Species: Fisherola nuttalli
Shortface Lanx
Species
Encyclopedia of Puget Sound
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Classification
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Basommatophora
Family
Lymnaeidae
Genus
Fisherola
NatureServe
Classification
Informal Taxonomy
Animals, Invertebrates - Mollusks - Freshwater Snails
Formal Taxonomy
Animalia - Mollusca - Gastropoda - Basommatophora - Lymnaeidae - Fisherola
Ecology and Life History
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Habitat Type Description
Freshwater
Migration
false - false - false - Slow snail-like crawl, or subject to transport by stream current.
Non-migrant
false
Locally Migrant
false
Food Comments
Feed by scraping algae and diatoms from rock surfaces in the streams. May occasionally feed on other plant surfaces.
Reproduction Comments
Freshwater pulmonates generally reproduce by copulation and cross-fetilization. Eggs are laid from spring to autumn in gelatinous capsules attached to plants, stones, or other objects. They lack a free-swimming larval stage, and hatch as young snails, anatomically complete except for the reproductive system (Hyman 1967).
Ecology Comments
"Generally, freshwater snails require access to air for respiration (although integumental oxygen transfer may occur). They are resistant to cold and freezing. Light intensity is not important except as it affects growth of their food sources" (Hyman 1967). Given F. NUTTALLI'S highly oxygenated habitat, integumental respiraton may be more important than suggested by other other freshwater snails known to Hyman. They are probably food items for fish, frogs, salamanders or birds.
Length
1
Conservation Status
NatureServe Global Status Rank
G2
Global Status Last Reviewed
2008-02-19
Global Status Last Changed
2000-06-02
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=SNR&CA.BC=S1&CA.SK=SNR&US.ID=S2&US.MT=SH&US.OR=S1&US.UT=SNR&US.WA=S2&US.WY=SNR" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
CE - 250-20,000 square km (about 100-8000 square miles) - CDE - It is found in the Columbia River drainage system of the Pacific Northwest, including Idaho, Washington, Oregon, and Montana. Its presence in the Columbia River drainage in British Columbia is assumed from the discovery of a shell (Clarke 1981). It may also occur in the Okanagan River drainage in British Columbia. Confirmed in the Deschutes River of Oregon (Neitzel and Frest 1990).
Global Range Code
CE
Global Range Description
250-20,000 square km (about 100-8000 square miles)