Virtual dissection and lifestyle of a 165-million-year-old female polychelidan lobster
| Type | Article | ||||||||||||
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| Date | 2016-03 | ||||||||||||
| Language | English | ||||||||||||
| Author(s) | Jauvion Clement 1, 2, Audo Denis3, Charbonnier Sylvain4, Vannier Jean1 |
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| Affiliation(s) | 1 : Univ Lyon 1, UMR CNRS 5726, Lab Geol Lyon Terre Planetes Environm, Batiment GEODE,2,Rue Raphael Dubois, F-69622 Villeurbanne, France. 2 : Ecole Normale Super Lyon, 46 Allee Italie, F-69364 Lyon 07, France. 3 : Univ Rennes 1, EA 7316, 263 Ave Gen Leclerc CS 74205, F-35042 Rennes, France. 4 : Univ Paris 06, Sorbonne Univ, CNRS, MNHN,CR2P,UMR 7207, 57 Rue Cuvier, F-75005 Paris, France. |
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| Source | Arthropod Structure & Development (1467-8039) (Elsevier Sci Ltd), 2016-03 , Vol. 45 , N. 2 , P. 122-132 | ||||||||||||
| DOI | 10.1016/j.asd.2015.10.004 | ||||||||||||
| WOS© Times Cited | 21 | ||||||||||||
| Keyword(s) | Crustacea, X-Ray tomography, Jurassic, La Voulte-sur-Rhone, Digestive system, Reproductive system | ||||||||||||
| Abstract | Polychelidan lobsters are fascinating crustaceans that were known as fossils before being discovered in the deep-sea. They differ from other crustaceans by having four to five pairs of claws. Although recent palaeontological studies have clarified the systematics and phylogeny of the group, the biology of extant polychelidans and - first of all - their anatomy are poorly documented. Numerous aspects of the evolutionary history of the group remain obscure, in particular, how and when polychelidans colonized the deep-sea and became restricted to it. Surprisingly, the biology of extant polychelidans and the anatomy of all species, fossil and recent, are poorly documented. Here, X-ray microtomography (XTM), applied to an exceptionally well-preserved specimen from the La Voulte Lagerstatte, reveals for the first time vital aspects of the external and internal morphology of Voulteryon parvulus (Eryonidae), a 165 million-year-old polychelidan: 1) its mouthparts (maxillae and maxillipeds), 2) its digestive tract and 3) its reproductive organs. Comparisons with dissected specimens clearly identify this specimen as a female with mature ovaries. This set of new information offers new insights into the feeding and reproductive habits of Mesozoic polychelidans. Contrasting with other Jurassic polychelidans that lived in shallow water environments, V. parvulus spawned in, and probably inhabited, relatively deep-water environments, as do the survivors of the group. (C) 2015 Elsevier Ltd. All rights reserved. | ||||||||||||
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