Consulta: subjectFacets:"Population genetic structure"
Registros recuperados: 7
Data/hora: 11/06/2024 05:24:28

Genetic polymorphisms and haplotypes of the organic cation transporter 1 gene (SLC22A1) in the Xhosa population of South Africa
Provedor de dados: 74
Autores: Jacobs,Clifford; Pearce,Brendon; Du Plessis,Mornè; Hoosain,Nisreen; Benjeddou,Mongi.
Human organic cation transporter 1 is primarily expressed in hepatocytes and mediates the electrogenic transport of various endogenous and exogenous compounds, including clinically important drugs. Genetic polymorphisms in the gene coding for human organic cation transporter 1, SLC22A1, are increasingly being recognized as a possible mechanism explaining the variable response to clinical drugs, which are substrates for this transporter. The genotypic and allelic distributions of 19 nonsynonymous and one intronic SLC22A1 single nucleotide polymorphisms were determined in 148 healthy Xhosa participants from South Africa, using a SNAPshot® multiplex assay. In addition, haplotype structure for SLC22A1 was inferred from the genotypic data. The minor allele...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polymorphism; Haplotype; Population genetic structure; Genotyping; Genetic variability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000300006

Reconstruction of major maternal and paternal lineages of the Cape Muslim population
Provedor de dados: 74
Autores: Isaacs,Shafieka; Geduld-Ullah,Tasneem; Benjeddou,Mongi.
The earliest Cape Muslims were brought to the Cape (Cape Town -South Africa) from Africa and Asia from 1652 to 1834. They were part of an involuntary migration of slaves, political prisoners and convicts, and they contributed to the ethnic diversity of the present Cape Muslim population of South Africa. The history of the Cape Muslims has been well documented and researched however no in-depth genetic studies have been undertaken. The aim of the present study was to determine the respective African, Asian and European contributions to the mtDNA (maternal) and Y-chromosomal (paternal) gene pool of the Cape Muslim population, by analyzing DNA samples of 100 unrelated Muslim males born in the Cape Metropolitan area. A panel of six mtDNA and eight Y-chromosome...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PCR-RFLP; Genetic polymorphism; Mitochondrial DNA; Population genetic structure; Chromosome variations.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000200005

Can Lutjanus purpureus (South red snapper) be "legally" considered a red snapper (Lutjanus campechanus)?
Provedor de dados: 74
Autores: Gomes,Grazielle; Schneider,Horacio; Vallinoto,Marcelo; Santos,Simoni; Orti,Guillermo; Sampaio,Iracilda.
Red snappers (Lutjanus purpureus in Brazil and Lutjanus campechanus in USA and Gulf of Mexico) are both under clear effect of overfishing. Because of their high morphological similarity it has already been suggested that they could possibly be considered as a single species. To investigate the degree of similarity and the genetic structure of red snapper populations we constructed a common dataset of partial D-loop mtDNA sequences of L. purpureus from Brazil (Amapá, Pará and Maranhão) and L. campechanus from the Atlantic coast of the USA (Florida, Louisiana and Mississippi). Phylogenetic and population genetic analyses surprisingly depicted high similarity between L. campechanus and L. purpureus, compatible with the hypothesis of a single species of red...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Red snapper; Lutjanus purpureus; Lutjanus campechanus; Population genetic structure; Mitochondrial D-loop.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200035

Genetic connectivity of the coral-eating sea star Acanthaster planci during the severe outbreak of 2006-2009 in the Society Islands, French Polynesia
Provedor de dados: 5
Autores: Yasuda, Nina; Taquet, Coralie; Nagai, Satoshi; Yoshida, Terutoyo; Adjeroud, Mehdi.
Occasional population outbreaks of the crown-of-thorns sea star, Acanthaster planci, are a major threat to coral reefs across the Indo-Pacific. The presumed association between the serial nature of these outbreaks and the long larval dispersal phase makes it important to estimate larval dispersal; many studies have examined the population genetic structure of A.planci for this purpose using different genetic markers. However, only a few have focused on reef-scale as well as archipelago-scale genetic structure and none has used a combination of different genetic markers with different effective population sizes. In our study, we used both mtDNA and microsatellite loci to examine A.planci population genetic structure at multiple spatial scales (from &lt;2km...
Tipo: Text
Palavras-chave: Acanthaster planci; Coral reefs; Microsatellite loci; MtDNA; Population genetic structure.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00667/77936/80151.pdf

