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Phylogenetical Aspects

  • Anthony C. Neville
Chapter
  • 132 Downloads
Part of the Zoophysiology and Ecology book series (ZOOPHYSIOLOGY, volume 4/5)

Abstract

The lower arthropods all continue ecdysis even when sexually adult. Only the Pterygota cease moulting when adult, and this is correlated with the difficulty of continuing to ecdyse once the adult had evolved wings. The only Pterygotes which ecdyse in the adult stage are mayflies (Ephemeroptera). Associated with the abolition of ecdysis in other adult Pterygote insects is the loss of ecdysial lines of weakness: thus even though they can be forced by injection of ecdysone to undergo a supernumerary apolysis followed by the deposition of a second adult cuticle, they are unable to undergo a supernumerary ecdysis.

Keywords

Baltic Amber Parasitic Copepod Pore Canal Cuticle Structure Adult Cuticle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin · Heidelberg 1975

Authors and Affiliations

  • Anthony C. Neville
    • 1
  1. 1.Department of ZoologyUniversity of BristolBristolGreat Britain

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