87 research outputs found

    Use of waist to hip ratio in the determination of the body composition in preschool children in Latvian population

    Get PDF
    According to the World Health Organization (WHO), in 2008, the waist to hip ratio (WHR) has been suggested superior to the body mass index (BMI) in predicting the cardiovascular disease risk in adults and adolescents. There have been studies about the WHR in preschool children in the populations of Pakistan, Chile and Mexico; and it is not the WHO which recommended it as a routine method in preschool children.The present study includes 85 children (41 girls and 44 boys), aged 5 to 7 years, without any chronic conditions. Body height, body weight, waist circumference, hip circumference, triceps skinfold, abdominal skinfold and subscapular skinfold were measured. The WHR, the BMI, the sum of three skinfolds and the percentage of body fat (%BF) were calculated.It was found that the WHR decreased with age in girls; there were no specific changes found in the WHR with age in boys. The present study found no correlation in boys or girls between the WHR and the BMI; the WHR and the sum of three skinfolds; the WHR and the percentage of BF. There was also no correlation between the Z-scores of the BMI and Z-scores of the WHR.Conclusions. The WHR is a questionable body composition marker in preschool children in the Latvian population and must be evaluated separately from other body composition markers

    Size-related QTL identified in two families (CC5 and CC10) of bay scallop.

    No full text
    <p>SL, shell length; SH, shell height; TW, total weight; PVE, percentage of phenotypic variance explained by the QTL; association between four parental genotypes (f1m1, f2m1, f1m2, f2m2) of markers nearest each QTL peak and mean phenotypic values of each trait was tested by Kruskal-Wallis analysis.</p>#<p>Confidence interval at 95% significance;</p>†<p>linkage-group-wide;</p>‑<p>genome wide;</p><p>*P<0.1, **<i>P</i><0.05, *** <i>P</i><0.01, ****<i>P</i><0.005, ***** <i>P</i><0.001.</p

    A Consensus Microsatellite-Based Linkage Map for the Hermaphroditic Bay Scallop (<em>Argopecten irradians</em>) and Its Application in Size-Related QTL Analysis

    Get PDF
    <div><p>Bay scallop (<em>Argopecten irradians</em>) is one of the most economically important aquaculture species in China. In this study, we constructed a consensus microsatellite-based genetic linkage map with a mapping panel containing two hybrid backcross-like families involving two subspecies of bay scallop, <em>A. i. irradians</em> and <em>A. i. concentricus</em>. One hundred sixty-one microsatellite and one phenotypic (shell color) markers were mapped to 16 linkage groups (LGs), which corresponds to the haploid chromosome number of bay scallop. The sex-specific map was 779.2 cM and 781.6 cM long in female and male, respectively, whereas the sex-averaged map spanned 849.3 cM. The average resolution of integrated map was 5.9 cM/locus and the estimated coverage was 81.3%. The proportion of distorted markers occurred more in the hybrid parents, suggesting that the segregation distortion was possibly resulted from heterospecific interaction between genomes of two subspecies of bay scallop. The overall female-to-male recombination rate was 1.13∢1 across all linked markers in common to both parents, and considerable differences in recombination also existed among different parents in both families. Four size-related traits, including shell length (SL), shell height (SH), shell width (SW) and total weight (TW) were measured for quantitative trait loci (QTL) analysis. Three significant and six suggestive QTL were detected on five LGs. Among the three significant QTL, two (<em>qSW-10</em> and <em>qTW-10</em>, controlling SW and TW, respectively) were mapped on the same region near marker <em>AiAD121</em> on LG10 and explained 20.5% and 27.7% of the phenotypic variance, while the third (<em>qSH-7</em>, controlling SH) was located on LG7 and accounted for 15.8% of the phenotypic variance. Six suggestive QTL were detected on four different LGs. The linkage map and size-related QTL obtained in this study may facilitate marker-assisted selection (MAS) in bay scallop.</p> </div

    Number of markers and genetic length for sex-averaged linkage map of bay scallop.

    No full text
    <p>Number of markers and genetic length for sex-averaged linkage map of bay scallop.</p

    Summary of coverage and mCpGs in the three tissues.

    No full text
    <p>Summary of coverage and mCpGs in the three tissues.</p

    Methylation levels of the three types of exons.

    No full text
    <p>The methylation levels of three different types of exons (first, internal, and last) in the two tissues. (***Wilcoxon rank-sum test <i>P</i> < 0.0001)</p

    Consensus microsatellite-based linkage map for bay scallop (<i>Argopecten irradians</i>) constructed using two hybrid backcross-like families.

    No full text
    <p>The female linkage group (left) is named as β€œAiF_LG”; the male linkage group (middle) is named as β€œAiM_LG”; the sex-averaged linkage group (right) is named as β€œAi_LG”. The phenotypic maker (shell color) placed on LG 10 was underlined.</p

    The distribution of DNA methylation among included versus skipped exons in male gametes.

    No full text
    <p>The plots illustrate that exons included in transcription are more highly methylated than those skipped during transcription for the first, internal, and last exons. The methylation level (weighted methylation level) around exons was calculated by dividing the regions +/βˆ’ 200 bp within the start and end site of either included exons or skipped exons into 20 equal intervals for internal exons. For first and last exons, regions of +/βˆ’ 150 bp were divided into 15 equal intervals. Solid line: included exons; dotted line: skipped exons.</p

    Exon methylation status is associated with exon length.

    No full text
    <p>Boxplot showing the exon length for methylated and unmethylated exons in male gametes. The plot illustrate that the methylated exons are longer than the unmethylated exons for all three types of exons. (***Wilcoxon rank-sum test <i>P</i> < 0.0001).</p

    Experimental mating scheme employed to generate the two hybrid backcross-like mapping families (CC5 and CC10) and segregation of shell color in offspring.

    No full text
    <p>Experimental mating scheme employed to generate the two hybrid backcross-like mapping families (CC5 and CC10) and segregation of shell color in offspring.</p
    • …
    corecore