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  • 1
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    Global genetic change tracks global climate warming in Drosophila subobscura (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-09-02
    Description: Comparisons of recent with historical samples of chromosome inversion frequencies provide opportunities to determine whether genetic change is tracking climate change in natural populations. We determined the magnitude and direction of shifts over time (24 years between samples on average) in chromosome inversion frequencies and in ambient temperature for populations of the fly Drosophila subobscura on three continents. In 22 of 26 populations, climates warmed over the intervals, and genotypes characteristic of low latitudes (warm climates) increased in frequency in 21 of those 22 populations. Thus, genetic change in this fly is tracking climate warming and is doing so globally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balanya, Joan -- Oller, Josep M -- Huey, Raymond B -- Gilchrist, George W -- Serra, Luis -- New York, N.Y. -- Science. 2006 Sep 22;313(5794):1773-5. Epub 2006 Aug 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Faculty of Biology, University of Barcelona, Diagonal 645, Barcelona 08071, Spain. jbalanya@ub.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16946033" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosome Inversion ; *Climate ; Drosophila/*genetics ; Europe ; Female ; Genome, Insect ; Geography ; Greenhouse Effect ; Male ; South America ; Temperature ; Time Factors ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of allozymic and quantitative variation produced by artificial selection in Drosophila melanogaster (1984)
    Springer
    Genetica 63 (1984), S. 39-47 
    Details
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In order to study a possible connection between allozymic and quantitative variation in D. melanogaster, three selection experiments were carried out, using founder strains of known genetic and chromosomal composition. The Adh and αGpdh-1 enzyme loci have been used as genetic markers and the maximum wing length has been the quantitative trait chosen. Two selected lines (‘high’ and ‘low’) were maintained and also one without selection (‘drift’), to estimate the effect of random fluctuation on gene frequency variation. The allozymic variation was analysed by means of a polynomial regression, and a normal linear model allowed to make pairwise comparisons. The allelic combination (α(F), A(-)) was favoured in the ‘low lines’ of the selection experiments; the selection acted in favour of homozygotes, with a correlated loss of genetic homoeostasis. The similar behaviour of the ‘drift’ and the control lines shows that random fluctuations in the gene frequencies in selected lines are negligible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00137463
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  • 3
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    Analysis of allozymic and quantitative variation produced by artificial selection in Drosophila melanogaster (1984)
    Springer
    Details
    Publication Date: 1984-04-01
    Print ISSN: 0016-6707
    Electronic ISSN: 1573-6857
    Topics: Biology
    Published by Springer
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