Consulta: creatorFacets:"Soares,Ademilson Espencer Egea"
Registros recuperados: 4
Data/hora: 01/06/2024 17:25:37

Genetic structure of drone congregation areas of Africanized honeybees in southern Brazil
Provedor de dados: 74
Autores: Collet,Thais; Cristino,Alexandre Santos; Quiroga,Carlos Fernando Prada; Soares,Ademilson Espencer Egea; Del Lama,Marco Antônio.
As yet, certain aspects of the Africanization process are not well understood, for example, the reproductive behavior of African and European honeybees and how the first Africanized swarms were formed and spread. Drone congregation areas (DCAs) are the ideal place to study honeybee reproduction under natural conditions since hundreds of drones from various colonies gather together in the same geographical area for mating. In the present study, we assessed the genetic structure of seven drone congregations and four commercial European-derived and Africanized apiaries in southern Brazil, employing seven microsatellite loci for this purpose. We also estimated the number of mother-colonies that drones of a specific DCA originated from. Pairwise comparison...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drone congregation area; Africanization; Honeybee reproduction; Population genetics.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400030

Genetic structure of honeybee populations from southern Brazil and Uruguay
Provedor de dados: 74
Autores: Diniz,Nilza Maria; Soares,Ademilson Espencer Egea; Sheppard,Walter Steve; Del Lama,Marco Antonio.
Apis mellifera scutellata was introduced to Brazil in 1956 and Africanized honeybee populations have now spread from Argentina to the southwestern United States. Temperate climatic restrictions seem to be a natural limit to Africanized honeybee expansion around parallels 35° to 40° SL. We used allozyme loci (Mdh-1 and Hk-1) and mtDNA haplotypes to characterize honeybee populations in southern Brazil and Uruguay and define a possible transition area between Africanized and European bees. Samples of 194 bee colonies were collected from ten localities between 30°-35° SL and 52°-59° WL. The mtDNA restriction patterns of these colonies were obtained through digestion of the mitochondrial genome by Eco RI, or by digestion by Bgl II and Xba I of the cytochrome B...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Africanized honeybees; Transition area; South America; MtDNA; Allozymes; Population genetics.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100008

Antiproliferative effects of Tubi-bee propolis in glioblastoma cell lines
Provedor de dados: 74
Autores: Borges,Kleiton Silva; Brassesco,María Sol; Scrideli,Carlos Alberto; Soares,Ademilson Espencer Egea; Tone,Luiz Gonzaga.
Propolis is a resin formed by a complex chemical composition of substances that bees collect from plants. Since ancient times, propolis has been used in folk medicine, due to its biological properties, that include antimicrobial, anti-inflammatory, antitumoral and immunomodulatory activities. Glioblastoma is the most common human brain tumor. Despite the improvements in GBM standard treatment, patients' prognosis is still very poor. The aim of this work was to evaluate in vitro the Tubi-bee propolis effects on human glioblastoma (U251 and U343) and fibroblast (MRC-5) cell lines. Proliferation, clonogenic capacity and apoptosis were analyzed after treatment with 1 mg/mL and 2 mg/mL propolis concentrations for different time periods. Additionally,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glioblastoma; Propolis; Temozolomide; U251; U343.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000200024

Longevity of africanized worker honey bees (Apis mellifera) carrying eye color mutant alleles
Provedor de dados: 63
Autores: Almeida,Rosana de; Soares,Ademilson Espencer Egea.
The dark coloration of insects eyes is attributed to the accumulation of the brown pigment insectorubin, a mixture of ommochromes, xanthommatin and several ommins, biosynthesized from tryptophan. When any of the events in the synthesis chain is interrupted, formation and accumulation of pigments other than insectorubin occurs, and a new eye color will appear. The aim of the present work is to evaluate the longevity of worker honey bees Apis mellifera, homozygous and heterozygous for the mutant alleles cream (cr), snow-laranja (s la) and brick (bk). Eye pigmentation and average longetivity of bees are very closely related. Mutant bees carrying lighter eye pigmentation are unable to return to the hive; there is, therefore, a close association between the eye...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eyes; Mutants; Cream; Snow-laranja; Brick.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200011