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A female zebra mussel begins to reproduce within 6–7 weeks of settling. [17] An adult female zebra mussel can produce 30,000 to 40,000 eggs in each reproductive cycle, and over 1 million each year. [18] Free-swimming microscopic larvae, called veligers, drift in the water for several weeks and then settle onto any hard surface they can find ...
The Dreissenidae are a family of small freshwater aquatic bivalve molluscs, commonly called mussels although not at all closely related to true mussels. The shells of these bivalves are shaped somewhat like those of true mussels, which they also resemble in attaching themselves to a hard substrate such as stone using a byssus; however, this group is more closely related to the venus clams ().
The Iowa Department of Natural Resources confirmed zebra mussels, an invasive species, were found in Saylorville Lake.
Ellipsaria lineolata is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This is the sole species in the monotypic genus Ellipsaria . This species is native to the drainage systems of the Mississippi River , the Mobile River , the Tennessee River , and the Cumberland River in the United States .
The most common types of dreissenids are Dreissena polymorpha (Zebra mussel) and Dreissena rostriformis (Quagga mussel). [14] These mussels damage both ecological systems and human infrastructure. In North America, biofouling caused by dreissenids created 267 million dollars’ worth of damage between 1989 and 2004. [ 14 ]
A mussel (genus Mytilus), attached to a rock by its byssus Illustration of the byssus of Dreissena polymorpha, the freshwater zebra mussel. A byssus (/ ˈ b ɪ s ə s /) is a bundle of filaments secreted by many species of bivalve mollusc that function to attach the mollusc to a solid surface.
The "seed" method uses grains of ground shell from freshwater mussels, and overharvesting for this purpose has endangered several freshwater mussel species in the southeastern United States. [18]: 367–403 The pearl industry is so important in some areas, significant sums of money are spent on monitoring the health of farmed molluscs. [99]
The taxonomic term Bivalvia was first used by Linnaeus in the 10th edition of his Systema Naturae in 1758 to refer to animals having shells composed of two valves. [3] More recently, the class was known as Pelecypoda, meaning "axe-foot" (based on the shape of the foot of the animal when extended).