Diversity of brood chambers in calloporid bryozoans (Gymnolaemata, Cheilostomata): comparative anatomy and evolutionary trends.

Autor(en)

Andrei Ostrovsky, Norbert Vávra, Claus Nielsen, Ekaterina B. Yagunova

Abstrakt

Comparative anatomical studies of 12 species from 10 genera (Callopora, Tegella, Amphiblestrum, Parelisina, Corbulella, Crassimarginatella, Valdemunitella, Bryocalyx, Concertina, Cauloramphus) belonging to one of the largest and most diverse bryozoan taxa, the Calloporidae, and one species from the genus Akatopora belonging to the related taxon Antroporidae, were undertaken to elucidata the morphological diversity of brooding structures and to recognzize main trands in their evolution. Most of the species studied posses ovicells (specialized brooding receptacles) formed by the distal and maternal (egg-producing) autozooids. The distal zooid can be an autozooid, a vicarious avicularium or a kenozooid. The calcified protective hood (ooecium) is an outgrowth from the distal zooid.

Organisation(en)

Institut für Paläontologie

Externe Organisation(en)

Technical University of Denmark (DTU), Saint Petersburg State University

Journal

Zoomorphology: an international journal of comparative and functional morphology

Band

128

Seiten

13-35

Anzahl der Seiten

23

ISSN

0720-213X

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

105118 Paläontologie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1c327b92-1bbd-44be-92bf-5a40737741ad