Dallas Area Freshwater Mussels

Freshwater mussels collected from Lewisville Lake, near Dallas, Texas

Drought conditions during August, 2000 lowered Lewisville Lake from the normal 722 feet above sea level to 707 feet.  Mussels normally under 10 feet of water were stranded on dry land and an easy meal for raccoons, birds, and other predators.  Conditions were ideal for collecting and allowed us to record some of the species existing in this lake.  All specimens collected were recently dead.

Bleufer
Potamilus purpuratus

Bleufer
Fragile Papershell
Leptodea fragilis

Fragile Papershell
Pink Papershell
Potamilus ohiensis

Pink Papershell
Louisiana Fatmucket
Lampsilis hydiana

Luisiana Fatmucket
Southern Mapleleaf
Quadrula apiculata

Southern Mapleleaf
Deertoe
Truncilla truncata

Deertoe
Western Pimpleback
Quadrula mortoni

Western Pimpleback
Threeridge
Amblema plicata

Threeridge
Lilliput
Toxolasma parvus

Lilliput
Giant Floater
Anodonta grandis

Giant Floater

A big Giant Floater
178mm
Giant Floater

Yellow Sandshell
Lampsilis teres

Yellow Sandshell

Wartyback
Quadrula nodulata

Wartyback

Asian Clam
Corbicula sp(p).

Asian Clam


Freshwater mussels collected from the Elm Fork of the Trinity River, near Lewisville Lake

The Elm Fork of the Trinity River below Lewisville Lake is home to many of the same mussel species that are found in the lake, including Bleufer, Fragile Papershell, Louisiana Fatmucket, Southern Mapleleaf, Threeridge, Deertoe, Giant Floater, Lilliput and Asian Clams.  Here are a few species that we found in the river that we did not find in the lake:  Pistolgrip, Yellow Sandshell and Threehorn Wartyback.  These were collected in shallow water about 5 miles below the lake, during October, November and December, 2000:

Pistolgrip
Tritogonia verrucosa

Pistolgrip
Tritogonia verrucosa

Threehorn Wartyback
Obliquaria reflexa
Threehorn Wartyback

Rock -pocketbook
Arcidens confragosus
Rock-pocketbook_sm.jpg (184033 bytes)

These specimens were collected as part of the Texas Parks & Wildlife Mussel Watch Program by Judy Lewis and John Caldeira.


A few links:
    North Texas Conchological Society
    John's Home Page

This page has been visited at least ehh.. five! times, maybe more.

This page was first published by John Caldeira, john@outdoorplace.org during August, 2000.  Updated January, 2005.  Content on this web site may be used without permission for any non-profit purpose,  except internet duplication.  Higher-resolution photos available upon request.