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| Registros recuperados: 117 | |
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| Polfus, Jean L.; Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba, Canada; jeanpolfus@gmail.com; Manseau, Micheline; Office of the Chief Ecosystem Scientist, Parks Canada, Gatineau, Québec, Canada; Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba, Canada; Micheline.Manseau@pc.gc.ca; Bayha, Walter; Délı̨nę Land Corporation, Délı̨nę, Northwest Territories, Canada; nihtla321@gmail.com; Rice, Keren; Department of Linguistics, University of Toronto, Toronto, Ontario, Canada; rice@chass.utoronto.ca; Wilson, Paul; Biology Department, Trent University, Peterborough, Ontario, Canada; pawilson@trentu.ca. |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Aboriginal; Biocultural diversity; Biodiversity; Caribou; Collaborative research; Ecology; First Nation; Genetic variation; Indigenous communities; Population genetics; Population structure; Rangifer tarandus; Resource management; Social-ecological systems; Traditional knowledge. |
| Ano: 2016 |
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| Packer, Laurence; York University; bugsrus@yorku.ca; Owen, Robin; Mount Royal College and University of Calgary; rowen@mtroyal.ab.ca. |
| We reviewed the theory of conservation genetics, with special emphasis on the influence of haplodiploidy and other aspects of bee biology upon conservation genetic parameters. We then investigated the possibility that pollinator decline can be addressed in this way, using two meta-analytical approaches on genetic data from the Hymenoptera and the Lepidoptera. First, we compared levels of heterozygosity between the orders. As has been found previously, the haplodiploid Hymenoptera had markedly lower levels of genetic variation than the Lepidoptera. Bees had even lower levels, and bumble bees, in particular, often seemed almost monomorphic genetically. However, the statistically confounding effects of phylogeny render detailed interpretation of such data... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Bumble bees; Effective population size; Gene flow; Haplodiploidy; Heterozygosity; Hymenoptera; Lepidoptera; Meta-analysis; Pollinator decline; Population fragmentation; Population genetics. |
| Ano: 2001 |
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| Crnjac,Josip; Ozretić,Petar; Merkaš,Siniša; Ratko,Martina; Lozančić,Mateja; Korolija,Marina; Popović,Maja; Mršić,Gordan. |
| Abstract X chromosome STR typing has emerged recently as a powerful tool, complementary to autosomal STR typing, in solving complex forensic and missing person cases. Investigator® Argus X-12 is a commercial product that allows co-amplification of 12 X chromosomal markers belonging to four linkage groups (LGs). In this study, we analyzed by capillary electrophoresis blood samples from 100 females and 102 males from a population of northern Croatia. Statistical analysis included calculation of allele and haplotype frequencies, as well as forensic parameters. The most informative marker for the northern Croatia population was DXS10135 with PIC=0.9211 and a total of 27 alleles. The least polymorphic marker was DXS8378 with 6 alleles. The proportion of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: X-STR; Forensic genetics; Investigator® Argus X-12; Population genetics; Northern Croatia. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100080 |
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| 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 |
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| Hiragi,Cássia de Oliveira; Miranda-Vilela,Ana Luisa; Rocha,Dulce Maria Sucena; ,Silviene Fabiana de; Hatagima,Ana; Klautau-Guimarães,Maria de Nazaré. |
| Antioxidants such as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX1) reduce the oxidation rates in the organism. Gluthatione S-transferases (GSTs) play a vital role in phase 2 of biotransformation of many substances. Variation in the expression of these enzymes suggests individual differences for the degree of antioxidant protection and geographical differences in the distribution of these variants. We described the distribution frequency of CAT (21A/T), SOD2 (Ala9Val), GPX1 (Pro198Leu), GSTM1 and GSTT1 polymorphisms in three Brazilian population groups: Kayabi Amerindians (n = 60), Kalunga Afro-descendants (n = 72), and an urban mixed population from Federal District (n = 162). Frequencies of the variants observed in Kalunga... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidants; PCR-RFLP; Gene polymorphisms; Brazilian ethnicities; Population genetics; Pharmacogenetics. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100003 |
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| Caparroz,Renato; Mantellatto,Aline M.B.; Bertioli,David J.; Figueiredo,Marina G.; Duarte,José Maurício B.. |
| The complete mitochondrial genome of the brown brocket deer Mazama gouazoubira and a set of polymorphic microsatellite markers were identified by 454-pyrosequencing. De novo genome assembly recovered 98% of the mitochondrial genome with a mean coverage of 9-fold. The mitogenome consisted of 16,356 base pairs that included 13 protein-coding genes, two ribosomal subunit genes, 22 transfer RNAs and the control region, as found in other deer. The genetic divergence between the mitogenome described here and a previously published report was ∼0.5%, with the control region and ND5 gene showing the highest intraspecific variation. Seven polymorphic loci were characterized using 15 unrelated individuals; there was moderate genetic variation across most loci (mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Microsatellites; Mitogenome; Population genetics; 454-pyrosequencing. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300338 |
