Reference : Bimodal pollination system in rare endemic Oncocyclus irises (Iridaceae) of Lebanon
Scientific journals : Article
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
Bimodal pollination system in rare endemic Oncocyclus irises (Iridaceae) of Lebanon
Monty, Arnaud mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Saad, Layla [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Mahy, Grégory mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Canadian Journal of Botany
NRC Research Press
Yes (verified by ORBi)
[en] Eucera ; pollination ; heat reward ; male solitary bees ; sheltering ; Xylocopa
[en] Pollination systems based on indirect rewards, such as heat and shelter, have seldom been studied. Plant-pollinator interactions were characterized in Iris cedretii Dinsmore ex Chaudhary and Iris sofarana subsp. kasruwana Dinsmore ex Chaudhary, rare endemic Lebanese Oncocyclus irises exhibiting potential adaptation to shelter pollination. Despite a diversity of floral visitors (47 species), only two groups of Anthophoridae male bees (Xylocopa spp. and Eucera spp.) could be considered as efficient pollinators on the basis of frequency of visits, visiting behaviour, and pollen load. Lebanese Oncocyclus irises showed a bimodal pollination system with (1) diurnal visits at low rates but with potentially large pollen transfers by Xylocopa bees, exhibiting a foraging-like behaviour, principally during warm periods of the day and (2) sheltering, especially Eucera male bees, during night and day when the weather is changeable. Refuge occurrence in flowers was more important during the night (27%) than during the day (12%) and, for daytime, during cloudy or windy than sunny conditions. It also varied depending on the exposure of floral tunnels. Visitation rates of both day-visiting Xylocopa and night-sheltering Eucera were negatively associated with an increase of the number of flowers per clump. No experimental evidence was found showing that the principal advantage for male bees to shelter in Iris flowers was to fly earlier in the morning.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
No part of the NRC Research Press electronic journals may be reproduced, stored, or transmitted in any form or by any means, without the written permission of the publisher, except as stated below.

Under the Canadian Copyright Act, individuals may download or print single copies of articles for personal research or study. Any person may reproduce short excerpts from articles in the journals for any purpose that respects the moral rights of authors, provided that the source is fully acknowledged. As a courtesy, the consent of authors of such material should be obtained directly from the author.

Authorization to reproduce items for other than personal research or study, as stated above, may be obtained via Access © upon payment of the copyright fee of $10.00 per copy.

NRC Research Press also extends certain additional rights to authors. (see Authors' Rights)

The above rights do not extend to copying or reproduction for general distribution, for advertising or promotional purposes, for creating new collective works, or for resale. For such copying or reproduction, arrangements must be made with NRC Research Press.

File(s) associated to this reference

Fulltext file(s):

Open access
Monty et al 2006.pdfPublisher postprint776.41 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.