Chaetonotidae is a
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
of gastrotrichs in the order
Chaetonotida
The Chaetonotida is an order of gastrotrichs. They generally have a tenpin or bottle-like shape.
Chaetonotids inhabit both freshwater and marine environments. They can be distinguished from other gastrotrichs by the absence of pores in the phar ...
. It is the largest family of
gastrotrichs
The gastrotrichs (phylum Gastrotricha), commonly referred to as hairybellies or hairybacks, are a group of microscopic (0.06-3.0 mm), worm-like, acoelomate animals, and are widely distributed and abundant in freshwater and marine environme ...
with almost 400 species, some of which are marine and some freshwater. Current classification is largely based on shape and external structures but these are highly variable.
Molecular studies show a high level of support for a
clade containing
Dasydytidae nested within Chaetonotidae.
Genera
The following genera are included in the family Chaetonotidae according to the World Register of Marine Species:
*Subfamily
Chaetonotinae Kisielewski, 1991
:*Genus ''
Arenotus''
Kisielewski, 1987
::*''Arenotus strixinoi''
Kisielewski, 1987
:*Genus ''
Aspidiophorus
''Aspidiophorus'' is a genus of gastrotrichs belonging to the family Chaetonotidae
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marine ...
''
Voigt, 1903
:*Genus ''
Caudichthydium''
Schwank, 1990
:*Genus ''
Chaetonotus
''Chaetonotus'' is a genus of gastrotrichs in the family Chaetonotidae
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marine and some fre ...
''
Ehrenberg, 1830
:*Genus ''
Fluxiderma
''Fluxiderma'' is a genus of gastrotrichs belonging to the family Chaetonotidae
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marine and ...
''
d'Hondt, 1974
:*Genus ''
Halichaetonotus
''Halichaetonotus'' is a genus of gastrotrichs belonging to the family Chaetonotidae.
The species of this genus are found in Europe and Central America.
Species
Species:
*''Halichaetonotus aculifer''
*''Halichaetonotus arenarius''
*''Halic ...
''
Remane, 1936
:*Genus ''
Heterolepidoderma
''Heterolepidoderma'' is a genus of gastrotrichs belonging to the family Chaetonotidae.
The species of this genus are found in Europe and Southern America.
Species:
* ''Heterolepidoderma acidophilum'' Kanneby, Todaro & Jondelius, 2012
* ''Heter ...
''
Remane, 1926
:*Genus ''
Ichthydium
''Ichthydium'' is a genus of gastrotrichs belonging to the family Chaetonotidae
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marine and ...
''
Ehrenberg, 1830
:*Genus ''
Lepidochaetus''
Kisielewski, 1991
:*Genus ''
Lepidoderma''
:*Genus ''
Lepidodermella
''Lepidodermella'' is a genus of gastrotrichs belonging to the family Chaetonotidae
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marine ...
''
Blake, 1933
:*Genus ''
Polymerurus
''Polymerurus'' is a genus of gastrotrichs belonging to the family Chaetonotidae.
The genus has almost cosmopolitan distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most ...
''
Remane, 1927
:*Genus ''
Rhomballichthys
''Rhomballichthys'' is a genus of gastrotrichs belonging to the family Chaetonotidae
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marin ...
''
Schwank, 1990
:*Genus ''
Chitonodytes''
:*Genus ''
Hemichaetonotus''
:*Genus ''
Pseudichthydium''
*Subfamily
Undulinae''
Kisielewski, 1991
:*Genus ''
Undula''
Kisielewski, 1991
References
External links
Gastrotricha
Platyzoa families
Taxa named by Philip Henry Gosse
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