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First published online September 9, 2004

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New skins for old

Walk along most beaches and you will find discarded crab shells. But not only adult crabs moult – crab embryos also complete three moult cycles, the last of which is analogous to egg hatching in insects. On p. 4751, Chung and Webster describe in detail the developmental expression of the neurohormones that control embryonic moulting in green shore crabs. In adult crustaceans, ecdysis is controlled by at least three neuropeptides: moult-inhibiting hormone (MIH), crustacean hyperglycaemic hormone (CHH) and crustacean cardioactive peptide. The researchers combine quantitative RT-PCR and developmental peptide analyses to reveal the microanatomy of neurosecretory neurones that express MIH and CHH during embryogenesis, and compare this with the expression of two neuropeptides with neuromodulatory, as well as neurohormonal, roles. This research lays the groundwork for the use of gene-silencing technologies to study invertebrate neuroendocrinology in a simple model system.

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Related articles in Development:

Expression and release patterns of neuropeptides during embryonic development and hatching of the green shore crab, Carcinus maenas

J. Sook Chung and Simon G. Webster
Development 2004 131: 4751-4761. [Abstract] [Full Text]  

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Related articles in Development Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content Social Bookmarking                         What's this?