Open Access Research article

Expression of collier in the premandibular segment of myriapods: support for the traditional Atelocerata concept or a case of convergence?

Ralf Janssen1*, Wim GM Damen2 and Graham E Budd1

Author Affiliations

1 Uppsala University, Department of Earth Sciences, Villavägen 16, 752 36 Uppsala, Sweden

2 Friedrich-Schiller-University Jena, Department of Genetics, Philosophenweg 12, 07743 Jena, Germany

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BMC Evolutionary Biology 2011, 11:50  doi:10.1186/1471-2148-11-50

Published: 24 February 2011

Additional files

Additional file 1:

Figure S1: Expression of Glomeris collier and Lithobius collier at the blastoderm stage (stage 0). A/a Bright field (A) and DAPI fluorescent (a) picture of the same Glomeris embryo showing expression at blastoderm stage. The asterisk in the DAPI stained embryo marks the cumulus. B/C Anterior expression in a closed ring in a blastoderm stage embryo of Glomeris (B) and Lithobius (C) respectively. D-F showing the same Glomeris embryo from different angles: ventral view (D), lateral view (E) and dorsal view (F). G-I showing the same Lithobius embryo from different angles: ventral view (G), lateral view (H) and dorsal view (I). Note that in both species dorsal expression is weaker, but in a broader domain. J-L Schematic drawing showing conserved ring-morphology of col expression in Glomeris and Lithobius at the blastoderm stage.

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Additional file 2:

Figure S2: Additional aspects of collier expression in Euperipatoides. A Early stage II embryo with beginning expression in the brain (black arrow). B Early stage III embryo. Arrowheads mark expression in the anterior of the developing limbs. C Late stage III embryo showing expression in a continuous anterior to posterior stripe ventral to jaw, slime papilla and walking limbs. Dot-like expression is also visible in the limbs.

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