ELKTOE |

Photo by Edwin Miller
used by permission
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Elktoe
Alasmidonta marginataFederal Status:
None
State Status:
Endangered |
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- Range:

Dark Blue = Counties with designated critical habitat
Light Blue = Historical records
A detailed range map may be found in the Mussel Bed
- Comments:
The elktoe has a beautifully-marked shell with narrow rays and spots on a background
of bright, yellowish green. It is relatively thin-shelled with poorly developed interior
teeth. Freshwater mussels have an extendible foot used for locomotion. In the elktoe, it
is orange and elongated. In Kansas, the elktoe is found in the Spring and Marais des
Cygnes rivers. It lives under swift, flowing riffles in stable gravel or gravel-sand
substrates. The larval form of this mussel has a pair of hooks that enable it to clamp
onto a fishs fin. If the fish is a suitable host, the glochidia (larvae) eventually
transform into juvenile mussels and drop off. The host fishes found in Kansas are the
white sucker, northern hogsucker, shorthead redhorse and warmouth.

Other Gastropods on
the Kansas T&E List
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Kansas Wildlife Refuge
Text: Ed Miller and Bob Gress
Range Maps and Web Design: Jim Mason
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