(Phys.org) —Two British research teams have begun using micro-CT scanners to watch butterfly pupae develop into butterflies while still alive inside their chrysalis shells. The first team did so as a means of studying the initial stages of insect metamorphosis, focusing specifically on trachea development. Their work, done as part of a BBC documentary has not yet been published. The second team has taken things much further. In their paper published in Journal of the Royal Society Interface, they describe how they created several time-lapse videos of pupae as they changed into painted lady butterflies.
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