They arrived in the Great Lakes, probably in ships' ballast, and quickly overwhelmed the larger native mussel population.

Marketing demands have reduced the mussel population greatly, and now they are often "grown" by farmers on floating barges where they can be easily "picked" when ready.

A large, wild mussel population was known to exist in the sound, and now commercial mussel farms operate within the area that grow and harvest Blue mussels.

Deteriorating water quality and siltation also affects mussel populations.

However, blue mussel populations show extensive hybridisation worldwide and are a well studied example of a marine hybrid zone.

The River Ehen supports the largest freshwater pearl mussel population in England.

The infection rate in wild green-lipped mussel populations can range from 0 to 70%.

This attachment is the prerequisite for the foundation for the blue mussel population.

Mussel beds are persistent, dense mussel populations.

Once home to 27 species of freshwater mussel, Cedar Creek has experienced a drastic decline in mussel population since the 1980s.