Pavel Pecháček & David Stella, Charles University, Prague, Czech Republic
Friday 21 November 11:00
Sir Neil Chalmers seminar room, Darwin Centre LG16 (below Attenborough studio)
The males of the Brimstone butterfly (Gonepteryx rhamni) have ultraviolet patterns on the dorsal surfaces of their wings. Using geometric morphometrics, we have analysed correlations between environmental variables (climate, productivity) and shape variability of the ultraviolet pattern and the forewing in specimens of Palaearctic butterflies. Using principal component analysis (PCA) precipitation, temperature, latitude correlated with shape variation of the ultraviolet patterns across the Palaearctic region. We observed a systematic increase in the relative area of ultraviolet colouration with increasing temperature and precipitation and decreasing latitude. We conclude that the variation in shape of ultraviolet patterns on the forewings of male Brimstone butterflies is correlated with large-scale environmental factors.
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