Epioblasma personata 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Bivalvia Unionoida Unionidae

Scientific Name: Epioblasma personata
Species Authority: (Say, 1829)
Common Name(s):
English Fine-rayed Pearly Mussel, Fine-rayed Pearlymussel, Round Combshell
Dysnomia personata Say, 1829
Plagiola personata (Say, 1829)
Taxonomic Notes: This species was historically placed in the genera Dysnomia and Plagiola (Johnson 1978) and is now placed in genus Epioblasma (Williams et al. 2008).

A list of synonyms for this species can be found on The MUSSEL project web site (Graf and Cummings 2011).

Assessment Information [top]

Red List Category & Criteria: Extinct ver 3.1
Year Published: 2011
Date Assessed: 2011-07-22
Assessor(s): Cummings, K. & Cordeiro, J.
Reviewer(s): Seddon, M.B., Collen, B. & Böhm, M.
Contributor(s): Bogan, A.E., Dyer, E., Soulsby, A.-M., Whitton, F., McGuinness, S., De Silva, R., Milligan, H.T., Kasthala, G., Herdson, R., Thorley, J., McMillan, K. & Collins, A.
Epioblasma personata has been assessed as Extinct. It was recorded historically from the Clinch River in the headwaters of the Tennessee River system, the White River (Wabash tributary), and in the low Wabash River at Posey Co., Indiana, as well as the Ohio River in Cincinnati. This species is known from shells only, no live individuals have been observed.
Previously published Red List assessments:
2000 Extinct (EX)
1996 Critically Endangered (CR)
1994 Extinct (Ex)
1990 Extinct (Ex)
1988 Extinct (Ex)
1986 Extinct (Ex)
1983 Extinct (Ex)

Geographic Range [top]

Range Description: This species is globally extinct. It is recorded historically from the Clinch River in the headwaters of the Tennessee River system, the White River (Wabash tributary), and in the lower Wabash River at Posey Co., Indiana, as well as the Ohio River in Cincinnati (Parmalee and Bogan 1998). In Tennessee, it is known historically from the Clinch River and from the Cumberland River near Priestly Shoals, Davidson Co. (Parmalee and Bogan 1998). In Alabama, it was historically distributed throughout the Tennessee River, but has not been reported since the river was impounded (Mirarchi 2004, Williams et al. 2008). In Kentucky, it formerly occurred in the Green and Ohio Rivers (Cicerello and Schuster 2003). In Indiana, it was formerly distributed in the Wabash River (Cummings and Mayer 1997). In Ohio, it formerly occurred in the Ohio River in Cincinatti (Watters 1995).
Countries occurrence:
Regionally extinct:
United States (Alabama, Indiana, Kentucky, Ohio, Tennessee)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This species has not been collected since the early 20th century (IUCN 1996). It historically occurred in the Ohio, Tennessee, Cumberland, and Wabah Rivers (Parmalee and Bogan 1998). In the Cumberland River, it ranged upstream to near the mouth of the Stones River (Parmalee and Bogan 1998). It occurred in most of the Tennessee River drainage, from headwaters in eastern Tennessee to the mouth of the Tennessee River, but a paucity of museum material suggests it was rare (Parmalee and Bogan 1998). All Alabama museum records were collected at Muscle Shoals, but it probably ranged across northern Alabama with the most recent material from 1924 (Williams et al. 2008).
Additional data:
Number of mature individuals: 0
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: This species presumably occurred in shoal habitat, primarily in large rivers (Parmalee and Bogan 1998).
Systems: Freshwater
Congregatory: Congregatory (and dispersive)

Threats [top]

Major Threat(s): This species presumably became extinct due to habitat loss and degradation (A. Bogan pers. comm. 2010).

Conservation Actions [top]

Conservation Actions: Williams et al. (in press) lists this species as extinct according to the AFS assessment.

Citation: Cummings, K. & Cordeiro, J. 2011. Epioblasma personata. The IUCN Red List of Threatened Species 2011: e.T7879A12860921. . Downloaded on 27 November 2015.
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