Early Cambrian origin of modern food webs: evidence from predator arrow worms
| Autor: | Elodie Renvoisé, S.-X. Hu, Jean Vannier, J.-P. Casanova, Michael Steiner |
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| Přispěvatelé: | Paléoenvironnement et paléobiosphère ( PP ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Sekr. ACK 14, Technische Universität Berlin ( TUB ), Biogéosciences [Dijon] ( BGS ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), Yunnan Institute of Geological Science, Funding provided by the French Ministries of Foreign Affairs, Education and Research (DRIC) and the Chinese Ministry of Science and Technology (MOST) via the PRA T03–04 Program and by the Deutsche Forschungsgemeinschaft (DFG), PaleoEnvironnements et PaleobioSphere (PEPS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Technische Universität Berlin (TU), Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Range (biology)
010502 geochemistry & geophysics MESH: Fossils 01 natural sciences Food chain MESH : Ecosystem MESH: Animals MESH: Ecosystem MESH : Evolution General Environmental Science Trophic level [ SDU.STU.PG ] Sciences of the Universe [physics]/Earth Sciences/Paleontology Ecology Fossils plankton Biota General Medicine Biological Evolution MESH: China MESH : Food Chain Cambrian predation [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology General Agricultural and Biological Sciences Research Article 010506 paleontology China Biology Zooplankton General Biochemistry Genetics and Molecular Biology MESH: Invertebrates [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems MESH: Evolution Animals MESH : China Marine ecosystem 14. Life underwater MESH: Food Chain Ecosystem 0105 earth and related environmental sciences MESH : Invertebrates Ecological niche General Immunology and Microbiology Pelagic zone Invertebrates chaetognaths [ SDV.EE.ECO ] Life Sciences [q-bio]/Ecology environment/Ecosystems food chain MESH : Fossils fossil-lagerstätte MESH : Animals |
| Zdroj: | Proceedings of the Royal Society B: Biological Sciences Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2007, 274 (1610), pp.627-633. 〈10.1098/rspb.2006.3761〉 Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2007, 274 (1610), pp.627-633. ⟨10.1098/rspb.2006.3761⟩ |
| ISSN: | 0962-8452 1471-2954 |
| DOI: | 10.1098/rspb.2006.3761〉 |
| Popis: | 7 pages; International audience; Although palaeontological evidence from exceptional biota demonstrates the existence of diverse marine communities in the Early Cambrian (approx. 540-520 Myr ago), little is known concerning the functioning of the marine ecosystem, especially its trophic structure and the full range of ecological niches colonized by the fauna. The presence of a diverse zooplankton in Early Cambrian oceans is still an open issue. Here we provide compelling evidence that chaetognaths, an important element of modern zooplankton, were present in the Early Cambrian Chengjiang biota with morphologies almost identical to Recent forms. New information obtained from the lowermost Cambrian of China added to previous studies provide convincing evidence that protoconodont-bearing animals also belonged to chaetognaths. Chaetognaths were probably widespread and diverse in the earliest Cambrian. The obvious raptorial function of their circumoral apparatuses (grasping spines) places them among the earliest active predator metazoans. Morphology, body ratios and distribution suggest that the ancestral chaetognaths were planktonic with possible ecological preferences for hyperbenthic niches close to the sea bottom. Our results point to the early introduction of prey-predator relationships into the pelagic realm, and to the increase of trophic complexity (three-level structure) during the Precambrian-Cambrian transition, thus laying the foundations of present-day marine food chains. |
| Databáze: | OpenAIRE |
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