(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.


Figure 1


Fig. 1. Digital images of B. alvarengai taken under various circumstances. (A) A cryptically coloured individual in the field, (B) a non-cryptic individual in the field, (C) a darkly coloured cool (18°C) frog at the beginning of Series III experiments, and (D) the same frog as in C 1 h later after reaching 28°C. Note the dramatic colour differences between individuals in the field under varying circumstances (A,B) and within the same individual (C,D) at different body temperatures.