Shiny Pea Clam

Pisidium nitidum

General Status Rank: 
Secure
Common Name: 
Shiny Pea Clam
Scientific Name: 
Pisidium nitidum
Synonyms: 
Pisidium ventricosum form rotund
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Taxonomy
Group: 
Mollusc (Freshwater Bivalve)
Kingdom: 
Animalia
Phylum: 
Mollusca
Class: 
Bivalva (Freshwater)
Order: 
Veneroida
Family: 
Sphaeriidae
References: 
B100
Habitat
all kinds of perennial freshwater habitats, on various substrates, and most commonly in shallow water; Occurs in eutrophic and oligotrophic waters, small to large rivers, small to large lakes; tolerant of short terms of anoxia in perrenial ponds with organic substrates. Common in shallows (<10m) and deep (50m) waters of large lakes in silt, sand, or organic muds; can urvive short periods of anoxia, suggesting some tolerance to eutrophication.
References: 
B100
H311
Distribution

Ecozones

Southern Arctic, Taiga Cordillera, Taiga Plains, Taiga Shield, Boreal Cordillera, Boreal Plains
References: 
B100

Distribution

0.82 Recorded from small (e.g. Keller Lake) and large lakes (e.g. Great Slave and Great Bear lakes) and rivers (e.g. Mackenzie River) from southern to northern NWT.
Score: 
G
References: 
B100

Number of Occurrences

13: Based on Canadian Museum of Nature records;
Score: 
BD
References: 
B207
B208

Area of Occupancy

Score: 
-
Population

Population Size

common
References: 
B100
Threats

Threats

Lives only ~1 year and produces few young. Dispersal mechanisms apparently excellent being wide spread throughout Canada.
Score: 
C
References: 
H311

Intrinsic Vulnerability

Score: 
-
References: 
H311
General Status Rank
Rank: 
Secure
Status Rank Description: 
- Recorded from small (e.g. Keller Lake) and large lakes (e.g. Great Slave and Great Bear lakes) and rivers (e.g. Mackenzie River) from southern to northern NWT.
S Rank: 
S4S5
Decision Process Description: 
Draft ranks from Gerry Mackie 2015
Last Updated: 
March 31, 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
  • Gerry Mackie, Dwayne A.W. Lepitzki, Robert Forsyth (2015) e-copy - H311 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

Population Size

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