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Related GMR Articles

06/30/2003
Colombia; Genetic structure; Isoenzymes; Population genetics; Psorophora columbiae; Psorophora toltecum

Two populations of the mosquito Psorophora columbiae from the central Andean area of Colombia and one population of Ps. toltecum from the Atlantic coast of Colombia were analyzed for 11 isoenzyme markers. Psorophora columbiae and Ps. toltecum are two of the main vectors of Venezuelan equine encephalitis. We found no conspicuous genetic differences between the two ... more

M. Ruiz-Garcia; D. Ramirez; F. Bello; D. Alvarez
06/20/2007
Canidae; Chrysocyon brachyurus; Cross-amplification; Domestic dog; Microsatellite; Population genetics

The maned wolf (Chrysocyon brachyurus) is the largest South American canid. Habitat loss and fragmentation, due to agricultural expansion and predatory hunting, are the main threats to this species. It is included in the official list of threatened wildlife species in Brazil, and is also protected by IUCN and CITES. Highly variable genetic markers such as microsatellites have ... more

D.C. Salim; A.A. Akimoto; C.B. Carvalho; S.F. Oliveira; C.K. Grisolia; J.R. Moreira; M.N. Klautau-Guimarães
03/22/2007
Brazil; Microsatellites; Mollusca; Mytilidae; Perna perna; Population genetics

Perna perna is the most important cultivated mussel of Santa Catarina, Brazil, sustaining an important economic input for many local families. Natural stocks of P. perna are depleted by the extraction of adults and seeds for consumption and culture. The aim of the present study was to use the microsatellite locus pms-2 to study the variation of the genetic ... more

K.T. Appio; L.I. Weber
08/07/2006
Anopheles oswaldoi s. l.; Brazilian Amazon; Malaria; Molecular taxonomy; mtDNA; Population genetics

Anopheles (Nyssorhynchus) oswaldoi (Peryassú, 1922) s. l., which has been incriminated as a potential human malaria vector in Western Brazilian Amazon, may constitute a cryptic species complex. However, the most recent study with isozymes indicated high similarity among samples from the States of Acre, Amazonas and Rondônia in the Brazilian Amazon. In the ... more

V.M. Scarpassa; J.E. Conn
08/18/2009
Dengue; Mitochondrial gene; Population genetics; Vector control

Aedes albopictus, a mosquito originally from Southeast Asia, is considered to be one of the main vectors of dengue fever, yel­low fever and other arboviruses. We examined the genetic variability and population structure of 68 individuals of Ae. albopictus collected from five neighborhoods of the city of Manaus, based on the mitochon­drial gene coding for NADH ... more

R.T. Maia; V.M. Scarpassa; L.H. Maciel-Litaiff; W.P. Tadei
07/28/2009
Evolutionary mechanism; Metazoan development; Molecular biology; Population genetics

It is a challenge to understand how development emerged as a mechanism to dismantle and dismiss the intromission of foreign parasites in order to consolidate a higher-level multicellular unit of selection where more heritable variations in fitness, required for complex organization, can be procured. Levels in biological hierarchy genes, networks of genes, chromosomes, cells, organisms, ... more

H.F. Hoenigsberg; C. Sanabria
07/14/2009
Genetic distance; Genome; Microsatellite; Molecular markers; Population genetics; Triticum aestivum

We investigated the genetic diversity of 63 wheat genotypes, composed of 48 accessions and 15 varieties, using 56 polymorphic simple sequence repeat primers. One hundred and eighty-six loci were found, with a mean of 131.26 alleles per locus. Cluster analysis based on microsatellite allelic diversity discrimi­nated the accessions and varieties into different clusters; genetic di­versity ... more

S. Ijaz; I.A. Khan
11/25/2008
Heterozygosity; Macroevolution; Neutral evolution; Phylogenetic autocorrelation; Phylogenetic comparative method; Population genetics

The amount of genetic variability in species and populations has been mainly related to microevolutionary forces operating in natural populations and the influence of phylogenetic processes for the distribution of genetic variability has been neglected. To investigate how the current genetic variability distribution depends on the genetic variability of ancestral species, we simulated the ... more

J. José; W.J. Puma-Villanueva; F.J. Von Zuben; J.A.F. Diniz-Filho
03/18/2008
Allele frequencies; Bolivian population; DNA typing; Forensic science; Population genetics; Short tandem repeat

Two hundred and sixty unrelated subjects who asked for paternity testing at two Bolivian Laboratories in La Paz and Santa Cruz were studied. The loci D3S1358, vWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820, TH01, TPOX, and CSF1PO were typed from blood samples, amplifying DNA by polymerase chain reactions and electrophoresis. Allele frequencies were estimated by simple counting and ... more

L. Cifuentes; H. Jorquera; M. Acuña; J. Ordóñez; A.L. Sierra
11/09/2011
Crab; Diversity; DNA amplification; Molecular markers; Population genetics

We used single primer-based DNA markers to assess genetic variability of the mangrove crab, Ucides cordatus, collected from four different localities from Pará to Santa Catarina States in Brazil (almost 5000 km distant). Five primers were chosen based on the consistency of the amplified bands and the polymorphism of each locus. A total of 78 loci were amplified in 76 samples; ... more

F.B. Britto; D.S.F. Mendes; M. Ogawa; I.H.A. Cintra; F.M. Diniz

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