Glass Physa

Physa skinneri (Physa jennessi skinner)

General Status Rank: 
Undetermined
Common Name: 
Glass Physa
Scientific Name: 
Physa skinneri (Physa jennessi skinner)
Synonyms: 
Physa jennessi skinner
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Taxonomy
Group: 
Mollusc (Freshwater Gastropod)
Kingdom: 
Animalia
Phylum: 
Mollusca
Class: 
Gastropoda
Order: 
Basommatophora
Family: 
Physidae
Distribution

Ecozones

Taiga Plains, Taiga Shield

Distribution

Clarke's (1981: 165) range which, covers areas north of BC, AB, and SK surrounding Great Slave Lake.The EO of Clarke's range is ~310,000 km. sq., as meaured by MapSource (clipped at the borders).
References: 
B100
A393

Number of Occurrences

There are 26 records for this species from NT in examined Canadian collection databases; all are in the CMN, collected between 1944 and 1966 (Lepitzki 2013). All the records do appear to be associated with Great Slave Lake. All the known records are approaching being at least 50 years old.
References: 
H311
R275
General Status Rank
Rank: 
Undetermined
Status Rank Description: 
All the known records are approaching being at least 50 years old. Johnson et al. (2013) include NT in the species' Canadian range.
S Rank: 
SU
Decision Process Description: 
Draft ranks from Dwayne A.W. Lepitzki 2015
Last Updated: 
March 18, 2015

References

Number of Occurrences

  • Gerry Mackie, Dwayne A.W. Lepitzki, Robert Forsyth (2015) e-copy - H311 Return
  • Lepitzki, D. A. W. (2013) For General Status of Species in Canada, Canadian Wildlife Service, 614 and excel flle e-copy - R275 Return

Range Extent

  • Clarke AH (1981) The Freshwater Molluscs of Canada. National Museums of Canada RWED Library Call #QL407.5.C5 - B100 Return
  • Johnson PD, Bogan AE, Brown KM, Burkhead NM, Cordeiro JR, Garner JT, Hartfield PD Lepitzki DAW, Mackie GL et al. . (2013) Fisheries 38(6):247-282 - A393 Return