Alabama (=inflated) heelsplitter (Potamilus inflatus)
Where Listed: WHEREVER FOUND
The inflated heelsplitter has an oval, compressed to moderately inflated, thin shell. The valves may gape anteriorly. The umbos are low, and there is a prominent posterior wing that may extend anterior to the beak in young individuals. The shell is brown to black and may have green rays in young individuals. The umbonal cavity is very shallow and the nacre is pink to purple. Maximum shell length is about 140 millimeters (5 1/2 inches) in adults (Stern 1976). It is most similar to the pinkpapershell (Potamilus ohioensis), yet is easily distinguished by shell morphology (Hartfield 1988). The shell and teeth of the inflated heelsplitter are more delicate, and the shell is darker and has a pointed posterior, whereas the pink papershell has a rounded posterior. The inflated heelsplitter appears more inflated due to a more developed and rounded posterior ridge. The posterior wing of the inflated heelsplitter is more pronounced and abruptly rounded over the dorsum. The pink papershell may lack much of a wing, and when pronounced, it may be only slightly rounded and extend scarcely above the dorsum (Hartfleld 1988).
- States/US Territories in which the Alabama (=inflated) heelsplitter, Wherever found is known to or is believed to occur: Alabama , Louisiana , Mississippi
- US Counties in which the Alabama (=inflated) heelsplitter, Wherever found is known to or is believed to occur: View All
- USFWS Refuges in which the Alabama (=inflated) heelsplitter, Wherever found is known to occur:
Bogue Chitto National Wildlife Refuge
|Status||Date Listed||Lead Region||Where Listed|
|09/28/1990||Southeast Region (Region 4)||Wherever found|
» Federal Register Documents
|07/29/2008||73 FR 43947 43948||5-Year Status Review of 20 Southeastern Species|
|09/23/2014||79 FR 56821 56823||5-Year Status Reviews of 27 Southeastern Species; Notice of initiation of reviews; request for information|
|10/27/1989||54 FR 43835 43839||ETWP; Proposed Threatened Status for the Inflated Heelsplitter, Potamilus inflatus; 54 FR 43835 43839|
|09/28/1990||55 FR 39868 39872||ETWP; Determination of Threatened Status for the Potamilus inflatus (Inflated Heelsplitter); 55 FR 39868 39872|
|Date||Title||Plan Action Status||Plan Status|
|04/13/1993||Inflated Heelsplitter||View Implementation Progress||Final|
|Date||Citation Page||Title||Document Type|
|09/23/2014||79 FR 56821 56823||5-Year Status Reviews of 27 Southeastern Species; Notice of initiation of reviews; request for information||
|07/29/2008||73 FR 43947 43948||5-Year Status Review of 20 Southeastern Species||
» Critical Habitat
No critical habitat rules have been published for the Alabama (=inflated) heelsplitter.
» Conservation Plans
No conservation plans have been created for Alabama (=inflated) heelsplitter.
» Life History
The preferred habitat of this species is soft, stable substrates in slow to moderate currents (Stern 1976). It has been found in sand, mud, silt and sandy gravel, but not in large gravel or armored gravel (Hartfield 1988). It is usually collected on the protected side of bars and may occur in depths over 20 feet. The occurrence of this species In silt may not indicate that the life cycle can be successful in that substrate (Hartfield 1988). Adult mussels may survive limited amounts of silt where juveniles would suffocate. The occurrence of this species in silt may be because it was established prior to deposition of the silt.
» 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.
FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.