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Mechanisms of Life History EvolutionThe Genetics and Physiology of Life History Traits and Trade-Offs$
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Thomas Flatt and Andreas Heyland

Print publication date: 2011

Print ISBN-13: 9780199568765

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199568765.001.0001

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Mechanisms underlying feeding-structure plasticity in echinoderm larvae

Mechanisms underlying feeding-structure plasticity in echinoderm larvae

(p.221) Chapter 17 Mechanisms underlying feeding-structure plasticity in echinoderm larvae
Mechanisms of Life History Evolution

Benjamin G. Miner

Oxford University Press

Feeding larvae from several classes of echinoderms alters the size of their feeding structures in response to food concentrations. When food is scarce, larvae produce longer arms and smaller stomachs. There is strong evidence that this response is adaptive and has important fitness consequences. Research on the mechanisms of this response suggests that larvae perceive exogenous cues from algae, alter the production of skeleton forming cells, and might alter transcription factors such as orthopedia that appear to play a role in skeleton formation. This chapter reviews the literature related to skeleton and stomach development to better understand mechanisms of feeding structure plasticity in echinoderms larvae. It provides guidance for future research.

Keywords:   plutei, auricularia, bipinnaria, ciliary band, echinopluteus, evolution, gene regulatory network, ophiopluteus, phenotypic plasticity, skeleton

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