Ecological regulation of development: Induction of marine invertebrate metamorphosis

Jackson, Daniel J., Leys, Sally P., Hinman, Veronica F., Woods, Rick F. G., Lavin, Martin F. and Degnan, Bernard M. (2002) Ecological regulation of development: Induction of marine invertebrate metamorphosis. International Journal of Developmental Biology, 46 4: 679-686.

Author Jackson, Daniel J.
Leys, Sally P.
Hinman, Veronica F.
Woods, Rick F. G.
Lavin, Martin F.
Degnan, Bernard M.
Title Ecological regulation of development: Induction of marine invertebrate metamorphosis
Journal name International Journal of Developmental Biology   Check publisher's open access policy
ISSN 1696-3547
Publication date 2002-01-01
Sub-type Article (original research)
Open Access Status Not Open Access
Volume 46
Issue 4
Start page 679
End page 686
Total pages 8
Place of publication Bilbao, Spain
Publisher UBC Press
Language eng
Subject C1
270504 Invertebrate Biology
770303 Control of pests and exotic species
270201 Gene Expression
Abstract In the marine environment a wide range of invertebrates have a pelagobenthic lifecycle that includes planktonic larval and benthic adult phases. Transition between these morphologically and ecologically distinct phases typically occurs when the developmentally competent larva comes into contact with a species-specific environmental cue. This cue acts as a morphogenetic signal that induces the completion of the postlarval/juvenile/adult developmental program at metamorphosis. The development of competence often occurs hours to days after the larva is morphologically mature. In the non-feeding - lecithotrophic - larvae of the ascidian Herdmania curvata and the gastropod mollusc Haliotis asinina, gene expression patterns in pre-competent and competent stages are markedly different, reflecting the different developmental states of these larval stages. For example, the expression of Hemps, an EGF-like signalling peptide required for the induction of Herdmania metamorphosis, increases in competent larvae. Induction of settlement and metamorphosis results in further changes in developmental gene expression, which apparently is necessary for the complete transformation of the larval body plan into the adult form.
Keyword Developmental Biology
Ascidian Halocynthia-roretzi
Larval Tissues
Retinoic Acid
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 03:11:55 EST