World Database of Nematodes

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Nemys source details

De Oliveira Pinto, T.K.,Netto, S.A., Esteves, A.M., De Castro, F.J.V., Neres, P.F. and Da Silva, M.C. (2021). Free-living freshwater nematodes from Brazil: checklist of genera and regional patterns of diversity. Nematology. 0 (2021) 1-14.
404311
De Oliveira Pinto, T.K.,Netto, S.A., Esteves, A.M., De Castro, F.J.V., Neres, P.F. and Da Silva, M.C.
2021
Free-living freshwater nematodes from Brazil: checklist of genera and regional patterns of diversity
Nematology
0 (2021) 1-14
Publication
Available for editors  PDF available [request]
Brazil has one of the largest varieties of aquatic ecosystems and rich freshwater biodiversity, but these components have constantly been damaged by the expansion of unsustainable activities. Free-living nematodes are an abundant and ubiquitous component of continental benthic communities, occurring in all freshwater habitats, including extreme environments. Despite this, hardly any studies have examined the generic composition of nematodes in different latitudes and the geographic overlap of assemblages. We provide data on nematode genera from six regions in Brazil, over a north-south gradient spanning about 4000 km, encompassing rivers, coastal lakes, and reservoirs with different levels of human impact. Interpolation/extrapolation curves were generated and the zeta diversity was used to assess the overlap of nematode assemblages. Freshwater nematode assemblages comprised 54 families and 132 genera. Mononchidae, Monhysteridae, Chromadoridae, Tobrilidae and Dorylaimidae were the most diverse families. Differences in diversity and high turnover of genera were found among regions, probably related to stochastic processes. Mononchus was the only widely distributed genus. Our results revealed a high biodiversity of free-living freshwater nematodes among the regions. The limited spatial coverage of the data reveals an enormous knowledge gap in a country with 12% of the world’s freshwater resources. The lack of spatial patterns, e.g., latitudinal variation, suggests that freshwater nematode assemblages are primarily structured by the intrinsic properties of habitats. This reinforces the uniqueness of freshwater ecosystems and suggests that the nematode assemblages may be sensitive to environmental disturbances, since the limited distributions of taxa may lead to lower resilience.
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2021-04-13 13:48:02Z
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Acanthonchus Cobb, 1920 (additional source)
Achromadora Cobb, 1913 (additional source)
Acrostichus Rahm, 1928 (additional source)
Actinca Andrássy, 1964 (additional source)
Actinolaimus Cobb, 1913 (additional source)
Afractinolaimus Andrássy, 1970 (additional source)
Alaimus de Man, 1880 (additional source)
Amphidelus Thorne, 1939 (additional source)
Anaplectus De Coninck & Schuurmans Stekhoven, 1933 (additional source)
Anatonchus Cobb, 1916 (additional source)
Anonchus Cobb, 1913 (additional source)
Anoplostoma Bütschli, 1874 (additional source)
Antomicron Cobb, 1920 (additional source)
Aphanolaimus de Man, 1880 (additional source)
Aphanonchus Coomans & Raski, 1991 (additional source)
Aporcelaimellus Heyns, 1965 (additional source)
Aporcelaimus Thorne & Swanger, 1936 (additional source)
Brasilaimus Lordello & Zamith, 1957 (additional source)
Brevitobrilus Tsalolikhin, 1981 (additional source)
Caenorhabditis Osche, 1952 (additional source)
Cephaloboides (Rahm, 1928) Massey, 1974 (additional source)
Cervonema Wieser, 1954 (additional source)
Chitwoodius Furstenberg & Heyns, 1966 (additional source)
Chromadorella Filipjev, 1918 (additional source)
