Graphical abstract: How the crustacean carapace evolved (IMAGE)

Marine Biological Laboratory

Graphical abstract: How the crustacean carapace evolved

Caption

The ancestral arthropod had multiple plates on each leg on every body segment, similar to the living crustacean Parhyale. Later arthropods repress most of these, but any plate can be derepressed on any body segment to form what appears to be novel structures. The Daphnia carapace evolved by de-repressing and elaborating the blue head plate and the insect wing evolved by de-repressing and elaborating the pink thoracic plate.

Credit

Bruce and Patel, Current Biology, 2022.

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