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| Viana,Jaqueline Lemos; Sousa,Henrique de Abreu Cerqueira; Alves,Rogério Marcos de Oliveira; Pereira,Derval Gomes; Silva Jr.,Juvenal Cordeiro; Paixão,Joana Fidelis da; Waldschmidt,Ana Maria. |
| Melipona mondury Smith 1863 is an important stingless bee species pollinator and honey/pollen producer, but threatened by fragmentation of habitats throughout its range. This article presents the identification and partial characterization of nesting substrates, bionomic including population features of M. mondury by comparing data between nest architecture of natural beehive and boxes colonies. Nineteen colonies (13 in boxes and six in beehives) were analyzed with regards to substrate nesting, nest characteristics (e.g. length and width of the combs, height and diameter of the pollen and honey jar) and bee population. The average volume and diameter of the trunks cavities used for nesting of M.mondury were18.4 L and 15.8 cm; the average number of combs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Nest architecture; Nesting substrate; Rational management; Stingless bees. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000300102 |
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| Medrado,Aline Souza; Figueiredo,Alba Vivian Amaral; Waldschmidt,Ana Maria; Affonso,Paulo Roberto Antunes de Mello; Carneiro,Paulo Luiz Souza. |
| In the present work, morphometric and cytogenetic analyses were carried out in populations of the fish Astyanax fasciatus (Characidae) from Contas and Recôncavo Sul River basins (State of Bahia, Brazil), providing new data on the genetic structure of this species along the region. Based on morphologic measurements, we observed that populations from the same hydrographic basin were more similar to each other (Contas and Preto do Costa Rivers), and remarkably divergent from Recôncavo Sul (Mineiro Stream), as indicated by clustering analysis. Cytogenetic data revealed a same diploid number for all populations (2n = 48), but distinct karyotype formulae (8M+24SM+12ST+4A, FN = 92 in Contas River, 8M+24SM+10ST+6A, FN = 90 in Preto do Costa River, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canonic variables; Karyotype; Morphometry; NOR. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200007 |
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| Domingues,Alayne Magalhães Trindade; Waldschmidt,Ana Maria; Andrade,Sintia Emmanuelle; Andrade-Souza,Vanderly; Alves,Rogério Marco de Oliveira; Silva Junior,Juvenal Cordeiro da; Costa,Marco Antônio. |
| Although many species of the genus Trigona have been taxonomically described, cytogenetic studies of these species are still rare. The aim of the present study was to obtain cytogenetic data by conventional staining, C banding and fluorochrome staining for the karyotype characterization of the species Trigona fulviventris. Cytogenetic analysis revealed that this species possesses a diploid chromosome number of 2n = 32, different from most other species of this genus studied so far. This variation was probably due to the centric fusion in a higher numbered ancestral karyotype, this fusion producing the large metacentric chromosome pair and the lower chromosome number observed in Trigona fulviventris. Heterochromatin was detected in the pericentromeric... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cytogenetics; Heterochromatin; Evolution; Stingless bees. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300009 |
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| Martins,Cinthia Caroline Cardoso; Duarte,Olivia Maria Pereira; Waldschmidt,Ana Maria; Alves,Rogério Marco de Oliveira; Costa,Marco Antônio. |
| Cytogenetic analyses of the stingless bee Partamona helleri collected in the state of Bahia, Northeast Brazil revealed the chromosome numbers n = 18 in the haploid males and 2n = 35 in the diploid females. All karyotypes displayed one large acrocentric B chromosome, which differs from the minute B chromosomes previously described in the populations from southeastern Brazil. Giemsa staining, C-banding and DAPI/CMA3 fluorochrome staining also revealed a remarkable interpopulational divergence regarding both the regular karyotype and the B chromosomes. The B chromosomes found in the samples from Jequié, Bahia, were entirely heterochromatic, while those found in Cravolândia, Bahia, displayed a euchromatic portion at the telomeric end of the long arm. CMA3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stingless Bee; Partamona helleri; Geographic variation; Supernumerary chromosomes. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400019 |
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