New gastropods from deep-sea hydrocarbon seeps off West Africa |
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| Institution: | 1. Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden;2. Muséum National d’Histoire Naturelle, CP 51, 57 rue Cuvier, F-75231 Paris Cedex 05, France;1. Institut Océanographique, 195 rue Saint-Jacques, 75005 Paris, France;2. Ifremer, Département DEEP/LEP,Centre de Brest, BP70, 29280 Plouzané, France;1. HKBU Institute of Research and Continuing Education, Shenzhen, China;2. Department of Biology, Hong Kong Baptist University, 224 Waterloo Road, Hong Kong, China;3. CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China;4. MLR Key Laboratory of Marine Mineral Resources, Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou 510070, China;1. Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;2. Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;3. Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;4. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;1. Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain;2. AMRI, The Australian Museum, 1 William Street, Sydney 2010, Australia;3. Grupo de Evolución, Sistemática y Ecología Molecular, Universidad del Magdalena, Santa Marta, Colombia;4. Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan;1. Division of EcoScience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, South Korea;2. Ministry of Education Key Laboratory of Mariculture, Ocean University of China, Qingdao 266003, Shandong, China;3. Department of Biological Sciences, Sungkyunkwan University, 2066 Seobu-ro, Suwon, Gyeonggi-do 16419, South Korea;4. Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan;5. Seto Marine Biological Laboratory, Kyoto University, 459 Shirahama, Nishimuro, Wakayama 649-2211, Japan;1. Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA;2. Department of Biological Sciences, Florida International University, Miami, FL 33199, USA;3. Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK;4. Biology Department, University of Wisconsin-Stevens Point, 800 Reserve Street, Stevens Point, Wisconsin 54481, USA;5. Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK;6. Queensland Museum, PO Box 3300, South Brisbane, Queensland 4101, Australia;7. Zoology Department, Universidade Federal de Minas Gerais, Brazil;8. Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, PO Box 37012, MRC 163, Washington, DC 20013, USA;9. Department of Biology, The Citadel, 171 Moultrie Street, Charleston, SC 29409, USA;10. Integrative Research Center, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, IL 60605, USA |
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| Abstract: | Thirteen new species of gastropods are described from the Zairov 1-2 and Biozaire 1-3 cruises to the methane seeps off the Congo River: Patellogastropoda: Paralepetopsis sasakii sp. nov. (Neolepetopsidae); Cocculiniformia: Pyropelta oluae sp. nov. and P. sibuetae sp. nov. (Pyropeltidae); Tentaoculus granulatus sp. nov. (Pseudococculinidae); Neomphalina: Leptogyra costellata sp. nov. (Family uncertain); Vetigastropoda: Puncturella similis sp. nov. (Fissurellidae); Lepetodrilus shannonae sp. nov. (Lepetodrilidae); Caenogastropoda: Provanna reticulata sp. nov. and P. chevalieri sp. nov., Cordesia provannoides gen. et sp. nov. (Provannidae); Phymorhynchus coseli sp. nov. and P. cingulata sp. nov. (Conidae); Heterobranchia: Hyalogyrina rissoella sp. nov. (Hyalogyrinidae). All species except T. granulatus (from a settlement trap) belong to groups known from cold seeps and the entire seep fauna here is new to science. Biogeographical affinity of this gastropod fauna is to the West Atlantic seeps, not to the Mediterranean seeps or Mid-Atlantic vents. Fragments of the autecology of the species are presented. The evolution of the seep gastropod fauna is briefly discussed and a continuous immigration of taxa is supported. The oldest verified occurrences of modern taxa in the seeps date back to Cenomanian (Cretaceous) time, while some taxa seem not to appear until very late Tertiary. |
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