Long Tongues and Loose Niches: Evolution of Euglossine Bees and Their Nectar Flowers 1

ABSTRACT I examined relationships between tongue length of orchid bees (Apidae: Euglossini) and nectar spur length of their flowers in the genera Calathea , Costus , and Dimerocostus using phylogenetically independent contrasts. Long‐tubed flowers have specialized on one or several species of long‐t...

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Bibliographic Details
Published inBiotropica Vol. 37; no. 4; pp. 664 - 669
Main Author Borrell, Brendan J.
Format Journal Article
LanguageEnglish
Published 01.12.2005
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Summary:ABSTRACT I examined relationships between tongue length of orchid bees (Apidae: Euglossini) and nectar spur length of their flowers in the genera Calathea , Costus , and Dimerocostus using phylogenetically independent contrasts. Long‐tubed flowers have specialized on one or several species of long‐tongued euglossine bees, but long‐tongued bees have not specialized on long‐tubed flowers. Whereas long tongues may have evolved to provide access to a wider variety of nectar resources, long nectar spurs may be a mechanism for flowers to conserve nectar resources while remaining attractive to traplining bee visitors. RESUMEN Examiné la relación entre la longitud de las lenguas de las abejas de orchídeas (Apidae: Euglossini) y la profundidad de las flores en los generos Calathea , Costus , y Dimerocostus usando un análisis filogenético de contrastes independientes. Las flores de tubos largos se han especializado en una o más especies de abejas Euglossinis con lenguas largas, pero las abejas de lengua larga no se han especializado en flores de tubos largos. Lenguas largas en las abejas probablemente han sido seleccionado para facilitar el acceso a diversas fuentes de néctar, mientras que en las flores, tubos largos podrian ser un mecanismo para conservar néctar, y a la vez, manteniendose attractivas a las abejas de forajeo “traplining.”
ISSN:0006-3606
1744-7429
DOI:10.1111/j.1744-7429.2005.00084.x