Pisidium


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Pisidium

 

a genus of freshwater bivalves of the Sphaeridae family. The shell is oval (length 2–10 mm) with its apexes directed toward the rear. The animals are found in fresh bodies of water on all continents. In the USSR there are a few dozen genera in a great variety of waters, including rivers, lakes, ponds, pools, and underground waters. They feed on bacteria and organic residues suspended in the water; they are eaten by certain fish.

References in periodicals archive ?
Temperature- and parasite-induced changes in toxicity and lethal body burdens of pentachlorophenol in the freshwater clam Pisidium amnicum.
Digenean parasites of the bivalve mollusc Pisidium amnicum in a small river in eastern Finland.
Note also that most of the molluscs consumed in this study were represented by species such as Pisidium sp.
In laboratory, animals were determined to species level, except Oligochaeta, Ostracoda, Pisidium and Sphaerium clams, leeches, insect larvae, and juvenile gammarids.
Low densities or a complete lack of Coleoptera (Acilius and Dytiscus), Hirudinae (Erpobdella, Glossiphonia, and Nephelopsis), Trichoptera (Triaenodes, and Limnephilus), Notonecta, Somatochlora, Hyalella and Pisidium also helped define this community.
2000) as the bivalves Pisidium amnicum (Muller, 1774) and the snails Valvata profunda (Clessin, 1887) and Valvata depressa (Pfeiffer, 1828).
Muller), and Pisidium casertanum (Poli)] were studied.
Pisidium (Pisidium) idahoense Roper, 1890 giant northern peaclam Native