RESUMO
Foi realizada a descrição morfológica das inflorescências, bem como das flores pistiladas e estaminadas, de uma população de Astrocaryum aculeatum Meyer, no Campus do Instituto Nacional de Pesquisas da Amazônia - INPA. A inflorescência é do tipo panícula de espigas, pedunculada, interfoliar e apresenta tamanho médio de 146 ± 20,3 cm. Uma bráctea lenhosa provida de espinhos em toda superfície externa protege a inflorescência. Estas apresentam cerca de 375 ± 49,5 ráquilas. Foi estimado de 500 a 1.200 flores pistiladas e 190.000 a 260.000 flores estaminadas por inflorescência. As flores estaminadas apresentam um padrão de cores que variam do vinho ao creme e também com tons mesclados de vinho e creme.
Morphological descriptions are provided for inflorescences of pistillate and staminate flowers of a population of Astrocaryum aculeatum Meyer located on the campus of the Instituto Nacional de Pesquisas da Amazônia (INPA). The inflorescence is an interfoliar, panicle of spikelets, with a peduncle, and medium size of 146 ± 20.3 cm in length. Woody, thorny bracts are present on the entire external surface, protecting the inflorescence. Each inflorescence had approximately 375 ± 49.5 rachillae. Each inflorescence was estimated to have about 500 to 1.200 pistillate flowers and 190.000 to 260.000 staminate flowers. Staminate flowers varied in colouration from wine to cream and intermediate mixes of wine and cream.
Assuntos
Ecossistema Amazônico , FloraRESUMO
Durante el periodo de enero a abril de 2005 fueron encontradas semillas de Zygia racemosa, incorporadas al geoprópolis, en el interior de abejas sin aguijón en dos meliponarios experimentales en Manaus - AM. Fue observada intensa actividad de las obreras de M. seminigra merrillae y M. compressipes manaosensis llegando del campo con semillas fijas en las corbículas adheridas con resina y/o saliendo de las colonias con las semillas atrapadas en las mandíbulas. Ochenta semillas fueron recogidas en el interior de las colonias (mezcladas al geoprópolis en los basureros y fisuras) y también en el exterior, cerca de la entrada de las colonias, como resultado de la caída de esas semillas de las corbículas durante el vuelo de las obreras. Las semillas fueron plantadas en semilleros para la producción de esquejes y posterior identificación de la especie vegetal. Paralelamente se realizó el rastreo en campo en un radio de aproximadamente 3Km para la confirmación de la dispersión de las semillas, observaciones de comportamiento de las abejas forrajeando y recolección de semillas. Un total de 170 plántulas de Z. racemosa fueron encontradas en los alrededores del meliponario del GPA-INPA y 160 en el meliponario Vale Verde. Esos resultados indican que tanto M. compressipes manaosensis como M. seminigra merrillae recolectan y dispersan las semillas de Z. racemosa.
During the period from January to April 2005 seeds of Zygia racemosa were found incorporated in the nest structures, inside the colonies of stingless bee in two experimental meliponaries in Manaus - Am. It was registered an intense activity of the bee-workers of Melipona seminigra merrillae and M. compressipes manaosensis arriving from the field with seeds set in the corbiculae adhered with resin and/or leaving the colonies with the seeds clipped in their jaws. Eighty seeds were collected inside the colonies (mixed with the batume in the litter and/or cracks), and also outside them, near the entrance of the colony, as a result of the falling of corbiculae during the flight of the bee-workers. These seeds were planted in seedbeds for seedling production and posterior identification of the botanical species. As a way to confirm the scattering of the seeds, searches were done in the field (in an area of approximately 3km of extension), as well as observations of the collection of the seeds made by the bees. A total of 170 seedlings of Z. racemosa were found in the outskirts of the GPA-INPA meliponary and 160 in the Vale Verde meliponary. The results indicate that M. compressipes and M. seminigra collect and scatter the seeds of Z. racemosa.