Lake Fingernail Clam

Musculium lacustre (Sphaerium lacustre)

General Status Rank: 
Secure
Common Name: 
Lake Fingernail Clam
Scientific Name: 
Musculium lacustre (Sphaerium lacustre)
Synonyms: 
Sphaerium lacustre
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Taxonomy
Group: 
Mollusc (Freshwater Bivalve)
Kingdom: 
Animalia
Phylum: 
Mollusca
Class: 
Bivalva (Freshwater)
Order: 
Veneroida
Family: 
Sphaeriidae
References: 
B100
Habitat
in perennial freshwater lakes, ponds, rivers, and streams of all sizes; ordinarily found on mud, but sometimes on sand
References: 
B100
Distribution

Ecozones

Taiga Plains, Taiga Shield, Boreal Plains
References: 
B100

Distribution

0.21
Score: 
G
References: 
B100

Number of Occurrences

4: GSL (3) and Lac La Martre (1959)Based on Canadian Museum of Nature records;
Score: 
AC
References: 
B207
B208

Area of Occupancy

Score: 
-
Threats

Threats

Lives 1 year or less and produces few young in two to three broods per year. Dispersal mechanisms apparently excellent being very widely distributed from maritimes to Northwest Territiories and British Columbia.
Score: 
C
References: 
H311

Intrinsic Vulnerability

Score: 
-
References: 
H311
General Status Rank
Rank: 
Secure
Status Rank Description: 
- Recorded from ponds, rivers, and small and large (e.g. Great Slave Lake) lakes in southern to central NWT.Population sizes can be large
S Rank: 
S3S4
Decision Process Description: 
Draft ranks from Gerry Mackie 2015
Last Updated: 
July 28, 2016

References

Ecozones

  • Clarke AH (1981) The Freshwater Molluscs of Canada. National Museums of Canada RWED Library Call #QL407.5.C5 - B100 Return

Habitat

  • Clarke AH (1981) The Freshwater Molluscs of Canada. National Museums of Canada RWED Library Call #QL407.5.C5 - B100 Return

Intrinsic Vulnerability

  • Gerry Mackie, Dwayne A.W. Lepitzki, Robert Forsyth (2015) e-copy - H311 Return

Number of Occurrences

  • Clarke, A.H. (1973) Malacologia 13: 1-509 http://ia902505.us.archive.org/3/items/malacologia131973inst/malacologia131973inst.pdf - B207 Return
  • Mackie, G.L. (2007) Ohio Biological Survey, Columbus, Ohio, 436.pp. - B208 Return

Range Extent

  • Clarke AH (1981) The Freshwater Molluscs of Canada. National Museums of Canada RWED Library Call #QL407.5.C5 - B100 Return

Taxonomy

  • Clarke AH (1981) The Freshwater Molluscs of Canada. National Museums of Canada RWED Library Call #QL407.5.C5 - B100 Return

Threats

  • Gerry Mackie, Dwayne A.W. Lepitzki, Robert Forsyth (2015) e-copy - H311 Return