Revised 02/12/24
Chromadorina
Chromadoroidea
Selachinematidae Cobb, 1915
Two subfamilies: Choniolaiminae Schuurmans-Stekhoven & Adam, 1931 and Selachinematinae Cobb, 1915
A family of marine nematodes.
Marine nematodes, considered voracius predators.of, among others, smaller nematodes.
Usually a stout cylindrical body , anteriorly truncate.
Complex buccal armament of rhabdions, denticles, or heavy mandibles, for capture of nematode prey.
Multispiral amphids.
Percentages of selachinematids and other predator taxa in nematode assemblages are usually low in mud and silty sediments., more abundant in sandy sediments with higher species diversity and prey density.
12 genera as of 2016.
Halichoanolaimus the most common, diverse and widely distributed; Cheironchus less common but widely distributed.
Ref: Leduc and Zhao, 2016; Tchesunov te al., 2020.
Bongers, T. De Nematoden van Nederland.
Goodey, T and J.B. Goodey, 1963. Soil and Freshwater Nematodes. Methuen. London
Leduc, D., Zhao, Z.Q. 2016. Molecular characterisation of five nematode species (Chromadorida, Selachinematidae) from shelf and upper slope sediments off New Zealand, with description of three new species. Zootaxa 4132:59-76.
Neira, C., Decraemer, W. 2009. Desmotersia levinae, a new genus and new species of free-living nematode from bathyal oxygen minimum zone sediments off Callao, Peru, with discussion on the classification of the genus Richtersia (Chromadorida: Selachinematidae. Organisms, Diversity and Evo;ution 9, 1:e1-1.e15
Tchesunov, A., Jeong, R. Lee W. 2020. Two New Marine Free-Living Nematodes from Jeju Island Together with a Review of the Genus Gammanema Cobb 1920 (Nematoda, Chromadorida, Selachinematidae). Diversity 2020, 12, 19; doi:10.3390/d12010019.
Return to Selachinematidae Menu