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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 ().
Dreissena is a genus of small freshwater mussels in the family Dreissenidae in the class Bivalvia. They are found attached to firm substrates by threads from underneath the shells and are the only freshwater bivalves to attach to hard substrates in high densities while having a planktonic larval stage.
In the 20th century, mussels were often collected for the cultured pearl industry, though this is no longer in practice. Their slow growth and very specific reproduction requirements can be a challenge to recovery. The introduced Asian clam and zebra mussel also pose threats to the species. [7]
Mussel (/ ˈ m ʌ s ə l /) is the common name used for members of several families of bivalve molluscs, from saltwater and freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other edible clams, which are often more or less rounded or oval.
Zebra mussel larvae were first detected in the reservoir in June 2022 in a water sample collected by the National Park Service (NPS) at Amistad National Recreation Area.
The quagga mussel resembles the zebra mussel, just as its namesake (quagga) resembles the zebra. The quagga mussel shell can be distinguished from the zebra mussel shell because it is paler toward the end of the hinge. It is also slightly larger than the zebra mussel, about 20 mm (0.8 in) wide, roughly about the size of an adult human's thumbnail.
One of the largest threats to the combshell is the invasive species known as the zebra mussel (Dreissena polymorpha). Originally native to the lakes of southern Russia and Ukraine, the Zebra mussel was introduced into the rivers of North America in 1988. The zebra mussel and the Cumberlandian combshell fight for the same resources, which puts ...