This practice was common when the industry mussel was primarily the cockscomb pearl mussel ( " Cristaria plicata " ).
12.
Knut used a river pearl mussels from the river in B?to decorate both the grip board and the tailpiece.
13.
The outer layer of pearls and the inside layer of pearl oyster and freshwater pearl mussel shells are made of nacre.
14.
Many rivers and lochs were rich in salmon and trout, and the pearl mussel was found in the bed of the Conon.
15.
The freshwater pearl mussel grows extremely slowly, inhaling water through exposed siphons, and filtering out tiny organic particles on which it feeds.
16.
Although the name " freshwater pearl mussel " is often used for this species, other freshwater mussel species can also create " Unio ".
17.
The river is a designated Special Area of Conservation, containing one of the largest surviving populations in Northern Ireland of the freshwater pearl mussel.
18.
Should they become dislodged, freshwater pearl mussels can rebury themselves, and are also capable of moving slowly across sandy sediments, using their large, muscular foot.
19.
Pearl oysters are not closely related to either the edible oysters of family Ostreidae or the freshwater pearl mussels of the families Unionidae and Margaritiferidae.
20.
In early summer each year, around June and July, male freshwater pearl mussels release sperm into the water, where they are inhaled by female mussels.
