Journal ArticleDOI
The Diascia (Scrophulariaceae) window: an orientation cue for oil-collecting bees.
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TLDR
Observations in natural and experimental situations suggest that the window of Diascia section Racemosae is used as an orientation cue by oil-collecting bees.About:
This article is published in Botanical Journal of the Linnean Society.The article was published on 1990-02-01. It has received 22 citations till now. The article focuses on the topics: Ultraviolet light.read more
Citations
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Journal ArticleDOI
Oil secretion and the pollination of Colpias mollis (Scrophulariaceae)
K. E. Steiner,V. B. Whitehead +1 more
TL;DR: The strongly congruent geographic distributions of C. mollis and R. albifasciata and their close morphological fit suggest a long and close association between plant and pollinator.
Journal ArticleDOI
Oil Collecting Bees Mostly of the Summer Rainfall Area of Southern Africa (Hymenoptera: Melittidae: Rediviva)
TL;DR: The species of Rediviva (Apoidea, Melittidae) occurring in the summer rainfall region of South Africa are revised and four are described as new: R. brunnea, R. rhodosoma and R. transkeiana all attributed to Whitehead and Steiner.
Solitary Bees ñ Conservation, Rearing and Management for Pollination
TL;DR: The international Centre for Integrated Mountain Development is trying to address the issues related to the declining pollinator populations through conducting research, raising awareness at all levels about the value of conserving pollinators and promoting use of honeybees for pollination, improving institutional capabilities and human resource development.
Journal ArticleDOI
Has Ixianthes (Scrophulariaceae) lost its special bee
TL;DR: Preliminary analysis indicates that the trichomes secrete a complex mixture of lipids, which suggests thatxianthes has lost, at least locally, its specialized pollinator.
Journal ArticleDOI
Interaction between oil-collecting bees and seven species of Plantaginaceae
TL;DR: The new records of Tapinotaspidini and Centridini species acting as specialized pollinators of Plantaginaceae suggest that there is a geographic variation in the pollinator of the same plant species, and that the evolutionary scenario of the historical relationships between oil-collecting bees and floral oil producing plants is more complex than previously considered.
References
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Journal ArticleDOI
Pigment distribution, light reflection and cell structure in petals
TL;DR: Petal structure and the distribution of pigments in petals were studied in relation to the functional anatomy of petals and the ways in which petals absorb and reflect light.
Reizmetrische Untersuchung des Farbensehens der Bienen
TL;DR: In this paper, the Bienensinn der Bienen is wesentlich leistungsfahiger, d. h., die Zahl der unterscheidbaren Farbtone is a groser als bisher angenommen: Auch innerhalb der Kuhnschen Hauptspektralbereiche, deren Existenz bestatigt wurde, sind die bienen zu echter Wellenlangenunterscheideung befahigt.
Blumenfarben, wie sie die Bienen sehen
TL;DR: In this paper, a quantitativ auswertbaren, fotografischen Methode in den 3 Grundspektralbereichen des Bienenfarbsystems (Gelb-, Blau-and UV-Bereich) gestattete auf Grund der Kompensativbeziehungen zwischen diesen Bereichen (Daumeb 1956) die ungefahre Berechnung von „BienenFarbton“ and „Unbunt
Journal ArticleDOI
Pollinator behaviour and natural selection for flower colour in Delphinium nelsonii
TL;DR: Evidence is presented that discrimination occurs because white flowers have inferior ‘nectar guides’ and therefore require longer handling times than blue flowers, and pollinators may experience lower net rates of energy intake on white flowers, a sufficient reason for undervisitation by optimally-foraging animals.
Journal ArticleDOI
Ultraviolet floral patterns as functional orientation cues in hymenopterous pollination systems
TL;DR: Morphological and physiological changes in the floral colour patterns of both species following pollination appear to inhibit visitation by bees, and the significance of U.V. floral patterns was also considered.
Related Papers (5)
Pollinator adaptation to oil-secreting flowers-rediviva and diascia.
Kim E. Steiner,V. B. Whitehead +1 more
Oil flowers and oil bees: further evidence for pollinator adaptation.
Kim E. Steiner,V. B. Whitehead +1 more