Common name: elktoe
available through www.itis.gov
Size: reaches 90 mm long
Native Range: Ohio, Tennessee, Cumberland, Susquehanna, and St. Lawrence drainages; Lake Huron.
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Alasmidonta marginata are found here.
Table last updated 9/30/2019
† Populations may not be currently present.
Means of Introduction: Probably a natural migration via the Erie Canal.
Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.
Revision Date: 4/21/2004
Benson, A.J., 2020, Alasmidonta marginata: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=2235, Revision Date: 4/21/2004, Access Date: 2/18/2020
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.