Jump to ContentJump to Main Navigation
Animal EvolutionInterrelationships of the Living Phyla$
Users without a subscription are not able to see the full content.

Claus Nielsen

Print publication date: 2011

Print ISBN-13: 9780199606023

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199606023.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 20 October 2021

Prelude: Phylum Choanoflagellata

Prelude: Phylum Choanoflagellata

(p.13) 3 Prelude: Phylum Choanoflagellata
Animal Evolution

Claus Nielsen

Oxford University Press

Comprised of only about 200 species, the Choanoflagellata is a small phylum that occurs in most aquatic habitats. Choanoflagellates are unicellular, solitary, or colony-forming ‘flagellates’ without chloroplasts, and are either pelagic or sessile. They reproduce by binary fission, and sexual reproduction is implied by the presence of conserved meiotic genes. In addition, choanoflagellates have a complicated life cycle. Their sister-group relationship with metazoans is supported by morphological and molecular evidence.

Keywords:   choanoflagellates, Choanoflagellata, binary fission, sexual reproduction, meiotic genes, life cycle, metazoans

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .