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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Guilda de abelhas coletoras de ?leo (APOIDEA) associada ? Byrsonima sericea e Byrsonima cydoniifolia (Malpighiaceae)

Lua, Shantala 22 March 2013 (has links)
Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-03-23T23:54:57Z No. of bitstreams: 1 Disserta??o ShantalaLua.pdf: 1071615 bytes, checksum: 15159372342693f6876667ee25762bff (MD5) / Made available in DSpace on 2016-03-23T23:54:57Z (GMT). No. of bitstreams: 1 Disserta??o ShantalaLua.pdf: 1071615 bytes, checksum: 15159372342693f6876667ee25762bff (MD5) Previous issue date: 2013-03-22 / Floral oil-collecting bees have close relations with Malpighiaceae species. This study aims to characterize the bee guilds that visit two Byrsonima (Malpighiaceae) species and investigate if the variation in floral oil supply influences on the richness and local abundance of these bees in an area in Chapada Diamantina. Bees were collected using entomological nets during the visit to Byrsonima and the floral oil supply was estimated at 12 transects through the Byrsonima spp density and the amount of oil available per flower and per plant. A large variation in Byrsonima spp density was detected among the 12 transects sampled what resulted in differences in floral oil supply among transects (1320.4g-16397.2g). The sample was 638 individuals belonging to 34 Apoidea species, being 24 species components of the floral oil-collecting bee guild. Centridini was the tribe with the largest representation of species richness and in abundance. The richness and abundance of Centridini were positively correlated to both Byrsonima spp density and the amount of oil estimated to each transect. However, the richness and abundance of Tapinotaspidini and Tetrapediini didn?t correlate to Byrsonima spp density or the amount of oil estimated to each transect. / As abelhas coletoras de ?leos florais apresentam rela??es bastante estreitas com esp?cies de Malpighiaceae. Este estudo tem como objetivo caracterizar a guilda de abelhas que visitam duas esp?cies de Byrsonima (Malpighiaceae) e investigar se a varia??o na oferta de ?leo floral influencia na riqueza e abund?ncia local destas abelhas, em uma ?rea na Chapada Diamantina. As abelhas foram coletadas com redes entomol?gicas durante a visita ?s flores de Byrsonima e a oferta de ?leo floral foi estimada em 12 transectos, atrav?s das medidas de densidade de Byrsonima spp e da quantidade de ?leo disponibilizada por flor e por planta. Foi detectada uma grande varia??o na densidade de Byrsonima spp entre os 12 transectos amostrados, o que resultou em diferen?as na oferta de ?leos florais entre os transectos (1320,4g-16397,2g). Foram amostrados 638 indiv?duos, pertencentes a 34 esp?cies de Apoidea, sendo 24 esp?cies componentes da guilda de abelhas coletoras de ?leo. Centridini foi a tribo com maior representatividade, tanto em riqueza de esp?cies quanto em abund?ncia. A riqueza e abund?ncia de Centridini estiveram positivamente correlacionadas tanto com a densidade de Byrsonima spp quanto com a quantidade de ?leo estimada para cada transecto. Entretanto a riqueza e abund?ncia de Tapinotaspidini e Tetrapediini n?o apresentaram correla??o nem com a densidade de Byrsonima spp, nem com a quantidade de ?leo estimada para cada transecto.

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