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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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Aegialoalaimidae Lorenzen, 1981 (additional source)
Atrochromadora Wieser, 1959 (additional source)
Bathyepsilonema Steiner, 1927 (additional source)
Camacolaimus de Man, 1889 accepted as Deontolaimus de Man, 1880 (additional source)
Chromadora Bastian, 1865 (additional source)
Chromadorita Filipjev, 1922 (additional source)
Comesoma Bastian, 1865 (additional source)
Daptonema Cobb, 1920 (additional source)
Deontostoma Filipjev, 1916 (additional source)
Desmodora de Man, 1889 (additional source)
Desmoscolex Claparède, 1863 (additional source)
Desmoscolex amaurus Lorenzen, 1972 (additional source)
Desmoscolex articulatus Timm, 1978 (additional source)
Desmoscolex frigidus Timm, 1978 (additional source)
Desmoscolex gerlachi Timm, 1970 (additional source)
Desmoscolex labiosus Lorenzen, 1969 (additional source)
Desmoscolex max Timm, 1970 (additional source)
Dichromadora Kreis, 1929 (additional source)
Diplopeltis Cobb, 1905 (additional source)
Eleutherolaimus Filipjev, 1922 (additional source)
Elzalia Gerlach, 1957 (additional source)
Enoploides Saveljev, 1912 (additional source)
Enoplus Dujardin, 1845 (additional source)
Epacanthion Wieser, 1953 (additional source)
Epsilonema Steiner, 1927 (additional source)
Euchromadora de Man, 1886 (additional source)
Eurystomina Filipjev, 1921 (additional source)
Filipjeva Ditlevsen, 1928 (additional source)
Glochinema Lorenzen, 1974 (additional source)
Greeffiella Cobb, 1922 (additional source)
Greeffiella antarctica Timm, 1978 (additional source)
Halalaimus de Man, 1888 (additional source)
Halichoanolaimus de Man, 1886 (additional source)
Halomonhystera Andrássy, 2006 (additional source)
Ledovitia Filipjev, 1927 (additional source)
Leptolaimus de Man, 1876 (additional source)
Leptosomatides Filipjev, 1918 (additional source)
Leptosomatina Allgén, 1951 (additional source)
Leptosomatum Bastian, 1865 (additional source)
Metalinhomoeus de Man, 1907 (additional source)
Micoletzkyia Ditlevsen, 1926 (additional source)
Microlaimus de Man, 1880 (additional source)
Molgolaimus Ditlevsen, 1921 (additional source)
Monhystera Bastian, 1865 (additional source)
Odontophora Bütschli, 1874 (additional source)
Oncholaimus Dujardin, 1845 (additional source)
Oxystomina Filipjev, 1918 (additional source)
Paracanthonchus Micoletzky, 1924 (additional source)
Paralinhomoeus de Man, 1907 accepted as Linhomoeus Bastian, 1865 (additional source)
Paramesacanthion Wieser, 1953 (additional source)
Paranticoma Micoletzky & Kreis, 1930 (additional source)
Pelagonema Cobb, 1894 (additional source)
Phanoderma Bastian, 1865 (additional source)
Platycomopsis Ditlevsen, 1926 (additional source)
Prochromadorella Micoletzky, 1924 (additional source)
Pselionema Cobb, 1933 (additional source)
Pseudocella Filipjev, 1927 (additional source)
Quadricoma Filipjev, 1922 accepted as Tricoma (Quadricoma) (Filipjev, 1922) (additional source)
Quadricoma curvicauda Timm, 1978 (additional source)
Quadricoma pontica Filipjev, 1922 (additional source)
Rhabdodemania Baylis & Daubney, 1926 (additional source)
Rhips Cobb, 1920 (additional source)
Sabatieria Rouville, 1903 (additional source)
Siphonolaimus de Man, 1893 (additional source)
Sphaerolaimus Bastian, 1865 (additional source)
Spiliphera Bastian, 1865 (additional source)
Spirinia Gerlach, 1963 (additional source)
Synonchus Cobb, 1894 (additional source)
Terschellingia de Man, 1888 (additional source)
Thalassomonhystera Jacobs, 1987 (additional source)
Theristus Bastian, 1865 (additional source)
Thoracostoma Marion, 1870 (additional source)
Tricoma Cobb, 1894 (additional source)
Tricoma (Quadricoma) avicapitata (Timm, 1978) (additional source)
Tricoma maxima (Schepotieff, 1907) (additional source)
Tricoma nematoides (Greeff, 1869) (additional source)
Tricoma septentrionalis Timm, 1978 (additional source)
Usarpnema Timm, 1978 (additional source)
Usarpnema auriculatum Timm, 1978 (additional source)
Viscosia de Man, 1890 (additional source)

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