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Miljutin, D. M.; Gad, G.; Miljutina, M. M.; Mokievsky, V. O.; Fonseca-Genevois, V.; Esteves, A. M. (2010). The state of knowledge on deep-sea nematode taxonomy: how many valid species are known down there?. Marine Biodiversity. 40(3): 143-159.
180275
10.1007/s12526-010-0041-4 [view]
Miljutin, D. M.; Gad, G.; Miljutina, M. M.; Mokievsky, V. O.; Fonseca-Genevois, V.; Esteves, A. M.
2010
The state of knowledge on deep-sea nematode taxonomy: how many valid species are known down there?
Marine Biodiversity
40(3): 143-159
Publication
Available for editors  PDF available
All available information from literature sources dealing with deep-sea nematode species was analyzed, in order to obtain an overview of the state of knowledge in deep-sea nematode taxonomy and answer the question of how many valid nematode species are known from the deep sea so far. One hundred and twenty-seven taxonomic and ecological literature sources reported a total of 638 valid species belonging to 175 genera and 44 families, from 474 deep-sea stations at depths of 400–8,380 m. This number is less than 16% of all known marine nematode species, whereas the deep sea comprises about 91% of the ocean bottom. Of these species, 71% were initially described from the deep sea. Most of the valid species have been reported from the North Atlantic, including the Mediterranean. The rest of the World Ocean, including the Pacific, Indian, Arctic and Antarctic oceans, is considerably less studied. The largest numbers of valid species were reported from the continental slope and the abyssal plains, while information on valid species from trenches, deep-sea canyons, and seamounts is extremely scanty. Some deep-sea families are much more investigated than others in proportion to their relative species abundances in the deep sea, i.e., the percentage of valid species from these families among all valid deep-sea species is much higher than the real percentage of species from these families reported in faunistic studies (e.g., Desmoscolecidae, Comesomatidae, Sphaerolaimidae, Benthimermithidae, Leptosomatidae, and Draconematidae). On the other hand, the families Xyalidae, Oxystominidae, and Monhysteridae were recognized as the most “underinvestigated,” as, in spite of their high species abundance in the deep sea, there are quite a few taxonomic studies on these taxa. Some deep-sea nematode species were reported from two or three oceans, and can be considered probable cosmopolitan species. Some number of probable eurybathic species were also found (the difference between minimum and maximum depth was from 1 km to more than 5 km).
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Acantholaimus Allgén, 1933 (additional source)
Actinonema Cobb, 1920 (additional source)
Aegialoalaimidae Lorenzen, 1981 (additional source)
Aegialoalaimus elegans de Man, 1907 (additional source)
Amphimonhystera Allgén, 1929 (additional source)
Aponema Jensen, 1978 (additional source)
Atrochromadora Wieser, 1959 (additional source)
Bolbolaimus Cobb, 1920 (additional source)
Camacolaimus de Man, 1889 accepted as Deontolaimus de Man, 1880 (additional source)
Ceramonema Cobb, 1920 (additional source)
Chromadora Bastian, 1865 (additional source)
Chromadorita Filipjev, 1922 (additional source)
Chromaspirina Filipjev, 1918 (additional source)
Coninckia Gerlach, 1956 (additional source)
Crenopharynx Filipjev, 1934 (additional source)
Cyartonema Cobb, 1920 (additional source)
Cylicolaimus de Man, 1889 (additional source)
Daptonema Cobb, 1920 (additional source)
Dasynemoides Chitwood, 1936 (additional source)
Desmodora de Man, 1889 (additional source)
Desmoscolex Claparède, 1863 (additional source)
Dichromadora Kreis, 1929 (additional source)
Diplopeltoides Gerlach, 1962 (additional source)
Diplopeltula Gerlach, 1950 (additional source)
Eleutherolaimus Filipjev, 1922 (additional source)
Enoploides Saveljev, 1912 (additional source)
Enoplus Dujardin, 1845 (additional source)
Epsilonema Steiner, 1927 (additional source)
Euchromadora de Man, 1886 (additional source)
Eurystomina Filipjev, 1921 (additional source)
Gammanema Cobb, 1920 (additional source)
Halalaimus de Man, 1888 (additional source)
Halichoanolaimus de Man, 1886 (additional source)
Halomonhystera Andrássy, 2006 (additional source)
Hypodontolaimus de Man, 1886 (additional source)
Ixonema Lorenzen, 1971 (additional source)
Leptolaimus de Man, 1876 (additional source)
Metalinhomoeus de Man, 1907 (additional source)
Microlaimus de Man, 1880 (additional source)
Molgolaimus Ditlevsen, 1921 (additional source)
Monhystera Bastian, 1865 (additional source)
Mononcholaimus Kreis, 1924 (additional source)
Odontophora Bütschli, 1874 (additional source)
Oncholaimus Dujardin, 1845 (additional source)
Oxystomina Filipjev, 1918 (additional source)
Paracanthonchus Micoletzky, 1924 (additional source)
Paracyatholaimus Micoletzky, 1922 (additional source)
Paralinhomoeus de Man, 1907 accepted as Linhomoeus Bastian, 1865 (additional source)
Pararaeolaimus Timm, 1961 (additional source)
Pareurystomina Micoletzky & Kreis, 1930 (additional source)
Pomponema Cobb, 1917 (additional source)
Prochromadorella Micoletzky, 1924 (additional source)
Pselionema Cobb, 1933 (additional source)
Pseudocella Filipjev, 1927 (additional source)
Pterygonema Gerlach, 1953 (additional source)
Rhabdocoma Cobb, 1920 (additional source)
Rhabdodemania Baylis & Daubney, 1926 (additional source)
Rhips Cobb, 1920 (additional source)
Richtersia Steiner, 1916 (additional source)
Sabatieria Rouville, 1903 (additional source)
Siphonolaimus de Man, 1893 (additional source)
Sphaerolaimus Bastian, 1865 (additional source)
Spirinia Gerlach, 1963 (additional source)
Symplocostoma Bastian, 1865 (additional source)
Synonchiella Cobb, 1933 (additional source)
Synonchus Cobb, 1894 (additional source)
Syringolaimus de Man, 1888 (additional source)
Tarvaia Allgén, 1934 (additional source)
Terschellingia de Man, 1888 (additional source)
Thalassironus De Man, 1889 (additional source)
Thalassoalaimus de Man, 1893 (additional source)
Thalassomonhystera Jacobs, 1987 (additional source)
Theristus Bastian, 1865 (additional source)
Trefusia de Man, 1893 (additional source)
Tricoma Cobb, 1894 (additional source)
Viscosia de Man, 1890 (additional source)
Wieseria Gerlach, 1956 (additional source)
Xyala Cobb, 1920 (additional source)