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Dendrocoelidae

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Dendrocoelidae is a family of freshwater tricladida flatworms that has a holarctic distribution.[1]

The largest freshwater triclad known belongs to this family, it's up to 40 cm in length and inhabits the Lake Baikal.[2]

Description

The family Dendrocoelidae is characterized by an unusual arrangement of the muscle layers of the pharynx. While in most planarians the inner musculature of the pharynx is composed of two muscle layers, one circular and one longitudinal, in Dendrocoelidae the circular and longitudinal fibers are intermingled, forming a mixed layer.[1]

Dendrocoelidae is the sister group of Kenkiidae. Both families have an anterior adhesive organ, which is considered a synapomorphy of the group.[1]

Genera

Dendrocoelidae genera known are the following:[3]

Phylogeny

Phylogenetic supertree after Sluys et al., 2009:[3]

Tricladida

Maricola

     

Cavernicola

Continenticola Planarioidea

Planariidae

     

Kenkiidae

   

Dendrocoelidae

      Geoplanoidea

Dugesiidae

   

Geoplanidae

         

References

  1. ^ a b c Sluys, R.; Kawakatsu, M. (2006). "Towards a phylogenetic classification of dendrocoelid freshwater planarians (Platyhelminthes): A morphological and eclectic approach". Journal of Zoological Systematics and Evolutionary Research. 44 (4): 274. doi:10.1111/j.1439-0469.2006.00371.x.
  2. ^ Kozhov, M. 1963. Lake Baikal and Its Life. The Hague: W. Junk. vii + 344pp.
  3. ^ a b Sluys, R.; Kawakatsu, M.; Riutort, M.; Baguñà, J. (2009). "A new higher classification of planarian flatworms (Platyhelminthes, Tricladida)". Journal of Natural History. 43 (29–30): 1763–1777. doi:10.1080/00222930902741669.
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Dendrocoelidae: Brief Summary

provided by wikipedia EN

Dendrocoelidae is a family of freshwater tricladida flatworms that has a holarctic distribution.

The largest freshwater triclad known belongs to this family, it's up to 40 cm in length and inhabits the Lake Baikal.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN