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Evolutionary Ecology of Marine Invertebrate Larvae$
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Tyler Carrier, Adam Reitzel, and Andreas Heyland

Print publication date: 2017

Print ISBN-13: 9780198786962

Published to Oxford Scholarship Online: January 2018

DOI: 10.1093/oso/9780198786962.001.0001

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Evolutionary Transitions in Mode of Development

Evolutionary Transitions in Mode of Development

Chapter:
(p.50) Chapter 4 Evolutionary Transitions in Mode of Development
Source:
Evolutionary Ecology of Marine Invertebrate Larvae
Author(s):
Rachel Collin, Amy Moran
Publisher:
Oxford University Press
DOI:10.1093/oso/9780198786962.003.0004

In the large body of literature on ecological and evolutionary mechanisms underlying transitions between planktotrophy and lecithotrophy, the focus has typically covered long evolutionary timescales; that is, evolution of complex larval traits is generally discussed in the context of phylogenetic patterns detectable at the level of families, classes, or phyla. An analytical approach incorporating comparative phylogenetics is increasingly used to address these long-view questions. Here, we discuss what has been learned from taking a comparative phylogenetic approach and the limitations of this approach. We propose that approaches based on a closer view—that is, analyses that focus on genetic, morphological, and functional variation among individuals, populations, or closely related congeners—have greater potential to answer questions about mechanisms underlying the loss and regain of major complex characters such as feeding larvae.

Keywords:   Dollo’s Law, phylogenetic effects, metamorphosis, indirect development, ancestral state reconstruction, evo-devo

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