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Cover -- Half Title -- Series Page -- Title Page -- Copyright Page -- Table of Contents -- Series Preface (Evolutionary Cell Biology) -- Preface -- Editor -- Contributors -- Section I: The Diversity of Segmentation -- Chapter 1: Segmentation: A Zoological Concept of Seriality -- 1.1 Segments and Segmentation -- 1.2 Segments and Series -- 1.3 Ontogeny of Seriality and Segmentation -- 1.4 Theories on the Evolution of Seriality and Segmentation -- 1.5 How Often Did Segments Evolve? -- 1.6 Problems with Structural Definitions of a Segment -- 1.7 Problems with Ontogenetic Definitions of a Segment

1.8 Structural and Ontogenetic Segment Definitions Lead to Paradoxes -- 1.9 Segments Do Not Form Spatial and Differential Units -- 1.10 Simple Anomalies Disturb the Pattern of Segmentation -- 1.11 Criticism of the Term "Segment" -- Acknowledgments -- References -- Chapter 2: Diversity in Segmentation Mechanisms -- 2.1 Introduction -- 2.2 The Sequence of Segment Formation -- 2.2.1 Embryonic or Post-Embryonic Segmentation -- 2.2.2 Simultaneous or Sequential Segmentation -- 2.3 Cyclical Processes in Segmentation -- 2.4 Proliferation versus Cell Rearrangement As Drivers of Segment Formation

2.5 Types of Cells in Segmentation Processes -- 2.6 Commonalities in Segmentation Processes: Are There Any? -- References -- Section II: Cellular Mechanisms of Segmentation -- Chapter 3: Cell Division, Movement, and Synchronization in Arthropod Segmentation -- 3.1 Introduction -- 3.1.1 Segmentation and Elongation: The Evolving Roles of Cell Division and Cell Rearrangement -- 3.2 The Role of Cell Division -- 3.2.1 Case Studies Support a New Model for the Role of Cell Division in the Posterior -- 3.2.1.1 Thamnocephalus -- 3.2.1.2 Oncopeltus -- 3.2.1.3 Tribolium

3.2.2 What Have These Case Studies Revealed? -- 3.2.2.1 The Growth Zone Typically Requires Mitosis But Only at Low Rates -- 3.2.2.2 The Anterior Growth Zone Functions As a Transition Zone in Segmental Specification -- 3.2.2.3 Cell Division Is Highly Regulated and Regionalized in Both the Growth Zone and Trunk -- 3.3 The Role of Cell Rearrangement -- 3.3.1 Cell Rearrangements from Diverse Taxa Have Some Common Features -- 3.3.2 Convergent Extension Drives Elongation in Drosophila -- 3.3.2.1 Elongation in Drosophila Occurs Primarily by Junctional Remodeling

3.3.2.2 Intra- and Intercellular Effectors of Cell Movements Are Polarized in Drosophila -- 3.3.2.3 Pair-Rule Genes Drive Periodic Expression of the Toll Receptors Required for Convergent Extension -- 3.3.3 Cell Rearrangements in Sequentially Segmenting Arthropods: The Tribolium Model -- 3.3.3.1 Live Imaging Shows Clear Convergent Extension in the Tribolium Germband -- 3.3.3.2 Tribolium Convergent Extension Does Not Appear to Arise from a Drosophila-Like Neighbor-Sliding Mechanism -- 3.3.3.3 How Do Posterior Cells in Tribolium Converge and Extend?

3.3.3.4 Role of Pair-Rule Genes in Elongation in Tribolium

The evolution of segmentation is one of the central questions in evolutionary developmental biology. Indeed, it is one of the best case studies for the role of changes in development in the evolution of body plans. Segmented body plans are believed to have appeared several times in animal evolution, and to have contributed significantly to the evolutionary success of the taxa in which they are present. Because of the centrality of the subject, and the continuing interest in understanding segmentation, this book offers an often overlooked focus on the cellular aspects of the process of segmentation, providing an invaluable reference for students of evolutionary developmental biology at all levels. Key Features Explores the role that segmentation has played in the diversity of animals Documents the diverse cellular mechanisms by which segmentation develops Reviews the independent evolutionary origins of segmentation Provides insight into the general patterns of serial homology at the cellular level Related Titles Lynne Bianchi. Developmental Neurobiology (ISBN 978-0-8153-4482-7). Jonathan Bard. Principles of Evolution: Systems, Species, and the History of Life (ISBN 978-0-8153-4539-8). Gerhard Scholtz. Evolutionary Developmental Biology of Crustacea (ISBN 978-9-0580-9637-1). Dr. Ariel D. Chipman is Associate Professor in the Department of Ecology, Evolution & Behavior of the Silberman Institute of Life Sciences at The Hebrew University of Jerusalem. He is the author or co-author of dozens of peer reviewed scientific journal articles. His research focuses upon the evolution of animal body plans with a focus on arthropod segmentation, integrating comparative embryology, the fossil record and genome evolution.

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