Journal ArticleDOI
Long pollinia on eyes: hawk‐moth pollination of Cynorkis uniflora Lindley (Orchidaceae) in Madagascar
L. Anders Nilsson,Elisabeth Rabakonandrianina,Rotaharivelo Razananaivo,Jean-Jacques Randriamanindry +3 more
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TLDR
The ratio between components of floral female and male functions within the orchid population suggested that the much elongated operative male floral parts result from strong and progressively extreme sex-specific selection for acquiring mates via hawk-moths.About:
This article is published in Botanical Journal of the Linnean Society.The article was published on 1992-05-01. It has received 50 citations till now. The article focuses on the topics: Pollinator & Orchidaceae.read more
Citations
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Journal ArticleDOI
Variation in sexual reproduction in orchids and its evolutionary consequences: a spasmodic journey to diversification
TL;DR: It is reaffirmed that orchids are primarily pollination limited, the severity of which is affected by resource constraints and population structure, reproductive success and gene flow among populations suggest that in many situations genetic drift may be as important as selection in fostering genetic and morphological variation in this family.
Journal ArticleDOI
Mechanisms and evolution of deceptive pollination in orchids
TL;DR: It is suggested that floral deception is particularly beneficial, because of its promotion of outcrossing, when pollinators are abundant, but that whenpollinators are consistently rare, selection may favour a nectar reward or a shift to autopollination.
Journal ArticleDOI
Long-tongued fly pollination and evolution of floral spur length in the Disa draconis complex (Orchidaceae)
Steven D. Johnson,Kim E. Steiner +1 more
TL;DR: In this paper, the authors tested the hypothesis that divergence in spur length has resulted from selection exerted through pollinator proboscis length and found that selection on spur length occurs mainly through the female component of reproductive success.
Book ChapterDOI
Biodiversity, species interactions and ecological networks in a fragmented world
Melanie Hagen,W. Daniel Kissling,Claus Rasmussen,Marcus A. M. de Aguiar,Lee E. Brown,Daniel W. Carstensen,Isabel Alves-dos-Santos,Yoko L. Dupont,Francois Edwards,Julieta Genini,Paulo R. Guimarães,Gareth B. Jenkins,Pedro Jordano,Christopher N. Kaiser-Bunbury,Mark E. Ledger,Kate P. Maia,Flavia Maria Darcie Marquitti,Orla McLaughlin,L. Patrícia C. Morellato,Eoin J. O'Gorman,Kristian Trøjelsgaard,Jason M. Tylianakis,Mariana Morais Vidal,Guy Woodward,Jens M. Olesen +24 more
TL;DR: Spatial and ecological networks need to be combined to explore the effects of dispersal, colonisation, extinction and habitat fragmentation on network structure and coevolutionary dynamics and embed network approaches more explicitly within applied ecology in general.
Journal ArticleDOI
The structure and function of orchid pollinaria
Steven D. Johnson,T. J. Edwards +1 more
TL;DR: Pollinaria ensure that large pollen loads are deposited on the stigma, thus enabling the fertilization of the large numbers of ovules in the flowers of Orchidaceae, and ensure efficient removal from the anther, minimal pollen wastage during transit, and a high probability of deposition on conspecific stigmas.
References
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Book
The Orchids: Natural History and Classification
TL;DR: A detailed examination of the structure, classification, evolution, and ecology of the Orchidaceae can be found in this paper, with 95 color photographs and 99 line drawings emphasizing orchid morphology.
Journal ArticleDOI
The evolution of flowers with deep corolla tubes
TL;DR: It was found that insects do indeed insert their probosces no further than necessary to obtain nectar; that an experimental reduction in flower depth reduces both the male and female components of fitness; and that in natural populations there is a correlation between flower depth and female fitness measured by fruit set.
Journal ArticleDOI
The production of dilute nectars by hummingbird and honeyeater flowers
Graham H. Pyke,Nickolas M. Waser +1 more
TL;DR: A survey of data from tropical and temperate regions confirms that nectars of hummingbird and honeyeater flowers are dilute, especially relative to nectar of bee flowers as mentioned in this paper.
Journal ArticleDOI
Processes of isolation and introgressive interplay between Platanthera bifolia (L.) Rich and P. chlorantha (Custer) Reichb. (Orchidaceae)
TL;DR: Platanthera bifolia and P. chlorantha are highly specialized for pollination by crepuscular and nocturnal Lepidoptera and are largely sympatric, have overlapping flowering-times, and are completely interfertile.