Floral diversity and pollination strategies of three rheophytic Schismatoglottideae (Araceae)

Low, Shook Ling; Wong, Sin Yeng; Ooi, Im‐Hin; Hesse, Michael; Städler, Yannick; Schönenberger, Jürg; Boyce, Peter C.

doi:10.1111/plb.12320

Cited by 14 publications

(18 citation statements)

References 47 publications

(83 reference statements)

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“…Furthermore, generalist plants may have converged in floral colouration, yet can be specialist in e.g. floral morphology (Eaton et al 2012;Low et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Competition for pollinators and intra‐communal spectral dissimilarity of flowers

et al. 2015

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Competition for pollinators occurs when, in a community of flowering plants, several simultaneously flowering plant species depend on the same pollinator. Competition for pollinators increases interspecific pollen transfer rates, thereby reducing the number of viable offspring. In order to decrease interspecific pollen transfer, plant species can distinguish themselves from competitors by having a divergent phenotype. Floral colour is an important signalling cue to attract potential pollinators and thus a major aspect of the flower phenotype. In this study, we analysed the amount of spectral dissimilarity of flowers among pollinator-competing plants in a Dutch nature reserve. We expected pollinator-competing plants to exhibit more spectral dissimilarity than non-competing plants. Using flower visitation data of 2 years, we determined the amount of competition for pollinators by different plant species. Plant species that were visited by the same pollinator were considered specialist and competing for that pollinator, whereas plant species visited by a broad array of pollinators were considered non-competing generalists. We used principal components analysis to quantify floral reflectance, and found evidence for enhanced spectral dissimilarity among plant species within specialist pollinator guilds (i.e. groups of plant species competing for the same pollinator). This is the first study that examined intra-communal dissimilarity in floral reflectance with a focus on the pollination system.

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“…Furthermore, generalist plants may have converged in floral colouration, yet can be specialist in e.g. floral morphology (Eaton et al 2012;Low et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Competition for pollinators and intra‐communal spectral dissimilarity of flowers

et al. 2015

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“…Floral parts were dissected and dehydrated with a series of graded ethanol to absolute ethanol, and preserved in pure acetone (Low et al. ). Specimens were dried in a critical point drier (Autosamdri‐815), using CO 2 as a transitional medium, mounted on metal stubs, and sputter‐coated with gold.…”

Section: Methodsmentioning

confidence: 99%

“…Mature flowers were fixed in FAA fixative solution (50% alcohol, 10% formaldehyde, 5% acetic acid, 35% water) and preserved in 70% ethanol. Floral parts were dissected and dehydrated with a series of graded ethanol to absolute ethanol, and preserved in pure acetone (Low et al 2015). Specimens were dried in a critical point drier (Autosamdri-815), using CO 2 as a transitional medium, mounted on metal stubs, and sputter-coated with gold.…”

Section: Floral Biology and Insect Visitorsmentioning

confidence: 99%

Floral biology of Scaphochlamys (Zingiberaceae) focusing on Bornean taxa

Ooi

Wong

2019

Feddes Repertorium

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An overview of the floral biology including floral odour analyses of twenty‐two Bornean Scaphochlamys taxa and three ex Bornean Scaphochlamys taxa was undertaken. All Scaphochlamys species investigated bloom diurnally. Pollen is released gradually, either simultaneously with stigma secretion or later (mostly within one hour). Flowers of most Scaphochlamys species were found to emit a mild odour but a few are odourless. Stigmas and anther spurs (where present) differ among the taxa investigated. Natural fruit set percentages of all species investigated were very low, up to 14.29%. Scaphochlamys species are facultatively xenogamic as the pollen/ovule ratios (P/O ratios) were high. Analysis of floral odour revealed 102 identifiable floral volatile organic compounds (VOCs), representing 31.8% of the compounds found. The volatile fraction was characterized by the aliphatics class (21.5%), monoterpenes (3.4%), irregular terpenes (0.3%) and benzenoids and phenyl propanoids (0.6%). Two pollinator guilds were found: halictid bees and Amegilla bees.

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“…The constriction in the spathe between the staminate and pistillate regions of the spadix is seen in many genera of Araceae (Bröderbauer et al, 2012;Wong et al, 2013). Spathe constriction facilitates effective pollination by specifi c insects (e.g., Takenaka, 2006;Bröderbauer et al, 2014) but restricts access by non-pollinators to the pistillate region (e.g., Takano et al, 2012) by functioning as a sieve (Low et al, 2016). The spathe is swollen below the constriction (Figs S5B, S9, S10).…”

Section: Plant-pollinator Interactions In Homalomeneae: a Short Reviewmentioning

confidence: 99%

A review of taxonomy and flower-breeding ecology of the Colocasiomyia toshiokai species group (Diptera: Drosophilidae), with description of a new species from Indonesia

Shi¹,

Toda²,

Takano³

et al. 2019

Eur. J. Entomol.

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Flies of the Colocasiomyia toshiokai species group depend exclusively on infl orescences/infructescences of the aroid tribe Homalomeneae. The taxonomy and reproductive biology of this group is reviewed on the basis of data and samples collected from Southeast Asia. The species boundaries are determined by combining morphological analyses and molecular species delimitation based on sequences of the mitochondrial COI (cytochrome c oxidase subunit I) gene. For the phylogenetic classifi cation within this species group, a cladistic analysis of all the member species is conducted based on 29 parsimony-informative, morphological characters. As a result, six species are recognised within the toshiokai group, including one new species, viz. C. toshiokai, C. xanthogaster, C. nigricauda, C. erythrocephala, C. heterodonta and C. rostrata sp. n. Various host plants are utilised by these species in different combinations at different localities: Some host plants are monopolized by a single species, while others are shared by two or three species. C. xanthogaster and C. heterodonta cohabit on the same host plant in West Java, breeding on spatially different parts of the spadix. There is a close synchrony between fl ower-visiting behaviour of fl ies and fl owering events of host plants, which indicate an intimate pollination mutualism.

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Floral diversity and pollination strategies of three rheophytic Schismatoglottideae (Araceae)

Cited by 14 publications

References 47 publications

Competition for pollinators and intra‐communal spectral dissimilarity of flowers

Competition for pollinators and intra‐communal spectral dissimilarity of flowers

Floral biology of Scaphochlamys (Zingiberaceae) focusing on Bornean taxa

A review of taxonomy and flower-breeding ecology of the Colocasiomyia toshiokai species group (Diptera: Drosophilidae), with description of a new species from Indonesia

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