Chromadorina Filipjev, 1918 (additional source)
Chromadorita Filipjev, 1922 (additional source)
Chronogaster Cobb, 1913 (additional source)
Clarkus Jairajpuri, 1970 (additional source)
Cobbonchus Andrássy, 1958 (additional source)
Comesa Gerlach, 1956 accepted as Neotonchus Cobb, 1933 (additional source)
Comiconchus Jairajpuri & Khan, 1982 (additional source)
Coomansus Jairajpuri & Khan, 1977 (additional source)
Criconemoides Taylor, 1936 (additional source)
Crocodorylaimus Andrassy, 1988 (additional source)
Cylindrolaimus de Man, 1880 (additional source)
Daptonema Cobb, 1920 (additional source)
Desmodora de Man, 1889 (additional source)
Dichromadora Kreis, 1929 (additional source)
Diplolaimelloides Meyl, 1954 (additional source)
Dolichodorus Cobb, 1914 (additional source)
Dorylaimoides Thorne & Swanger, 1936 (additional source)
Dorylaimus Dujardin, 1845 (additional source)
Drepanodorylaimus Jairajpuri, 1966 (additional source)
Enoploides Ssaweljev, 1912 (additional source)
Epidorylaimus Andrássy, 1986 (additional source)
Epitobrilus Tsalolikhin, 1981 (additional source)
Eudorylaimus Andrássy, 1959 (additional source)
Eumonhystera Andrássy, 1981 (additional source)
Euteratocephalus Andrássy, 1958 (additional source)
Eutobrilus Tsalolikhin, 1981 (additional source)
Eutylenchus Cobb, 1913 (additional source)
Filenchus Andrássy, 1954 (additional source)
Gammarinema Kinne & Gerlach, 1953 (additional source)
Geomonhystera Andrássy, 1981 (additional source)
Hemicycliophora de Man, 1921 (additional source)
Hirschmanniella Luc & Goodey, 1963 (additional source)
Hypodontolaimus de Man, 1886 (additional source)
Iotonchus Andrássy, 1958 (additional source)
Ironus Bastian, 1865 (additional source)
Ischiodorylaimus Andrássy, 1969 (additional source)
Jensenonchus Jairajpuri & Khan, 1982 (additional source)
Judonchulus Andrássy, 1958 (additional source)
Kinonchulus Riemann, 1972 (additional source)
Labronema Thorne, 1939 (additional source)
Laimydorus Siddiqi, 1969 (additional source)
Lelenchus Andrássy, 1954 (additional source)
Leptolaimus de Man, 1876 (additional source)
Limonchulus Andrássy, 1963 (additional source)
Linhomoeus Bastian, 1865 (additional source)
Mesodorylaimus Andrássy, 1959 (additional source)
Mesotobrilus Tsalolikhin, 1981 (additional source)
Metoncholaimus Filipjev, 1918 (additional source)
Microdorylaimus Andrássy, 1986 (additional source)
Microlaimus de Man, 1880 (additional source)
Monhystera Bastian, 1865 (additional source)
Monhystrella Cobb, 1918 (additional source)
Mononchoides Rahm, 1928 (additional source)
Mononchulus Cobb, 1918 (additional source)
Mononchus Bastian, 1865 (additional source)
Mylonchulus Cobb, 1916 (additional source)
Neotobrilus Tsalolikhin, 1981 (additional source)
Nygolaimus Cobb, 1913 (additional source)
Oionchus Cobb, 1913 (additional source)
Oncholaimellus de Man, 1890 (additional source)
Oncholaimus Dujardin, 1845 (additional source)
Onchulus Cobb, 1920 (additional source)
Oscheius Andrássy, 1976 (additional source)
Oxydirus Thorne, 1939 (additional source)
Oxystomina Filipjev, 1918 (additional source)
Panagrolaimus Fuchs, 1930 (additional source)
Panduripharynx Timm, 1961 (additional source)
Paractinolaimus Meyl, 1957 (additional source)
Paracyatholaimus Micoletzky, 1922 (additional source)
Paradesmodora Schuurmans Stekhoven, 1950 (additional source)
Paramonohystera Steiner, 1916 (additional source)
Paramononchus Mulvey, 1978 (additional source)
Paraphanolaimus Micoletzky, 1923 (additional source)
Paraplectonema Strand, 1934 (additional source)
Parodontophora Timm, 1963 (additional source)
Paronchulus Altherr, 1972 (additional source)

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