Snake River Physa snail (Physa natricina)
Kingdom: Animalia Class: Gastropoda Order: Basommatophora Family: Physidae
Listing Status:
General Information
The Snake River physa snail (Haitia (Physa) natricina, Taylor 1988) is a freshwater mollusc found in the middle Snake River of southern Idaho. It has an ovoid shell that is amber to brown in color, and has 3 to 3.5 whorls. The physa can reach a maximum length of about 6.5 mm. The Snake River physa is believed to have evolved in the Pleistocene-Holocene lakes and rivers of northern Utah and southeastern Idaho. The species may have existed in the Snake River for approximately 3.5 million years ago. While much information exists on the family Physidae, very little is known about the biology or ecology of this species. It is believed to be confined to the Snake River, inhabiting areas of swift current on the undersides of large cobbles and boulder-sized rocks. In 1995, the Service reported the known modern range of the species to be from Grandview, Idaho (ca. RM 487) to the Hagerman Reach of the Snake River (ca. RM 573). The Snake River physa is rare with fewer than 50 total individuals having been collected. The recovery area for the species extends from Snake River mile 553 to Snake River mile 675. It is currently listed as an Endangered species.
- States/US Territories in which the Snake River Physa snail is known to occur: Idaho
» Federal Register Documents
| Date | Citation Page | Title |
|---|---|---|
| 12/14/1992 | 57 FR 59244 59257 | ETWP; Determination of Endangered or Threatened Status for Five Aquatic Snails in South Central Idaho; 57 FR 59244 59257 |
| 11/21/1991 | 56 FR 58664 58666 | ETWP; Annual Description of Progress on Listing Actions and Findings on Recycled Petitions; 56 FR 58664 58666 |
| 12/18/1990 | 55 FR 51931 51936 | ETWP; Proposed Endangered Status for Five Idaho Aquatic Snails; 55 FR 51931 51936 |
| 04/25/1990 | 55 FR 17475 17476 | ETWP; Annual Description of Progress on Listing Actions and Findings on Recycled Petitions; 55 FR 17475 17476 |
| 12/29/1988 | 53 FR 52746 52749 | Findings on Pending Petitions & Description of Progress on Listing Actions; 53 FR 52746-52749 |
» Recovery
Recovery Plan Information Search| Date | Title | Plan Action Status | Plan Status |
|---|---|---|---|
| 11/26/1995 | Snake River Aquatic Species Recovery Plan | View Implementation Progress | Final |
» Critical Habitat
No critical habitat rules have been published for the Snake River Physa snail.
» Conservation Plans
No conservation plans have been created for Snake River Physa snail
» Petitions
| Date | Citation Page | Title | Finding |
|---|---|---|---|
| 01/20/1984 | 49 FR 2485 2488 | Findings on Pending Petitions & Description of Progress on Listing Actions; 49 FR 2485-2488 |
» Life History
No Life History information has been entered into this system for this species.
» Other Resources
NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.
ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
