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Morphogenesis of the Acanthocephala
Authors:G D Schmidt
Affiliation:1. ENTPE, INRA, CNRS UMR 5023 LEHNA, rue Maurice Audin, 69518 Vaulx-en-Velin Cedex, France;2. Irstea - Groupement de Lyon, Unité de recherche Milieux Aquatiques, Ecologie et Pollutions (MAEP), 5 rue de la Doua, 69626 Villeurbanne Cedex, France;3. Université de Lyon, Institut des Sciences Analytiques, UMR5280 CNRS, Université Lyon 1, ENS-Lyon, 5 rue de la Doua, 69100 Villeurbanne, France;4. SUEZ International – Treatment Infrastructure, Wastewater Technical Division, Degrémont, 183 avenue du 18 juin 1940, 92508 Rueil-Malmaison, France;1. Department Pharmacy, Center for Pharma Research, Butenandtstr. 5, House B, 81377 Munich, Germany;2. Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, Germany;1. Environmental Research and Innovation (ERIN) Department, Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg;2. Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), CNRS UMR 7360, Université de Lorraine, Metz, France;3. Materials Research and Technology (MRT) Department, Luxembourg Institute of Science and Technology, (LIST), 5 avenue des Hauts-Fourneaux, Esch-sur-Alzette, Luxembourg;4. Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway
Abstract:Postzygotic development of acanthocephalans is described. The major conclusion that can be drawn is that there has been a great deal of speculation, and that there are still many questions left unanswered. For example, exactly when does the acanthor become a complete syncytium? Is the formulation of the central nuclear mass really homologous to gastrulation, and does this mass really represent endoderm? What is endoderm in an animal with no trace of a digestive system? What is the significance, if any, of the 90 degree change in polarity from the acanthor to the adult? How do a few giant nuclei determine the fate and function of a massive synctial body? These and other questions continue to intrigue and perplex the investigator. Perhaps by the time of ICOPA-VII we will have some of the answers.
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