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Artículo

Is the variation of floral elaiophore size in two species of Stigmaphyllon (Malpighiaceae) dependent on interaction with pollinators?

Torretta, Juan PabloIcon ; Aliscioni, Sandra SilvinaIcon ; González Arzac, AdeliaIcon ; Avalos, Adan AlbertoIcon
Fecha de publicación: 11/2017
Editorial: Taylor & Francis Ltd
Revista: Plant Ecology & Diversity
ISSN: 1755-0874
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Background: Intraspecific variations in floral traits of species over its geographic range can be associated with differences in pollinator assemblages and/or with environmental conditions. Aims: We evaluated the area of elaiophores in different populations of Stigmaphyllon bonariense (n = 9) and S. jatrophifolium (n = 6), and we hypothesised a marked reduction in their size towards their southern limits of distribution, associated with different oil-collecting bee assemblages. Methods: Area of elaiophores was calculated and we carried out linear correlations with floral size, pollinators, visitation rate and pollinator size along the latitudinal gradient of the plants’ distributions. Moreover, we examined the relative size relationships using allometric analyses, to verify this reduction. Results: Floral elaiophore area decreased with latitude. However, for S. bonariense we observed an allometric reduction in elaiophore area with respect to floral size, while for S. jatrophifolium an isometric reduction was found. In both species, pollinator richness and visitation rate did not diminish with latitude, but pollinator size for S. bonariense varied. Conclusions: Our results show a reduction in the size of elaiophores in both species along their distribution range, with dissimilar tendencies, suggesting that these species may have different selection pressures that cause variation of their phenotypic traits.
Palabras clave: Elaiophore , Flower-Bee Interaction , Malpighiaceae , Oil-Collecting Bees , Oil-Rewarding Flowers
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/65806
DOI: https://dx.doi.org/10.1080/17550874.2018.1434567
URL: https://www.tandfonline.com/doi/abs/10.1080/17550874.2018.1434567
Colecciones
Articulos(IBODA)
Articulos de INST.DE BOTANICA DARWINION (I)
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos(OCA PQUE. CENTENARIO)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA PQUE. CENTENARIO
Citación
Torretta, Juan Pablo; Aliscioni, Sandra Silvina; González Arzac, Adelia; Avalos, Adan Alberto; Is the variation of floral elaiophore size in two species of Stigmaphyllon (Malpighiaceae) dependent on interaction with pollinators?; Taylor & Francis Ltd; Plant Ecology & Diversity; 10; 5-6; 11-2017; 403-418
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