Consulta: creatorFacets:"Freitas,Breno M."
Registros recuperados: 4
Data/hora: 11/06/2024 12:30:46

Internal ambience of bee colonies submitted to strengthening management by adding broods
Provedor de dados: 70
Autores: Brasil,Daniel de F.; Guimarães,Michelle de O.; Barbosa Filho,José Antonio D.; Freitas,Breno M.
This study aimed to investigate the ideal brood area to be introduced for strengthening Apis mellifera colonies, considering variations in the hive's internal ambience. Therefore, eight colonies were equipped with data loggers for recording variations in temperature and humidity inside the hives. Then, these colonies were split in four treatments involving the swapping of four, three, two and one brood comb between strong and weak colonies. Growth in the amount of brood and food stores to the four colony strengthening treatments was assessed counting the comb cells to record changes in the brood and food area. The colonies tended to restore their normal thermoregulation within four hours after they had been manipulated and the hive cover had been closed,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colony homeostasis; Thermal comfort; Colony management.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000500002

Do euglossine females reside in a single nest? Notes on Euglossa cordata (Hymenoptera: Apidae: Euglossini)
Provedor de dados: 76
Autores: Nogueira,David S.; Cavalcante,Arianne M.; Parente,Maria da C.; Pacheco Filho,Alipio J. S.; Freitas,Breno M.
ABSTRACT Euglossa Latreille, 1802 do not live in large colonies, and these are usually maintained or “reactivated” by new females, subordinate to their mother, which construct and provision brood cells. This study aimed to obtain information about the natural history of Euglossa cordata (Linnaeus, 1758) specially focusing on nest behavior. Our specific objective was to answer the following question: do E. cordata females reside in a single nest? We construct 14 artificial nesting boxes and made them available for E. cordata bees in natural environment for seven months. During this time, we use a re-marking method to identify bee fidelity to a single nest box. More specifically, we record bee permanence in the nests, the time bees take to provision brood to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Female nest fidelity; Bee emergence; Orchid bee.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100216

Chemical composition, botanical evaluation and screening of radical scavenging activity of collected pollen by the stingless bees Melipona rufiventris (Uruçu-amarela)
Provedor de dados: 42
Autores: Silva,Tania M.S.; Camara,Celso A.; Lins,Antonio C.S.; Agra,Maria de Fátima; Silva,Eva M.S.; Reis,Igor T.; Freitas,Breno M.
Stingless bees in Brazil are indigenous and found all over the country. Bee pollen is used for its nutritional value in the human diet. It is made up of natural flower pollen mixed with nectar and bee secretions. In order to evaluate the chemical composition, free radical scavenging activity, and botanical origin, sample of pollen loads from stingless bee, Melipona rufiventris (Uruçu amarela) was studied. The EtOAc extract of pollen of Melipona rufiventris yielded the following compounds: p-hydroxycinnamic acid, dihydroquercetin, isorhamnetin, isorhamnetin3-O-(6"-O-E-p-coumaroyl)-β-D-glucopyranoside, luteolin, and quercetin. This is the first report of the isolation of isorhamnetin3-O-(6"O-E-p-coumaroyl)β-D-glucopyranoside from pollen. The free...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Bee pollen; Flavonoids; Melipona rufiventris; Uruçu amarela.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200003

Apis mellifera pollination improves agronomic productivity of anemophilous castor bean (Ricinus communis)
Provedor de dados: 42
Autores: Rizzardo,Rômulo A.G.; Milfont,Marcelo O.; Silva,Eva M.S. da; Freitas,Breno M.
Castor bean (Ricinus communis L.) is cultivated mainly for biodiesel production because of its oil-rich seeds; it is assumed to be an anemophylous species. But pollination deficit can lead to low productivity often attributed to other reasons. In this paper, we investigated pollination requirements, pollination mechanism, occurrence of pollination deficit, and the role of biotic pollinators in a large commercial plantation of castor bean. Our results show that R. communis bears a mixed breeding system favoring selfing by geitonogamy, although the wind promotes mostly outcrossing. We also found that the honey bee (Apis mellifera L.) foraging on castor bean can both transfer pollen from male to female flowers within the same raceme and boost the release of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oleaginous crop; Pollination deficit; Pollination requirements; Seed yield; Wind insect-assisted pollination.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400028