Biology:Kenkiidae
Kenkiidae is a family of freshwater triclads. Their species can be found sporadically in caves, groundwater, and deep lakes in Central Asia, Far East and North America.[1][2]
Description
Species in the family Kenkiidae are characterized by a thickened marginal epidermis, i.e., the epidermis of the body margins have larger cells provided with bigger rhabdites than the epidermis of the rest of the body.[3] Kenkiidae species have the testicles situated anterior to the pharynx, feature also common in the Dugesiidae and Planariidae. They have an anterior adhesive organ, which is also found in the family Dendrocoelidae. The inner muscles of the pharynx are divided in two layers. Kenkiidae species are not pigmented and they are usually blind.[1]
Taxonomy
American zoologist Libbie Hyman erected the family Kenkiidae in a 1937 issue of the Transactions of the American Microscopical Society, with Kenkia, named in honour of the Slovenian zoologist Roman Kenk, as the type genus.[2] It was not widely accepted as a valid taxon by other authors, and in 1974 Ian Raymond Ball (ca) proposed that the family Kenkiidae be redesignated as the subfamily Kenkiinae within Dendrocoelidae.[1][4] Roman Kenk would reinstate Kenkiidae as a family in 1975.[4]
Phylogeny
In a 2006 morphological phylogenetic analysis, Ronald Sluys (de) and Masaharu Kawakatsu found Kenkiidae to be a monophyletic sister group to the family Dendrocoelidae. Both families have an apomorphic anterior adhesive organ.[3][5]
Phylogenetic supertree after Sluys et al., 2009:[5]
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Genera
The family Kenkiidae includes the following genera:[6]
- Kenkia Hyman, 1937
- Sphalloplana de Beauchamp, 1931
- Vermipharyngiella Porfiriev & Timoshkin, 2013
References
- ↑ 1.0 1.1 1.2 Ball, I. R.: A contribution to the phylogeny and biogeography of the freshwater triclads (Platyhelminthes: Turbellaria). Biology of the Turbellaria (Edited by: Riser NW and Morse MP). New York: McGraw-Hill New York 1974, 339-401.
- ↑ 2.0 2.1 Cite error: Invalid
<ref>tag; no text was provided for refs namedHyman1937 - ↑ 3.0 3.1 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.
- ↑ 4.0 4.1 Kenk, Roman (1975). "Fresh-Water Triclads (Turbellaria) of North America. VII. The Genus Macrocotyla". Transactions of the American Microscopical Society 94 (3): 324. doi:10.2307/3225497. ISSN 0003-0023. OCLC 1480424.
- ↑ 5.0 5.1 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.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedWoRMS
External links
Data related to Kenkiidae at Wikispecies
Wikidata ☰ Q3195150 entry
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