Ancorabolus chironi sp. nov., the first record of a member of the Ancorabolus-group (Copepoda: Harpacticoida: Ancorabolidae) from the Mediterranean

Marine Biodiversity - Tập 40 - Trang 79-93 - 2010
Markus Schulz1, Kai Horst George2
1Carl-von-Ossietzky-Universität Oldenburg, Oldenburg, Germany
2Senckenberg am Meer, Abt. DZMB, Wilhelmshaven, Germany

Tóm tắt

Multicorer sampling at Anaximenes Seamount (eastern Mediterranean) during RV METEOR cruise M 71/1 in December 2006 yielded several specimens of a new species of Ancorabolidae Sars, 1909. The new species belongs to the taxon Ancorabolus Norman, due to the following apomorphies: (1) process bearing cephalothoracic sensillar group I more produced and spinous; (2) cephalothoracic sensillar group II: sensilla b–c and posterior tube-pore arising from individual thorn-like processes; anterior tube-pore raised; (3) cephalothoracic sensillar group IV: constriction and allometric growth resulting in distad displacement of sensilla a and d; (4) P3 enp-2 inner seta absent; (5) P4 female enp-2 inner seta absent; (6) P4 enp-2 outer element sexually dimorphic (setiform in female, spiniform in male). It differs, however, from the remaining species in overall shape, ornamentation of natatory legs and presence of anterior processes on cephalic shield. This justifies the erection of a new species, Ancorabolus chironi sp. nov. The record constitutes the first finding for members of the Ancorabolus group in the Mediterranean. A diagnostic key to the Ancorabolus species is provided.

Tài liệu tham khảo

Arroyo L, George KH, Benito J, Maldonado M (2003) A new species of Ancorabolidae (Copepoda, Harpacticoida) from the northern coast of Spain: Laophontodes mourois sp. n. Hydrobiologia 498:169–176 Ax P (1984) Das phylogenetische system. Gustav Fischer, Stuttgart Charlou JL, Donval JP, Zitter T, Roy N, Jean-Baptiste P, Foucher JP, Woodside J, MEDINAUT Scientific Party (2003) Evidence of methane venting and geochemistry of brines on mud volcanoes of the eastern Mediterranean Sea. Deep-Sea Res 50:941–958 Christiansen B, Türkay M, Emeis KC (eds) (2010) Biology and biogeochemistry of the Eastern Mediterranean Sea. Cruise No. 71. Leitstelle METEOR, Institut für Meereskunde der Universität Hamburg (in press) Conroy-Dalton S (2001) Systematics and phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). II. Polyphyly of Polyascophorus and description of Arthuricornua, new genus. J Crustac Biol 21:170–191 Conroy-Dalton S (2003a) Systematics and phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). III. Description of two new species of Ceratonotus Sars and Dendropsyllus, new genus. J Crustac Biol 23:69–93 Conroy-Dalton S (2003b) Systematics and phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). IV. Redescription, ontogeny and position of Echinopsyllus normani. Cah Biol Mar 44:153–169 Conroy-Dalton S (2004) Systematics and phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). V. Description of Lobopleura, new genus, with notes on Probosciphontodes Fiers. J Crustac Biol 24:17–36 Conroy-Dalton S, Huys R (2000) Systemactics and phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). I. The Ancorabolus-lineage, with the description of three new genera. Cah Biol Mar 41:343–397 Coull BC (1973) Meiobenthic Harpacticoida (Crustacea, Copepoda) from the deep sea off North Carolina IV The families Cletodidae T. Scott and Ancorabolidae Sars. Trans Am Microsc Soc 92:604–620 Drzycimski I (1967) Zwei neue Harpacticoida (Copepoda) aus dem westnorwegischen Küstengebiet. Sarsia 30:75–82 Fiers F (1988) Probosciphontodes n. gen., a new genus of the family Ancorabolidae, with the description of two new species (Copepoda, Harpacticoida). Bull Inst Roy Sci Nat Belgique 58:75–83 Fisher C, Roberts H, Cordes E, Bernard B (2007) Cold seeps and associated communities of the Gulf of Mexico. Oceanography 20(4):118–129 George KH (1998a) Polyascophorus, a new genus of Ancorabolidae (Crustacea, Copepoda), including the description of two new species and the re-allocation of Ceratonotus gorbunovi. Vie Milieu 48:141–155 George KH (1998b) A new species of Ancorabolidae (Copepoda, Harpacticoida) from the Beagle channel (Chile). Hydrobiologia 379:23–32 George KH (2001) First record of the “genus” Ancorabolus Norman, 1903 from the Southern Hemisphere, including analyses of copepodid development (Crustacea, Copepoda, Harpacticoida, Ancorabolidae). Senckenbergiana Biologica 81:23–36 George KH (2006a) New Ancorabolinae Sars, 1909 (Copepoda: Harpacticoida: Ancorabolidae) of the Atlantic and the Pacific Ocean. The taxa Ceratonotus Sars, and Dendropsyllus Conroy-Dalton. Meiofauna Marina 15:87–122 George KH (2006b) New Ancorabolinae Sars, 1909 (Copepoda: Harpacticoida: Ancorabolidae) of the Atlantic Ocean. Description of Pseudechinopsyllus sindemarkae gen. et sp. nov. and Dorsiceratus ursulae sp. nov. from the Great Meteor Seamount, and redescription of D. octocornis Drzycimski, 1967, and D. triarticulatus Coull, 1973 (part.). Meiofauna Marina 15:123–156 George KH (2006c) Ancorabolinae Sars (Copepoda: Harpacticoida: Ancorabolidae) of the deep Atlantic Ocean. Ancorabolina chimera gen. et sp. nov. including remarks to ancorabolid phylogeny and to the evolution of the first natorial leg in comparison with Laophontoidea T Scott. Meiofauna Marina 15:157–176 George KH, Plum C (2009) Description of two new species of Dorsiceratus Drzycimski, 1967 (Copepoda: Harpacticoida: Ancorabolidae) from Sedlo and Seine Seamounts (Northeastern Atlantic) and remarks of the phylogenetic status of the genus. In: Brökeland W and George KH (eds). Deep-sea taxonomy—a contribution to our knowledge of biodiversity. Zootaxa 2096: 257–286 George KH, Schminke HK (1998) First records of the genus Ceratonotus G. O. Sars, 1909 (Copepoda, Ancorabolidae) from the Southern Hemisphere, with the description of two new species. Crustaceana 71:801–817 George KH, Tiltack A (2010) A new species of Ancorabolina (Copepoda, Harpacticoida, Ancorabolidae) from A Mediterranean submarine cave, with a key to species. Vie Milieu (in press) Gheerardyn H, George KH (2010) New representatives of the genus Ancorabolina George, 2006 (Copepoda, Harpacticoida, Ancorabolidae) including remarks on ancorabolid phylogeny. Zool J Linn Soc 158:16–55 Gómez S, Conroy-Dalton S (2002) Description of Ancorabolus hendrickxi sp. nov. (Copepoda: Harpacticoida: Ancorabolidae) from the neotropics and notes on caudal ramus development within oligoarthran harpacticoids. Cah Biol Mar 43:111–129 Hennig W (1982) Phylogenetische Systematik. Paul Parey, Berlin Hicks GRF, Coull BC (1983) The ecology of marine meiobenthic harpacticoid copepods. Oceanogr Mar Biol Annu Rev 21:67–175 Huys R, Boxshall GA (1991) Copepod evolution. Ray Society Publications 159, London Kornev PN, Chertoprud ES (2008) Harpacticoid copepods from the White Sea: morphology, systematics, ecology. KMK Scientific Press, Moscow Lang K (1944) Monographie der Harpacticiden (vorläufige Mitteilungen). Almquist & Wiksells boktrycheri, Uppsala Lang K (1948) Monographie der Harpacticiden. Otto Koeltz Science Publishers, Königstein, reprint 1975 Lösekann T, Knittel K, Nadalig T, Fuchs B, Niemann H, Boetius A, Amann R (2007) Diversity and abundance of aerobic and anaerobic methane oxidizers at the Haakon Mosby mud volcano, Barents Sea. Appl Environ Microbiol 10:3348–3362 Norman AM (1903) Notes on the natural history of East Finmark. Ann Mag Nat Hist 11(7):1–32 Norman AM (1911) Three species of harpacticoid Copepods. Trans Linn Soc London 11(2):137–143 Sars GO (1909) Copepoda Harpacticoida. Parts 27 & 28. Cletodidae (concluded), Anchorabolidae, Cylindropsyllidae, Tachidiidae (part.). An account of the crustacea of Norway with short descriptions and figures of all the species 5: 305–336 Schizas NV, Shirley TC (1994) Two new species of Laophontodes (Copepoda, Harpacticoida, Ancorabolidae) from McMurdo Sound, Antarctica. Zool Scr 23(3):205–216 Schminke HK (1976) The ubiquitous telson and the deceptive furca. Crustaceana 30:292–299 ten Veen JH, Woodside JM, Zitter TAC, Dumont JF, Mascle J, Volkonskaia A (2004) Neotectonic evolution of the Anaximander Mountains at the junction of the Hellenic and Cyprus arcs. Technophysics 391:35–65 Wandeness AP, George KH, Santos PJP (2009) First record of the taxon Echinopsyllus (Copepoda, Harpacticoida, Ancorabolidae) from the deep sea of Campos Basin, Brazil, with the description of three new species and their contribution to phylogenetic analysis. Zool J Linn Soc 156:52–78