Terminal Addition, Segmentation, and the Evolution of Metazoan Body Plan Regionalization

Terminal Growth, Segmentation and the Evolution of Metazoan Body Plan Regionalization

Nigel Hughes (University of California, Riverside) and David Jacobs (University of California, Los Angeles); Contact: nigel.hughes@ucr.edu

Financial support for this symposium is provided by the NASA Solar System Exploration Division, SICB, and the Palaeontological Association.

Friday 7th January 2005

8.00-8.30am: Rich Mooi (California Academy of Sciences), Bruno, D, and Wray, G. – Arrays in rays: terminal addition in echinoderms by the “Ocular Plate Rule”

8.30-9.00am: Olivier Pourqui� (Stowers Institute) – Segmental Patterning of the Vertebrate Axis

9.00-9.30am: Thom Kaufman (University of Indiana) – The Role of Gap and Pair Rule Genes in the Segmentation of the Germband of Oncopeltus

9.30-10.00am: Graham Budd (Uppsala University) – The evolution of terminal patterning in arthropods

10.00-10.30am: Wim Damen (K�ln University) – Terminal addition in arthropods: The molecular basis of segmentation in spiders and millipedes

10.30-11.00am: COFFEE.

11.00-11.30am: KEYNOTE. Alessandro Minelli (University of Padova) – A morphologist’s perspective on terminal growth and segmentation

11.30-12.00am: KEYNOTE. Nipam Patel (University of California, Berkeley) – The Evolution of Segmentation – Mechanisms of Terminal Addition

LUNCH

1.00-1.30pm: Giuseppe Fusco (University of Padova) – Segment number and segmentation performances in arthropods

1.30-2.00pm: Wallace Arthur (National University of Ireland, Galway) – Genetic, developmental and environmental aspects of variation in centipede segment numbers

2.00-2.30pm: Nigel Hughes (University of California, Riverside) – Historical experiments in terminal addition, segmentation and tagmosis

2.30-3.00pm: Dieter Waloszek (University of Ulm) – Evolutionary History of Crustacean Segmentation and Tagmosis: A Fossil-Based Perspective

Saturday 8th January 2005

9.00-9.30am: David Weisblat (UC Berkeley), A.S. Rivera, F.C. Gonsalves, M.H. Song and S.O. Zhang – Segmentation in Helobdella robusta, a glossiphoniid leech

9.30-10.00am: Guillaume Balavoine (CNRS Gif-sur-Yvette) R. De Rosa, B. Prud’Homme, A. Adoutte, – Posterior addition: the annelid way

10.00-10.30am: COFFEE

10.30-11.00am: Vicky Prince (University of Chicago) – Vertebrate axial patterning and the consequences of duplication events

11.00-11.30am: Jason Head (Smithsonian) – Ecological and phylogenetic variation in segmentation in snakes

11.30-12.00pm: David Jacobs (University of California, Los Angeles), Nigel Hughes, (UCR) and Chris Winchell (UCLA) – Terminal Addition and the Evolution of Bilaterian Form

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