Die Embryonalentwicklung der Paradiesschnecke ... - TOBIAS-lib

Kapitel 1:Turning snails into slugs: induced
body plan changes and formation of an
internal shell 1
Raphaela Osterauer a , Leonie Marschner a , Oliver Betz b , Matthias Gerberding c ,
Banthita Sawasdee a , Peter Cloetens d , Nadine Haus e , Bernd Sures e , Rita
Triebskorn a,f , Heinz-R. Köhler a
a Animal Physiological Ecology Department, Institute of Evolution and Ecology, University of
Tübingen, Konrad-Adenauer-Str. 20, D-72072 Tübingen, Germany
b Department of Evolutionary Biology of Invertebrates, Institute of Evolution and Ecology, University
of Tübingen, Auf der Morgenstelle 28E, 72076 Tübingen, Germany
c Institute of Zoology, University of Hohenheim, Garbenstr. 30, 70599 Stuttgart, Germany
d European Synchrotron Radiation Facility, B.P. 220, RF-38043 Grenoble, France
e Department of Applied Zoology/Hydrobiology, Institute of Biology, University of Duisburg-Essen,
Universitätsstr. 5, 45141 Essen, Germany
f Transfer Center for Ecotoxicology and Ecophysiology, Blumenstrasse 13, 72108 Rottenburg, Germany
Abstract
The archetypal body plan of conchiferan molluscs is characterized by an
external calcareous shell, though internalization of shells has evolved independently
in a number of molluscan clades, including gastropod families. In
gastropods, the developmental process of torsion is regarded as a hallmark
that is associated with a new anatomical configuration. This configuration
1 Evolution and Development, 2010, 12: 474–483, c○Wiley-Blackwell
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