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Carcinization in the Anomura – fact or fiction? II. Evidence from larval, megalopal and early juvenile morphology by Patsy A. McLaughlin; Rafael Lemaitre; Christopher C. Tudge is a Environmental Science article available to read on EtoBox.

What is Carcinization in the Anomura – fact or fiction? II. Evidence from larval, megalopal and early juvenile morphology about?

In this second of a two-part series, carcinization in the Anomura has been reviewed from early juvenile, megalopal, and larval perspectives. Data from megalopal and early juvenile development in ten genera of the Lithodidae have provided unequivocal evidence that earlier hypotheses regarding evolution of the king crab pleon were erroneous. A pattern of sundering, and decalcification has been traced from the megalopal stage through several early crabs stages in species of __Lithodes__ and __Paralomis__, with supplemental evidence from species in eight other genera. Of major significance has been the attention directed to the Marginal plates of the second pleomere, which when separeted in lithodids are not homologous with the adult so-called “marginal plates” of the following three tergites. Auxiliary megalopal and early juvenile lithodid data, as well as equivalent data from other paguroids, support the evolutionary direction indicated by lithodid pleonal plate development. Therefore, while carcinization, or development of a crab-like body form, has occurred in the Lithodidae, it has not proceeded from a hermit crab ancestor. Rather the data suggest the reverse, thus effectively ref

Who reads Carcinization in the Anomura – fact or fiction? II. Evidence from larval, megalopal and early juvenile morphology?

Author

Patsy A. McLaughlin; Rafael Lemaitre; Christopher C. Tudge

Publisher

Brill; Brill Academic Publishers; Amsterdam: Digitaal Productiecentrum van de Universiteit van Amsterdam; Leiden: Brill (ISSN 1383-4517)

Published

2004

Language

EN

Field

Environmental Science (Physical Sciences)