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| Tacuatiá,Luana Olinda; Eggers,Lilian; Kaltchuk-Santos,Eliane; Souza-Chies,Tatiana T.. |
| Sisyrinchium micranthum Cav. is a member of the family Iridaceae, which is distributed over the American continent. In Brazil, this species is found, not only in disturbed areas and coastal regions, but is also very common in urban centers, such as public parks, during the spring. Chromosome counts for North American specimens are 2n = 32 and 2n = 48, whereas in southern Brazil, there is a polyploidy series with three chromosome numbers, 2n = 16, 2n = 32, and 2n = 48. Population analyses using DNA molecular markers are inexistent for this species, in spite of its wide distribution and morphological variation. To study the genetic population structure of S. micranthum, five natural populations were accessed in a conservation park within the Atlantic Rain... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Iridaceae; ISSR-PCR; Mating system; Population genetics; Sisyrinchium micranthum. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100014 |
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| Voloch,Carolina Moreira; Solé-Cava,Antonio Mateo. |
| The sea-bob shrimp, Xiphopenaeus kroyeri, is one of the most important economic marine resources along the entire Brazilian coast. Nevertheless, despite its economic importance, no studies have examined the population genetics of this species. In this paper, we used ten allozyme loci to study the pattern of genetic structuring in X. kroyeri along the southeastern Brazilian coast. Seven of the ten analyzed loci were polymorphic, yielding observed heterozygosity values higher than those reported for other penaeid shrimps. The population from São Paulo was significantly different from the other two populations (Rio de Janeiro and Espírito Santo), which, in turn, seem to form a single panmitic unit. Therefore, our results clearly indicate that conservation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Population genetics; Allozyme electrophoresis; Fisheries stocks; Crustacea. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200013 |
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| López Soto,Eduardo Javier; Catanesi,Cecilia Inés. |
| Several single nucleotide polymorphisms (SNPs) in the Mu Opioid Receptor gene (OPRM1) have been identified and associated with a wide variety of clinical phenotypes related both to pain sensitivity and analgesic requirements. The A118G and other potentially functional OPRM1 SNPs show significant differences in their allele distributions among populations. However, they have not been properly addressed in a population genetic analysis. Population stratification could lead to erroneous conclusions when they are not taken into account in association studies. The aim of our study was to analyze OPRM1 SNP variability by comparing population samples of the International Hap Map database and to analyze a new population sample from the city of Corrientes,... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: OPRM1; SNPs; A118G; AMOVA; Population genetics. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000200152 |
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| Salzano,Francisco M.. |
| Abstract A brief introduction considering Darwin's work, the evolutionary synthesis, and the scientific biological field around the 1970s and subsequently, with the molecular revolution, was followed by selected examples of recent investigations dealing with the selection-drift controversy. The studies surveyed included the comparison between essential genes in humans and mice, selection in Africa and Europe, and the possible reasons why females in humans remain healthy and productive after menopause, in contrast with what happens in the great apes. At the end, selected examples of investigations performed in Latin America, related to the action of selection for muscle performance, acetylation of xenobiotics, high altitude and tropical forest adaptations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural selection; Human evolution; Population genetics; Human adaptation; History of genetics. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000300302 |
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| Abreu,Marcia Matos de; Pereira,Luiz Henrique Garcia; Vila,Vilma Barretto; Foresti,Fausto; Oliveira,Claudio. |
| Catfishes of the genus Pseudoplatystoma are very important species due to both their high commercial value and their ecological role as voracious predators. They undertake lengthy migratory movements during their life-cycle, this including reproductive migration which occurs from October to December in the rainy season. In the present study, seven microsatellite loci were analyzed to access genetic variability in two samples of P. reticulatum from the Upper Paraguay Basin. The loci were highly polymorphic (mean = 7.28). According to all analysis, the two samples of P. reticulatum revealed pronounced genetic differentiation. Fst value was 0.2290, Rst value 0.1067 and AMOVA 22.90% (Fst) and 10.67% (Rst), all being highly significant (p < 0.001). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Population genetics; Microsatellite; Homing; Population structure. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400032 |
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| Registros recuperados: 117 | |
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