Artigo

Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)

Bees visiting flowers of Bertholletia excelsa. (Brazil Nut tree) and Couratari tenuicarpa were collected, their behavior described and the pollen found clinging to their dorsal thorax and stored on their legs was identified. Female bees of Xylocopa frontalis(Olivier) and males of Eulaema mocsaryi (F...

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Autor principal: Nelson, Bruce Walker
Outros Autores: Absy, Maria Lúcia, Barbosa,e. M., Prance, G. Τ.
Grau: Artigo
Idioma: English
Publicado em: Acta Amazonica 2020
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/13738
id oai:repositorio:1-13738
recordtype dspace
spelling oai:repositorio:1-13738 Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae) Nelson, Bruce Walker Absy, Maria Lúcia Barbosa,e. M. Prance, G. Τ. Bees visiting flowers of Bertholletia excelsa. (Brazil Nut tree) and Couratari tenuicarpa were collected, their behavior described and the pollen found clinging to their dorsal thorax and stored on their legs was identified. Female bees of Xylocopa frontalis(Olivier) and males of Eulaema mocsaryi (Friese) are apparently effective pollinators of Couratari in igapó near Manaus. Female bees of Euplusia seabrai Moure in litt., Epicharis umbraculata (Fabricius), Epicharis rustica (Olivier) and Eulaema nigrita(Lepeletier), as well as male bees of Eulaema cingulata(Fabricius) and Eulaema nigrita are apparently effective pollinators of adult Brazil Nut trees in the Aleixo plantation near Manaus. Only large bees capable of uncurling the floral androecium can effectively pollinate Couratari or Bertholletia.Pollen analysis indicated that all bees captured carried pollen of the host tree in question and had been foraging on flowers of plant species common in secondary growth. Secondary growth near the Aleixo plantation supports a bee guild which appeared to effectively pollinate almost every flower on the Brazil Nut tree studied. Proximity to primary forest (and to those Euglossine bee species which occur only in primary forest) therefore does not appear to be necessary for pollination of Brazil Nut trees.In the Aleixo plantation chronic low fruit set is probably due to some factor other than pollination. Since natural occurrences of Brazil Nut trees to the north and south of Manaus are associated with a higher soil fertility, low production at the Aleixo plantation may be due to deficiencies of the soil. Foram estudadas as abelhas que visitavam flores de Bertholletia excelsa H. B. K. (castanheira) e Couratai tenuicarpa A.C. Smith. Foi descrito o comportamento dessas abelhas e identificados os grãos de pólen aderido à parte dorsal do tórax e nas patas. As abelhas femininas de Xylocopa frontalis (Olivier) e masculinas de Eulaema moesaryi (Friese) observadas em igapó próximo de Manaus, são aparentemente polinizadores de Couratari. As abelhas femininas de Euplusia seabrai Moure in litt., Epicharis umbraculata (Fabricius), Epicharis rustica(Olivier) and Eulaema nigrita (Lepeletier), bem como as abelhas masculinas de Eulaema cingulata (Fabricius) e Eulaema nigrita sao aparentemente polinizadores da castanheira estudada em uma plantação na Estrada do Aleixo, próximo a Manaus. Apenas as abelhas maiores, capazes de desenrolar o androceu floral, podem polinizar Couratari e Bertholletia.A análise polínica indicou que todas as abelhas capturadas transportavam pólen de Bertholletia ou Couratari. Os outros grãos de pólen encontrados nas abelhas provém de plantas de capoeira. Observamos que estas abelhas provém de plantas de capoeira. Observamos que estas abelhas comuns em capoeira visitaram praticamente todas as flores da castanheira permitindo assim, constatar que a presença de mata primária (e aquelas espécies de abelhas Euglossine restritas a mata primária) não é necessária para a polinização da castanheira.A baixa produção de frutos na plantação do Aleixo deve ser atribuida a outros fatores, e não a polinização. Uma vez que as ocorrências naturais de castanheiras na região estão associadas com melhores condições edáficas, essa baixa produção de frutos na plantação do Aleixo pode ser devido as deficiências do solo. 2020-04-24T15:41:53Z 2020-04-24T15:41:53Z 1985 Artigo https://repositorio.inpa.gov.br/handle/1/13738 10.1590/1809-43921985155234 en Volume 15, Pags. 225-234 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Acta Amazonica
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
description Bees visiting flowers of Bertholletia excelsa. (Brazil Nut tree) and Couratari tenuicarpa were collected, their behavior described and the pollen found clinging to their dorsal thorax and stored on their legs was identified. Female bees of Xylocopa frontalis(Olivier) and males of Eulaema mocsaryi (Friese) are apparently effective pollinators of Couratari in igapó near Manaus. Female bees of Euplusia seabrai Moure in litt., Epicharis umbraculata (Fabricius), Epicharis rustica (Olivier) and Eulaema nigrita(Lepeletier), as well as male bees of Eulaema cingulata(Fabricius) and Eulaema nigrita are apparently effective pollinators of adult Brazil Nut trees in the Aleixo plantation near Manaus. Only large bees capable of uncurling the floral androecium can effectively pollinate Couratari or Bertholletia.Pollen analysis indicated that all bees captured carried pollen of the host tree in question and had been foraging on flowers of plant species common in secondary growth. Secondary growth near the Aleixo plantation supports a bee guild which appeared to effectively pollinate almost every flower on the Brazil Nut tree studied. Proximity to primary forest (and to those Euglossine bee species which occur only in primary forest) therefore does not appear to be necessary for pollination of Brazil Nut trees.In the Aleixo plantation chronic low fruit set is probably due to some factor other than pollination. Since natural occurrences of Brazil Nut trees to the north and south of Manaus are associated with a higher soil fertility, low production at the Aleixo plantation may be due to deficiencies of the soil.
format Artigo
author Nelson, Bruce Walker
spellingShingle Nelson, Bruce Walker
Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)
author2 Absy, Maria Lúcia
Barbosa,e. M.
Prance, G. Τ.
author2Str Absy, Maria Lúcia
Barbosa,e. M.
Prance, G. Τ.
title Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)
title_short Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)
title_full Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)
title_fullStr Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)
title_full_unstemmed Observations on flower visitors to Bertholletia excelsa H.B.K. and Couratari tenuicarpa A.C. Sm. (Lecythidaceae)
title_sort observations on flower visitors to bertholletia excelsa h.b.k. and couratari tenuicarpa a.c. sm. (lecythidaceae)
publisher Acta Amazonica
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/13738
_version_ 1787145056558252032
score 11.755432

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