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Author Bolstad, Geir H. ♦ Armbruster, W. Scott ♦ Pélabon, Christophe ♦ Pérez-Barrales, Rocío ♦ Hansen, Thomas F.
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher Wiley
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Philosophy & psychology ♦ Psychology ♦ Social sciences ♦ Sociology & anthropology ♦ Natural sciences & mathematics ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Genetics and evolution ♦ Natural history of organisms ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Human physiology ♦ Incidence & prevention of disease ♦ Diseases
Subject Domain (in MeSH) Plant Structures ♦ Anatomy ♦ Eukaryota ♦ Organisms ♦ Psychological Phenomena and Processes ♦ Psychiatry and Psychology ♦ Genetic Phenomena ♦ Reproductive and Urinary Physiological Phenomena ♦ Biological Sciences ♦ Social Sciences ♦ Anthropology, Education, Sociology and Social Phenomena
Subject Keyword Discipline Botany ♦ Bees ♦ Physiology ♦ Brassicaceae ♦ Flowers ♦ Pollination ♦ Selection, Genetic ♦ Animals ♦ Anatomy & Histology ♦ Pollen ♦ Population Dynamics ♦ Quantitative Trait, Heritable ♦ Reward ♦ Seeds ♦ Growth & Development ♦ Journal Article ♦ Research Support, U.s. Gov't, Non-p.h.s.
Abstract â ¢ Both floral rewards and advertisements can be important in the attraction of pollinators, but few studies have separated the individual contributions of rewards and advertisements to fitness. â ¢ Here, we investigated selection by pollinators on individual blossoms in Dalechampia schottii. This Neotropical vine, endemic to the Yucatán Peninsula, rewards bees by secreting fully visible, deep-blue resin from a gland subtended by two conspicuous petaloid bracts that may play the role of advertisement. â ¢ We used contextual analysis to build a fitness function for four morphological traits of individual blossoms: the amount of the reward as measured by gland area; the size of the advertisement trait as measured by bract length; the flower-pollinator fit as measured by the shortest distance between reward and stigma; and the potential for self-pollination as measured by the shortest distance between anthers and stigma. â ¢ Larger gland area and increased potential for self-pollination directly increased the seed production of individual blossoms. However, bract size or flower-pollinator fit did not influence the number of seeds produced by blossoms. Therefore, in this Dalechampia species, pollinators seem to select directly on the reward of individual blossoms but not on the advertising bracts.
Description Country affiliation: Norway
Author Affiliation: Bolstad GH ( Department of Biology, Norwegian University of Science and Technology,Trondheim, Norway.
ISSN 0028646X
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2010-10-01
Publisher Place Great Britain (UK)
e-ISSN 14698137
Journal New Phytologist
Volume Number 188
Issue Number 2

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Source: WHO-Global Index Medicus