Species: Valvata humeralis
Glossy Valvata
Species
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Heterostropha
Family
Valvatidae
Genus
Valvata
NatureServe
Classification
Informal Taxonomy
Animals, Invertebrates - Mollusks - Freshwater Snails
Formal Taxonomy
Animalia - Mollusca - Gastropoda - Heterostropha - Valvatidae - Valvata - >
Ecology and Life History
Habitat Type Description
Freshwater
Migration
false - false - false
Non-migrant
false
Locally Migrant
false
Reproduction Comments
This species is hermaphroditic. Miller et al. (2006) showed that outcrossing is likely common in natural populations, but could not eliminate the possibility that this species is capable of producing offspring via self-fertilization.
Conservation Status
NatureServe Global Status Rank
G5Q
Global Status Last Reviewed
2007-05-07
Global Status Last Changed
1999-09-14
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=SH&US.AZ=SNR&US.CA=SNR&US.CO=SNR&US.ID=SNR&US.MT=SNR&US.OR=S2&US.UT=SH&US.WA=SNR&US.WY=SNR" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
FH - 20,000 to >2,500,000 square km (about 8000 to >1,000,000 square miles) - FGH - Widely distributed in Western North America (and possibly Mexico unless you believe Hovingh, below). Hovingh (2004) noted no specimens in surveys across all western states and museum collections except the holotype matched the original description and indicated this species may be a Mexican endemic with U.S. populations being <i>Valvata californica</i>. Hovingh (2004) proposes <i>Valvata californica</i> Pilsbry, 1908 (type locality Big Bear Lake, CA) as senior synonym to U.S. and Canadian <i>Valvata humeralis</i>.
Global Range Code
FH
Global Range Description
20,000 to >2,500,000 square km (about 8000 to >1,000,000 square miles)