5 resultados para Pedigree

em Deakin Research Online - Australia


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The critical and most obvious component of lobbying is the interaction an entity has with government. The executive, parliament and bureaucracy are the key players in the field. On the opposing side, to extend a sporting analogy, are the lobbyists – who are identified or labelled, singularly or plurally, by a variety of names: pressure groups, policy consultants, tariff consultants, public relations consultants, interest groups, special interest groups, industrial and professional associations, government relations managers, public affairs managers and Lloyd’s qualified term, the ‘political lobbyist’ .
All these nomenclatures require further explanation – some are used interchangeably, others are now an historical term only, some fall from the common language only to reappear at a later date. Of all, the oldest and most widely recognised is lobbyist and lobbying. Lloyd (1989) states that the term ‘lobby agent’ was first used in Westminster in the mid-17th century. In the United States Schriftgiesser (1951) writes that the famous American journalist H L Mencken, the Sage of Baltimore, traced the first use of the word lobby, as we currently understand it, to Washington DC in 1829. At that time the term lobby-agent was in use but it was shortened, by journalists, to lobbyist by 1832.
It has been suggested that the concept of lobbying – of seeking influence among the powerful – is as old as government e itself. Lloyd (1989) cites examples of lobbying from the Old and New testaments – the most famous pressure group being those who petitioned Pontius Pilate to crucify Jesus Christ!
In the US the activities of lobbying were recognised before the term was coined when, according to Schriftgeisser (1951), ‘a little gang of painted –up merchants (who) pushed British tea into the salt water of Boston harbor’ (p4).
So the pedigree of lobbying activities is long and colourful. As the western form of parliamentary democracy has evolved and expanded among nations it seems that lobbying has been ever present on this journey. It is by its activities, its parts, that we can define and recognise lobbying most clearly and view the changes.

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Objective:

The SH3-domain GRB2-like (endophilin)-interacting protein 1 (SGIP1) gene has been shown to be differentially expressed in the hypothalamus of lean versus obese Israeli sand rats (Psammomys obesus), and is suspected of having a role in regulating food intake. The purpose of this study was to assess the role of genetic variation in SGIP1 in human disease.
Subjects:

We performed single-nucleotide polymorphism (SNP) genotyping in a large family pedigree cohort from the island of Mauritius. The Mauritius Family Study (MFS) consists of 400 individuals from 24 Indo-Mauritian families recruited from the genetically homogeneous population of Mauritius. We measured markers of the metabolic syndrome, including diabetes and obesity-related phenotypes such as fasting plasma glucose, waist:hip ratio, body mass index and fat mass.
Results:

Statistical genetic analysis revealed associations between SGIP1 polymorphisms and fat mass (in kilograms) as measured by bioimpedance. SNP genotyping identified associations between several genetic variants and fat mass, with the strongest association for rs2146905 (P=4.7 × 10−5). A strong allelic effect was noted for several SNPs where fat mass was reduced by up to 9.4% for individuals homozygous for the minor allele.
Conclusions:

Our results show association between genetic variants in SGIP1 and fat mass. We provide evidence that variation in SGIP1 is a potentially important determinant of obesity-related traits in humans.

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Habitat fragmentation is a major threat to biodiversity, as it can alter ecological processes at various spatial and trophic scales. At the species level, fragmentation leading to the isolation of populations can trigger reductions in genetic diversity, potentially having detrimental effects on population fitness, adaptability and ultimately population persistence. Leptomyrmex pallens is a widespread rainforest ant endemic to New Caledonia but now confined to habitat patches that have been fragmented by anthropogenic fire regimes over the last 200 years. We investigated the social structure of L. pallens in the Aoupinié region (c.a. 4900 ha), and assessed the impacts of habitat fragmentation on its population genetic structure. Allele frequencies at 13 polymorphic microsatellite loci were compared among 411 worker ants from 21 nests distributed across the region. High within-nest relatedness (r = 0.70 ± 0.02), and a single queen found in 38 % of the nests by pedigree analysis indicate that the species is monogynous to weakly polygynous. Estimates of gene flow and genetic structure across the region were subsequently determined using a combined dataset of single workers per nest and of unrelated foraging workers. These estimates coupled with a comprehensive landscape genetic analysis revealed no evidence of significant population structure or habitat effects, suggesting that the Aoupinié region harbours a single panmictic population. In contrast, analyses of mitochondrial DNA sequence data revealed a high degree of genetic structuring, indicating limited maternal gene flow and suggesting that gene flow among nests is driven primarily by winged males. Overall these findings suggest that fire-induced habitat fragmentation has had little impact on the population dynamics of L. pallens. Additional studies of less mobile species should therefore be conducted to gain further insights into fire related disturbances on the unique biodiversity and function of New Caledonian ecosystems.