cargas polínicas de abelhas polinizadoras de byrsonima chrysophylla kunth. (malpighiaceae): fidelidade e fontes alternativas de recursos florais pollen loads of pollinator bees of byrsonima chrysophylla kunth. (malpighiaceae): fidelity and alternative sources of flower resources

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2008
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Abstract
Byrsonima chrysophylla, conhecida popularmente como murici pitanga, é uma espécie arbustiva que ocorre em restinga. Dentre seus visitantes, além de abelhas da tribo Centridini, também se encontram com freqüência abelhas Xylocopini. Para verificação das espécies vegetais utilizadas pelas abelhas visitantes mais freqüentes, cargas polínicas de suas pernas posteriores (n = 5), bem como de ninhos naturais de Centris caxiensis (n = 7) foram analisados através de acetólise. Durante toda a floração, Byrsonima chrysophylla foi a principal fonte de pólen utilizada por suas abelhas visitantes. Comolia lythrarioides e Myrcia obtusa foram fontes secundárias de pólen, Mouriri guianensis foi fonte secundária de óleo e pólen, enquanto Anacardium microcarpum, Cuphea tenella, Matayba discolor e Phthirusa pyrifolia mostraram-se importantes fontes de néctar durante esse período, sendo o pólen detectado nas amostras, provavelmente aderido ao corpo das abelhas durante a coleta de néctar. Os resultados demonstram que as abelhas visitantes não misturaram os recursos polínicos durante o vôo para a coleta de pólen, apresentando fidelidade às flores de Byrsonima chrysophylla.
Byrsonima chrysophylla, known as "murici pitanga", is a shrubby species occurring in 'restinga'. Among its visitors, bees of the Centridini tribe as well as Xylocopini bees are frequently found. To detect which plant species have been used by the most frequent visitors, pollen loads from the back legs (n = 5) and also from natural nests of Centris caxiensis (n = 7) were treated by acetolysis. During flowering of Byrsonima chrysophylla, this plant species was the main pollen source used by bees. Comolia lythrarioides and Myrcia sylvatica were secondary pollen sources, Mouriri guianensis was a secondary oil and pollen source, while Anacardium microcarpum, Cuphea tenella, Matayba discolor and Phthirusa pyrifolia were important nectar sources at this time. The pollen detected in the samples probably adhered to the bee's body during nectar collection. The results show that the bee visitors do not mix pollen sources during the pollen-collecting flight, thus representing fidelity to Byrsonima chrysophylla flowers.
Reference Key
ribeiro2008actacargas Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Éville Karina Maciel Delgado Ribeiro;Márcia Maria Corrêa Rêgo;Isabel Cristina Sobreira Machado
Journal monatshefte für chemie chemical monthly
Year 2008
DOI
10.1590/S0102-33062008000100017
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000100017
Keywords
pollen Polen

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