Alabama moccasinshell (Medionidus acutissimus)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

Most populations of the Alabama moccasinshell are small and localized where they are found. In a survey of 31 sites in the Conasauga River, Georgia/Tennessee, only 3 specimens were found at a single site, while single individuals were collected from 3 of 7 sites surveyed in Holly Creek (Johnson in litt. 2005). At localized sites in the Sipsey River, the Alabama moccasinshell may be relatively common (~ 2/m2) (Haag in litt 2005). In the years leading up to and following listing, the species has also been found to be relatively common in the Sipsey Fork and several of its tributaries in Bankhead National Forest, Winston/Lawrence Counties, Alabama, than at other locations. The Sipsey Fork drainage populations in the National Forest were quantified in 1993 (Haag and Warren 1994), and densities were found to range from 0.08 to 0.28/m2 (Warren and Haag, 1994). The same populations were sampled again in 2002 (Haag and Warren 2003b). All monitored populations of Alabama moccasinshell had experienced significant declines in abundance in 2002, however some recruitment was observed. The decline was manifested in all species of mussels, and was attributed to a major drought in 2000 (Haag and Warren 2003b)

  • States/US Territories in which the Alabama moccasinshell, Wherever found is known to or is believed to occur:  Alabama , Georgia , Mississippi
  • US Counties in which the Alabama moccasinshell, Wherever found is known to or is believed to occur:  View All
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
03/17/1993 Southeast Region (Region 4) Wherever found

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
03/26/2003 68 FR 14752 14832 Endangered and Threatened Wildlife and Plants; Proposed Designation of Critical Habitat for Three Threatened Mussels and Eight Endangered Mussels in the Mobile River Basin; Proposed Rule
03/17/1993 58 FR 14330 14340 Endangered Status for Eight Freshwater Mussels and Threatened Status for Three Freshwater Mussels in the Mobil River Drainage
06/29/1998 63 FR 35277 35278 Notice a Availability of a Revised Draft Recovery Plan for the Mobile River Basin Aquatic Ecosystem for Review and Comment
11/19/1991 56 FR 58339 58348 ETWP; Proposed Endangered Status for Eight Freshwater Mussels and Proposed Threatened Status for Three Freshwater Mussels in the Mobile River Drainage; 56 FR 58339 58348
06/14/2005 70 FR 34492 34494 Initiation of 5-Year Reviews of 25 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
07/01/2004 69 FR 40084 40171 Designation of Critical Habitat for Three Threatened Mussels and Eight Endangered Mussels in the Mobile River Basin Mussels in Mobile River Basin, AL

» Recovery

Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
11/17/2000 Recovery Plan for the Mobile River Basin (15 species) View Implementation Progress Final
Other Recovery Documents
Date Citation Page Title Document Type
06/29/1998 63 FR 35277 35278 Notice a Availability of a Revised Draft Recovery Plan for the Mobile River Basin Aquatic Ecosystem for Review and Comment
  • Notice Recovery Plan Avail.
06/14/2005 70 FR 34492 34494 Initiation of 5-Year Reviews of 25 Southeastern Species
  • Notice 5-year Review, Initiation
09/23/2014 79 FR 56821 56823 5-Year Status Reviews of 27 Southeastern Species; Notice of initiation of reviews; request for information
  • Notice 5-year Review, Initiation
Five Year Review
Date Title
04/07/2008 11 Southeastern mussels 5-year review

» Critical Habitat

Date Citation Page Title Document Type Status
07/01/2004 69 FR 40084 40171 Designation of Critical Habitat for Three Threatened Mussels and Eight Endangered Mussels in the Mobile River Basin Mussels in Mobile River Basin, AL Final Rule Final designated
03/26/2003 68 FR 14752 14832 Endangered and Threatened Wildlife and Plants; Proposed Designation of Critical Habitat for Three Threatened Mussels and Eight Endangered Mussels in the Mobile River Basin; Proposed Rule Proposed Rule Not Required

To learn more about critical habitat please see http://ecos.fws.gov/crithab

» Conservation Plans

No conservation plans have been created for Alabama moccasinshell.

» Petitions

» Life History

Habitat Requirements

Although new tributary populations have been discovered since listing, they are generally characterized as small, localized, and with low densities. Low numbers in many stream drainages suggest marginal habitat conditions. All drainage populations remain susceptible to stochastic and chronic events (e.g., spills, drought and/or landuse runoff).

Movement / Home Range

At the time of listing, the Alabama moccasinshell was known to survive in 7 drainages of the Mobile River Basin. The species is now known from 12 drainage populations: Tombigbee River tributaries, including Bull Mountain Creek (Itawamba County, Mississippi), Luxapalila Creek (Lowndes County, Mississippi) and tributary Yellow Creek (Lowndes County, Mississippi; Lamar County, Alabama), Buttahatchee River (Lowndes/Monroe County, Mississippi, Lamar County, Alabama), and tributary Sipsey Creek (Monroe County, Mississippi), Lubbub Creek (Pickens County, Alabama), and Sipsey River (Greene/Pickens County, Alabama); Black Warrior River tributaries, including the Sipsey Fork and tributaries (Winston/Lawrence County, Alabama); and Holly Creek (Murray County, Georgia) in the Coosa River drainage (Dodd et al., 1986; Evans 2001; Hartfield and Bowker, 1992; Hartfield and Jones, 1989, 1990; Johnson and Evans, 2000; Jones, 1991; Jones and Majure, 1999; McGregor, 1992; McGregor et al., 1996; McGregor, 2000; McGregor et al., 2000; MS Museum of Natural Science collection record, 1984-2001; Pierson, 1991a, b; Warren and Haag, 1994; Yokley, 2001). The range of the Alabama moccasinshell remains highly fragmented by dams and impounded waters, with little connectivity between tributary populations.

» 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.