... Original articleBody size reaction norms in Drosophila melanogaster: temporal stability and genetic architecture in a natural populationDev Karan,Jean-Philippe Morin,Emmanuelle ... on natural populations have mainlydemonstrated spatial genetic variations such as latitudinal clines in variousspecies [2, 4, 14, 23, 25], and temporal variations are ... analysed two size- related traits,wing and thorax length. We also calculated the wing/thorax ratio, whichis related to wing loading and flight capacity and might be a...