Publication with datasets Hoffmann & Shirriffs 2002, Geographic variation for wing shape in Drosophila serrata, Evolution

Cline, Geographic variation, Morphology and Shape


ABSTRACT: Geographic variation in wing shape in female Drosophila serrata was examined by characterizing isofemale strains from 19 localities collected along a transect on the eastern coast of Australia. Shape variation was analysed by Procrustes superimposition of landmark data followed by canonical variate analysis. The first extracted canonical variate showed a nonlinear association with latitude and accounted for 43% of the variance. There was a sharp increase in this variate at low latitudes as well as a gradual increase at high latitudes. These shape changes were associated with two landmarks at the edge of the wing. There was also a linear change in wing aspect. The isofemale heritability for two measures of shape was around 30%. Allometric relationships were weak both between localities and among isofemale strains within localities. The possibility that wing shape parameters are under selection independent of wing size is discussed.


  • 08 Hoffmann & Shirriffs 2002, Wing traits

    This data file contains x and y coordinates of nine landmarks for wings and different traits related to wing shape for 19 Drosophila serrata populations collected in 2001. Measurements were taken for up to 10 isofemale lines per population. Wing_aspect was defined as wing length (the linear distance between landmarks 3 and 6) divided by the square root of wing area (here taken to be centroid size). Angle (outer-wing aspect) was defined as the angle between the vectors from landmarks 2 and 8 and the vector between landmarks 4 and 8. Wing proportion (outer_wing aspect) was defined as the linear distance between landmarks 2 and 4 divided by wing length (Fig. 2). Note longitudes in data are approximate.

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