La merluza peruana (Merluccius gayi peruanus) sostiene una pesquería importante en el país. Actualmente la evaluación y manejo de este recurso asume la presencia de un solo stock en el mar norperuano, sin embargo, observaciones realizadas en 1997 sugieren la existencia de dos stocks, al norte y sur del paralelo 6°S. El objetivo del presente estudio es evaluar mediante el uso de marcadores mitocondriales la presencia de una o dos unidades poblacionales de merluza, para lo cual se amplificó la región de control mitocondrial parcial y completa, detectándose las variantes con dos técnicas Single Strand Conformational Polymorphism (SSCP) y secuenciamiento directo, respectivamente. Se observa una alta diversidad haplotípica y baja diversidad nucleotídica, con una escasa diferenciación y estructura genética, con la presencia de dos posibles líneas matrilineales yuxtapuestas geográ...

The Chub mackerel (Teleostei: Scombridae) supports an important fishery in the Southeastern Pacific, however, its population genetics status is currently unknown. In the present study the population genetic structure, gene flow and historical demography of this resource in the Northern Humboldt Current System were examined. Samples were collected between 2103 and 2014 from three fishing points off the Peruvian coast (Paita, Ventanilla and Ilo) and analyzed using mitochondrial D-Loop region sequences. A total of 29 polymorphic sites and 35 haplotypes were found in 72 individuals. Moderate haplotype diversity and very low levels of nucleotide diversity were found. Analysis of gene flow showed high levels of connectivity among sampling areas. Analysis of molecular variance, pairwise comparisons and genetic differentiation tests confirmed the lack of genetic structuring. These analyses sugge...

The Chub mackerel (Teleostei: Scombridae) supports an important fishery in the Southeastern Pacific, however, its population genetics status is currently unknown. In the present study the population genetic structure, gene flow and historical demography of this resource in the Northern Humboldt Current System were examined. Samples were collected between 2103 and 2014 from three fishing points off the Peruvian coast (Paita, Ventanilla and Ilo) and analyzed using mitochondrial D-Loop region sequences. A total of 29 polymorphic sites and 35 haplotypes were found in 72 individuals. Moderate haplotype diversity and very low levels of nucleotide diversity were found. Analysis of gene flow showed high levels of connectivity among sampling areas. Analysis of molecular variance, pairwise comparisons and genetic differentiation tests confirmed the lack of genetic structuring. These analyses sugge...

Objective: To determine the frequency of the C282T polymorphism of the NAT2 gene (N acetyltransferase) in Peruvian populations. Field work, focused on exploring genetic risk factor in Peruvian populations, which has influence in the response to drugs and malignancies aetiology. Material and Methods: Cross-sectional study. 166 voluntaries from Lima, Lambayeque, Apurimac, Puno, San Martin, Amazonas and Loreto were enrolled. The sampling was done by convenience and it was use the RFLP-PCR conventional technique was used. Results: The allele frequency were 54% (n=126) for C282 and 46% (n=106) for T282. For the T allele, by its orign , stand out 2 those which origins were Lima 42% (n=25), Amazonas 47% (n=16), San Martin 74% (n=28) and Apurimac 50% (n=13) (X , p>0.05). A global genotype frequency were 26.7% (n=31) for C282/C282, 56.0% (n=65) for C282/T282 and 17.2% (n=20) for T282/T282 (Har...