|
|
|
|
|
|
Mississippi National River and Recreation Area
Wabash Pigtoe
|
|
|
|
|
|
|
(Fusconaia flava) Rafinesque, 1820
|
|
|
K.S. Cummings, Illinois Natural History Survey |
|
| | | | |
Creeks to large rivers in mud, sand, or gravel.
|
| | | |
Red, yellow or brown, sometimes with rays.
|
| |
White or salmon, with some iridescent coloring on the longest end of the shell (measured from the point where the two shell halves meet.)
|
| | | |
The overall outline is round, but the edges are somewhat triangular(imagine a triangle blown up, like a balloon). The outline of the shell edge farthest from the beak (which is the swelling above where the two shells join) narrows to a short, blunt point.
|
| |
Feels like rough cloth. No bumps. The entire shell surface can either bulge out or look somewhat flattened. The face looks slightly pressed-in from the beak to the opposite shell edge (it looks similar to the pressed-in mark your thumbprint would make on wet clay).
|
| |
Shell red, yellow or brown, occasionally with rays. Subtriangular. Postbasal margin: pointed. Disc: sulcate. Ventral margin: concave. Posterior ridge: sharp. Postbasal mantle margin: simple (no specail structures). Marsupium: tetragenous (4-parted). Soft parts usually red,orange or white; especially musculature and gravid marsupium. Sexes alike.
|
| | | |
Bluegill, Silver Shiner, White Crappie, Black Crappie, Creek Chub
|
| | | | | | | |
|
| |
|
|
|
|
|
|
|
|
Did You Know?
In 1952, the Mississippi River flooded hundreds of acres of farmland and multiple cities. Over 2,000 families were homeless because of the high water.
more...
|
|
|
|
Last Updated: September 20, 2006 at 14:47 EST |