Pond Fingernail Clam

Musculium securis (Sphaerium securis)

General Status Rank: 
Undetermined
Common Name: 
Pond Fingernail Clam
Scientific Name: 
Musculium securis (Sphaerium securis)
Synonyms: 
Sphaerium securis
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Taxonomy
Group: 
Mollusc (Freshwater Bivalve)
Kingdom: 
Animalia
Phylum: 
Mollusca
Class: 
Bivalva (Freshwater)
Order: 
Veneroida
Family: 
Sphaeriidae
References: 
B100
Habitat
in freshwater lakes, ponds, rivers and streams of all sizes, both perennial and vernal habitats with mud and abundant vegetation
References: 
B100
Distribution

Ecozones

Taiga Plains, Boreal Plains
References: 
B100

Distribution

0.06
Score: 
F
References: 
B100

Number of Occurrences

Mills lake (1917: E M Kindle) and based on Canadian Museum of Nature records;
References: 
B207

Area of Occupancy

Score: 
-
Threats

Threats

Lives 1 year or less and produces few young in two to three broods per year. Dispersal mechanisms good with records from maritimes to British Columbia and Northwest Territories
References: 
H311

Intrinsic Vulnerability

Score: 
-
References: 
H311
General Status Rank
Rank: 
Undetermined
Status Rank Description: 
- Recorded only from shores of Great Slave Lake.Population sizes can be large, diverse dispersal mechanisms for good potential to spread.
S Rank: 
SU
Decision Process Description: 
Draft ranks from Gerry Mackie 2015
Last Updated: 
March 17, 2015

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

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