
Paul Wilson ◽  
Michael Valenzuela ◽  
Maria Malzone
Keyword(s):  
Special Reference ◽  
Pollination Syndromes ◽  
Pollen Presentation

Anther and stigma morphology in mirror-image flowers of Chamaecrista chamaecristoides (Fabaceae): implications for buzz pollination

Plant Biology ◽  
2010 ◽  
Vol 13 ◽  
pp. 19-24 ◽  
Author(s):  
G. Arceo-Gómez ◽  
M. L. Martínez ◽  
V. Parra-Tabla ◽  
J. G. García-Franco
Keyword(s):  
Mirror Image ◽  
Buzz Pollination ◽  
Stigma Morphology

scholarly journals Why so many flowers? A preliminary assessment of mixed pollination strategy enhancing sexual reproduction of the invasive <i>Acacia longifolia</i> in Portugal

Web Ecology ◽  
2018 ◽  
Vol 18 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Manuela Giovanetti ◽  
Margarida Ramos ◽  
Cristina Máguas
Keyword(s):  
Invasive Plant ◽  
Seed Set ◽  
Pollen Grains ◽  
Striking Difference ◽  
Pollination Syndromes ◽  
Pollination Success ◽  
Relative Contribution ◽  
Acacia Longifolia ◽  
Exclusion Experiments ◽  
Pollination Strategy

Abstract. Acacia longifolia, a native legume from Australia, has been introduced in many European countries and elsewhere, thus becoming one of the most important global invasive species. In Europe, its flowering occurs in a period unsuitable for insect activity: nonetheless it is considered entomophilous. Floral traits of this species are puzzling: brightly coloured and scented as liked by insects, but with abundant staminate small-sized flowers and relatively small pollen grains, as it is common in anemophilous species. Invasion processes are especially favoured when reshaping local ecological networks, thus the interest in understanding pollination syndromes associated with invasive plant species that may facilitate invasiveness. Moreover, a striking difference exists between its massive flowering and relatively poor seed set. We introduced a novel approach: first, we consider the possibility that a part of the pollination success is carried on by wind and, second, we weighted the ethological perspective of the main pollinator. During the flowering season of A. longifolia (February–April 2016), we carried on exclusion experiments to detect the relative contribution of insects and wind. While the exclusion experiments corroborated the need for pollen vectors, we actually recorded a low abundance of insects. The honeybee, known pollinator of acacias, was relatively rare and not always productive in terms of successful visits. While wind contributed to seed set, focal observations confirmed that honeybees transfer pollen when visiting both the inflorescences to collect pollen and the extrafloral nectaries to collect nectar. The mixed pollination strategy of A. longifolia may then be the basis of its success in invading Portugal's windy coasts.

Buzz pollination in the Epacridaceae

2002 ◽  
Vol 50 (1) ◽  
pp. 83 ◽  
Author(s):  
T. F. Houston ◽  
P. G. Ladd
Keyword(s):  
Seed Set ◽  
Corolla Tube ◽  
Pollen Tubes ◽  
Pollination Syndrome ◽  
Native Bees ◽  
Buzz Pollination ◽  
The Family

Conostephium (Epacridaceae) has flowers that conform with a buzz-pollination syndrome but, unlike most plants with this form of pollination, the anthers are hidden within the corolla tube. Vibrations generated by bees grasping the apices of the corolla tubes must be transferred via short broad filaments to the anthers. The anthers do not have pores but each dehisces from the apex by a slit that elongates over the time the flowers take to senesce (up to 10 days). This may limit self-fertilisation as the stigma is receptive as soon as it appears from between the very short corolla lobes, so little pollen is released at first but later this would increase as the slit elongates. Visitation by pollinators has rarely been seen but several observations of native bees (Leioproctus and Lasioglossum) working the flowers are presented. The bees visit the nectarless flowers of Conostephium only for pollen and must forage at other kinds of flowers to obtain nectar. Pollen tubes occurred in the stigmas of most older flowers of C. pendulum, so pollen delivery does not seem to limit seed set. Despite this, the species sets few fruit. From examination of the taxonomic positions of likely buzz-pollinated taxa in the family, it appears that pollination by sonication has arisen independently several times in the Epacridaceae, with primarily two different floral configurations.

scholarly journals Avian pollinators and the pollination syndromes of selected Mountain Fynbos plants

1984 ◽  
Vol 3 (5) ◽  
pp. 285-296 ◽  
Author(s):  
A.G. Rebelo ◽  
W.R. Siegfried ◽  
A.A. Crowe
Keyword(s):  
Pollination Syndromes

scholarly journals Buzz‐pollination in Neotropical bees: genus‐dependent frequencies and lack of optimal frequency for pollen release

2018 ◽  
Vol 27 (1) ◽  
pp. 133-142 ◽  
Author(s):  
Conrado Augusto Rosi‐Denadai ◽  
Priscila Cássia Souza Araújo ◽  
Lucio Antônio de Oliveira Campos ◽  
Lirio Cosme ◽  
Raul Narciso Carvalho Guedes
Keyword(s):  
Buzz Pollination ◽  
Optimal Frequency ◽  
Pollen Release

Pollination Syndromes: A Global Pattern of Convergent Evolution Driven by the Most Effective Pollinator

2015 ◽  
pp. 203-224 ◽  
Author(s):  
Lorena Ashworth ◽  
Ramiro Aguilar ◽  
Silvana Martén-Rodríguez ◽  
Martha Lopezaraiza-Mikel ◽  
Germán Avila-Sakar ◽  
...  
Keyword(s):  
Convergent Evolution ◽  
Pollination Syndromes ◽  
Global Pattern ◽  
Effective Pollinator

Types of Flower Visitors: Syndromes, Constancy, and Effectiveness

2011 ◽  
Author(s):  
Pat Willmer
Keyword(s):  
Adaptive Radiation ◽  
Convergent Evolution ◽  
Pollination Syndromes ◽  
Pollinator Effectiveness ◽  
Flower Constancy ◽  
Flower Visitors ◽  
Floral Constancy ◽  
Effective Pollinators

This chapter examines pollination syndromes, floral constancy, and pollinator effectiveness. Flowers show enormous adaptive radiation, but the same kind of flower reappears by convergent evolution in many different families. Thus many families produce rather similar, simple bowl-shaped flowers like buttercups; many produce similar zygomorphic tubular lipped flowers; and many produce fluffy flower heads of massed (often white) florets. These broad flower types are the basis of the idea of pollination syndromes—the flowers have converged on certain morphologies and reward patterns because they are exploiting the abilities and preferences of particular kinds of visitor. After providing an overview of pollination syndromes, the chapter explains why pollination syndromes can be defended. It then considers flower constancy, along with the distinction between flower visitors and effective pollinators. It concludes with some observations on how flower visitors can contribute to speciation of plants through specialization and through their constancy.

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