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Eastern
Floater (Pyganodon cataracta)
| Description |
-Shell: 150
mm long, 75 mm high and 65 mm wide
-Periostracum*: shiny and grass-green, or modified with
yellow or brown, or simply brown all over
-Nacre**: silvery or white, tinged with blue or yellow,
and iridescent |
| Distribution |
-Lower St. Lawrence
River drainage and Maritime Provinces south in the Atlantic drainage
to the Gulf of Mexico drainage |
| Ecology |
-Ponds, lakes, and
streams of various widths down to small brooks
-Most abundant in mud but also occurs on sand and, less frequently,
on gravel |
Source: Clark Arthur H. 1981. The Freshwater Molluscs
of Canada. National Museum of Natural Sciences/ National
Museums of Canada
*Periostracum: the outer
parchment-like layer of a mollusc shell
**Nacre: the pearly inner layer characteristic of some
mollusc shells
Eastern Floater
in the Petitcodiac River Watershed
- "Common and/or abundant"
in areas of appropriate habitat
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