Population Genetic Structure is Unrelated to Shell Shape, Thickness and Organic Content in European Populations of the Soft-Shell Clam Mya Arenaria
Provedor de dados: 5
Autores: De Noia, Michele; Telesca, Luca; Vendrami, David L. J.; Gokalp, Hatice K.; Charrier, Gregory; Harper, Elizabeth M.; Hoffman, Joseph I.
The soft-shell clam Mya arenaria is one of the most ancient invaders of European coasts and is present in many coastal ecosystems, yet little is known about its genetic structure in Europe. We collected 266 samples spanning a latitudinal cline from the Mediterranean to the North Sea and genotyped them at 12 microsatellite loci. In parallel, geometric morphometric analysis of shell outlines was used to test for associations between shell shape, latitude and genotype, and for a selection of shells we measured the thickness and organic content of the granular prismatic (PR), the crossed-lamellar (CL) and the complex crossed-lamellar (CCL) layers. Strong population structure was detected, with Bayesian cluster analysis identifying four groups located in the...
Tipo: Text
Palavras-chave: Mya arenaria; Soft-shell clam; Microsatellite; Population genetic structure; Phenotypic plasticity; Shell morphometrics.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00614/72600/71593.pdf

Population genetic structure of Schistosoma bovis in Cameroon
Provedor de dados: 5
Autores: Djuikwo-teukeng, Felicite Flore; Simo, Alain Kouam; Allienne, Jean-francois; Rey, Olivier; Ngapagna, Arouna Njayou; Tchuem-tchuente, Louis Albert; Boissier, Jerome.
BackgroundSchistosomiasis is neglected tropical parasitic disease affecting both humans and animals. Due to the human health impact, population genetic studies have focused on the three main human-infecting schistosome species: Schistosoma mansoni, S. haematobium and S. japonicum. Here we present novel data on the population genetic structure of Schistosoma bovis, a highly widespread and prevalent schistosome infecting ruminants, and therefore of veterinary importance.MethodsAdult S. bovis were sampled in the two main abattoirs of Cameroon (Yaounde and Douala). Twenty-two cows originating from four distinct localities were sampled and a total of 218 parasites were recovered. All parasites were genotyped using a panel of 14 microsatellite markers and a...
Tipo: Text
Palavras-chave: Schistosoma bovis; Barcoding; Population genetic structure.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00481/59267/62448.pdf

Molecular characterization of Iranian dromedaries using microsatellite markers
Provedor de dados: 109
Autores: Mohammadabadi.,Mohammadreza; Meymandi,Mehrdad Ghasemi; Montazen,Mahdieh; Afanasenko,Volodymyr; Kalashnyk,Oleksandr.
Abstract Considering the importance of maintaining the genetic diversity in native animals, this study conducted to analyse genetic diversity in dromedary populations in the north of Kerman province, Iran, using eight autosomal microsatellite markers. Eighty-one blood samples were collected from five different populations and DNA was extracted. The highest and the lowest alíele number and effective alíeles were shown in YWLL08 (21 and 4) and VOLP32 (14.97 and 3.11), respectively. The expected heterozygosity varied from 0.778 in Sahra-e Jahad population to 0.847 in Nogh population. The test for Hardy-Weinberg equilibrium showed significant deviations in most loci. The mean multilocus Fst value (0.057) suggested that differentiation is modérate between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic diversity; Iranian dromedary populations; Microsatellites; Population genetic structure.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122020000400321