Origin and Evolution of Metazoan Cell Types

Andreas Hejnol is Professor and research group leader of “ComparativeDevelopmental Biology” at the Department of Biological Sciences (BIO) in Bergen,Norway. After earning his Ph.D. in Comparative Zoology from the Free UniversityBerlin, Germany in 2002, he worked as a postdoctoral fellow in the laboratory ofRalf Schnabel in Braunschweig and at the Kewalo Marine Laboratory in the labof Mark Q. Martindale in Hawaii. He led a research group at the Sars Centre from2009-2019. His research aims to understand the evolutionary origin and diversificationof animal body plans, cell types, and organ systems. He is an ERC ConsolidatorGrant holder and received for his achievements in Evolutionary DevelopmentalBiology and Comparative Zoology the prestigious Alexander O. Kovalevsky Medalfrom the St. Petersburg Society for Naturalists in 2018.Sally P. Leys is Professor in the Department of Biological Sciences at the Universityof Alberta, in Edmonton, Canada. She earned her Ph.D. from the University ofVictoria under George Mackie in 1996, for which she received the Canadian Societyof Zoologists Cameron Award 1997. She held a Commander C Bellairs PostdoctoralFellowship from McGill University for postdoctoral research in Barbados (1997)and then won an NSERC PDF which she took to the University Aix Marseille,France (1998) and later to the University of Queensland, Australia (1998-2000). Shewon an NSERC Women’s University Research Award in 2000 and was AssistantProfessor (Limited Term) at the University of Victoria, British Columbia. In 2002,she was awarded a Canada Research Chair Tier II at the University of Alberta in“Evolutionary and Developmental Biology.” Her research interests broadly concernunderstanding the origin of multicellularity in metazoans and more specifically thecellular and molecular basis of coordination in non-bilaterian animals, sponges,ctenophores, placozoans, and cnidarians.

• ContentsSeries Preface .........................................................................................................viiPreface........................................................................................................................ixAcknowledgements...................................................................................................xiiEditor Biographies....................................................................................................xvList of Contributors.................................................................................................xviiChapter 1 What Is a Cell Type?.............................................................................1Alessandro MinelliChapter 2 The Protistan Origins of Animal Cell Differentiation........................ 13Sebastián R. Najle and Iñaki Ruiz-TrilloChapter 3 Convergent Evolution of Animal-Like Organelles across theTree of Eukaryotes..............................................................................27Greg S. Gavelis, Gillian H. Gile and Brian S. LeanderChapter 4 Evolution of the Animal Germline: Insights from AnimalLineages with Remarkable Regenerating Capabilities........................ 47Ana Riesgo and Jordi SolanaChapter 5 Origin and Evolution of Epithelial Cell Types.................................... 75Emmanuelle Renard, André Le Bivic, and Carole BorchielliniChapter 6 Evolution of the Sensory/Neural Cell Types..................................... 101Sally P. Leys, Jasmine L. Mah, Emma K.J. EspositoChapter 7 Cell Types, Morphology, and Evolution of Animal ExcretoryOrgans............................................................................................... 129Carmen Andrikou, Ludwik Gąsiorowski, and Andreas HejnolIndex....................................................................................................................... 165

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