Overview

Distribution

Tasmania, Australia (doubtful) and America. Introduced species of Girardia are present in Europe and East Asia.

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Physical Description

Diagnostic Description

High triangular shaped head, sometimes truncated. Absence of seminal vesicle or presence of the bifid nonmuscular type. Absence of diaphragm. The musculature of the inner circular muscules of the bursal canal is surrounded by longitudinal or intermingled fibres. Numerous testes that can be ventral, dorsal or occupying all the space between the dorsal and the ventral surface. The pharynx is usually pigmented.

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Ecology

General Ecology

Ecology

Freshwater.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:50Public Records:2
Specimens with Sequences:5Public Species:2
Specimens with Barcodes:2Public BINs:0
Species:5         
Species With Barcodes:2         
          
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Barcode data

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Girardia

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Wikipedia

Girardia

Girardia is a genus of freshwater triclad belonging to the Dugesiidae family.

Until 1991 Girardia was considered a subgenus of Dugesia, then it was upgraded to the genus rank.[1] Many works are still using incorrectly the old genus for some Girardia species, mainly for Girardia dorotocephala and Girardia tigrina.[2][3][4][5]

Species[6]

Phylogeny

Girardia sp. specimen preserved in alcohol.

Phylogenetic tree including five dugesiid genera after Álvarez-Presas et al., 2008:[7]

Dugesiidae

Girardia




Neppia




Cura




Schmidtea



Dugesia






References

  1. ^ De Vries, E. J.; Sluys, R. (1991). "Phylogenetic relationships of the genus Dugesia (Platyhelminthes, Tricladida, Paludicola)". Journal of Zoology 223 (1): 103–116. doi:10.1111/j.1469-7998.1991.tb04752.x.  edit
  2. ^ Sheiman, I. M.; Kreshchenko, N. D.; Sedel'Nikov, Z. V.; Groznyi, A. V. (2004). "Morphogenesis in Planarians Dugesia tigrina". Russian Journal of Developmental Biology 35 (4): 228. doi:10.1023/B:RUDO.0000036713.86633.c2.  edit
  3. ^ Lombardo, P.; Giustini, M.; Miccoli, F. P.; Cicolani, B. (2011). "Fine-scale differences in diel activity among nocturnal freshwater planarias (Platyhelminthes: Tricladida)". Journal of Circadian Rhythms 9: 2. doi:10.1186/1740-3391-9-2. PMC 3094315. PMID 21477354.  edit
  4. ^ Hassall, C.; Hollinshead, J.; Hull, A. (2012). "Temporal dynamics of aquatic communities and implications for pond conservation". Biodiversity and Conservation 21 (3): 829. doi:10.1007/s10531-011-0223-9.  edit
  5. ^ Prados, J.; Alvarez, B.; Howarth, J.; Stewart, K.; Gibson, C. L.; Hutchinson, C. V.; Young, A. M. J.; Davidson, C. (2012). "Cue competition effects in the planarian". Animal Cognition. doi:10.1007/s10071-012-0561-3.  edit
  6. ^ *Tyler S, Schilling S, Hooge M, and Bush LF (comp.) (2006-2012) Turbellarian taxonomic database. Version 1.7 Database
  7. ^ Álvarez-Presas, M.; Baguñà, J.; Riutort, M. (2008). "Molecular phylogeny of land and freshwater planarians (Tricladida, Platyhelminthes): From freshwater to land and back". Molecular Phylogenetics and Evolution 47 (2): 555–568. doi:10.1016/j.ympev.2008.01.032. PMID 18359250.  edit
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