Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops ...
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Most forms are sedentary filter feedersFood particles collected on gills and entangled in mucus -cilia on gills convey food to mouthPlanktonic larval stage (trochophore) allows dispersalScallops are unique, very mobile formsswim by open and closing shellAbundant in marine and freshwater habitatsFreshwater mussels distributed worldwideMore than 500 species live in lakes and rivers of North AmericaLarvae brooded in special pouch in gill chamberLarvae are parasites on fish - larvae are called glochidia