Dugesia japonica

Dugesia japonica is a species of dugesiid triclad that inhabits the freshwater bodies of East Asia. Because it is under the genus Dugesia, it is also sometimes considered a type of planarian.[2]

Dugesia japonica
Two headed D. japonica that regenerated from a trunk fragment exposed to Praziquantel.[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Platyhelminthes
Order:
Tricladida
Suborder:
Continenticola
Family:
Dugesiidae
Genus:
Dugesia
Species:
D. japonica
Binomial name
Dugesia japonica
Ichikawa & Kawakatsu, 1964

Phylogeny

D. japonica position in relation with other Dugesia species after the work of Lázaro et al., 2009:[3]

 Dugesia 
 
 

 D. sicula

 
 

 D. aethiopica

 
 
 
 
 
 

 D. japonica

 
 
 

 D. ryukyuensis

 
 
 

 D. notogaea

 
 

 D. bengalensis

 
 
 
 
 
 
 

 D. subtentaculata

 
 
 

 D. gonocephala

 
 
 

 D. liguriensis

 
 
 

 D. etrusca

 
 

 D. ilvana

 
 
 
 
 
 

 D. benazzii

 
 

 D. hepta

 
 
 
 
 

Space Experimentation

A study was published in 2017 in which a Dugesia Japonica trunk fragment had been sent into space, and grew with two heads, one on either end of the trunk.[4] However, the influence of space conditions on this phenomenon is debated.[5]

References
  1. Nogi T, Zhang D, Chan JD, Marchant JS (June 2009). Keiser J (ed.). "A novel biological activity of praziquantel requiring voltage-operated Ca2+ channel beta subunits: subversion of flatworm regenerative polarity". PLoS Neglected Tropical Diseases. 3 (6): e464. doi:10.1371/journal.pntd.0000464. PMC 2694594. PMID 19554083.
  2. Pan HC, Fan J, Wang FF, Sun Z (March 2008). "Effect of medium Ph on population growth, asexual reproduction and activity of six enzymes of Dugesia japonica. Acta Hydrobiologica Sinica". Acta Hydr Sin Acta Hydrobiologica Sinica. 3.
  3. Lázaro EM, Sluys R, Pala M, Stocchino GA, Baguñà J, Riutort M (September 2009). "Molecular barcoding and phylogeography of sexual and asexual freshwater planarians of the genus Dugesia in the Western Mediterranean (Platyhelminthes, Tricladida, Dugesiidae)". Molecular Phylogenetics and Evolution. 52 (3): 835–45. doi:10.1016/j.ympev.2009.04.022. PMID 19435604.
  4. Morokuma J, Durant F, Williams KB, Finkelstein JM, Blackiston DJ, Clements T, et al. (April 2017). "Planarian regeneration in space: Persistent anatomical, behavioral, and bacteriological changes induced by space travel". Regeneration. 4 (2): 85–102. doi:10.1002/reg2.79. PMC 5469732. PMID 28616247.
  5. Sluys R, Stocchino GA (August 2017). "Bipolarity in planarians is not induced by space travel". Regeneration. 4 (4): 153–155. doi:10.1002/reg2.90. PMC 5743782. PMID 29299320.
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