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Figure 11. Cages used to propagate Higgins’eye pearlymussels on the Upper Mississippi River. Cages are constructed of aluminum sides, base and ½-inch screen. The top left photo shows two types of cages; the cage on the left is used in low current areas and the right one in higher velocity areas. These are open cages with no bottoms; closed cages have a 3/8-inch plywood bottom to collect transformed mussels (top right photo). The middle and bottom photos show the process of transporting cages (closed) to the relocation site, adding host fish (smallmouth bass) and placing cages on the river bottom. (photos courtesy of the Minnesota Department of Natural Resources and U.S. Fish and Wildlife Service)
Figure 11. Cages used to propagate Higgins’eye pearlymussels on the Upper Mississippi River. Cages are constructed of aluminum sides, base and ½-inch screen. The top left photo shows two types of cages; the cage on the left is used in low current areas and the right one in higher velocity areas. These are open cages with no bottoms; closed cages have a 3/8-inch plywood bottom to collect transformed mussels (top right photo). The middle and bottom photos show the process of transporting cages (closed) to the relocation site, adding host fish (smallmouth bass) and placing cages on the river bottom. (photos courtesy of the Minnesota Department of Natural Resources and U.S. Fish and Wildlife Service)
Saving the Higgins' Eye Pearlymussel (Lampsilis higginisii) from Extinction:
2002 Status Report on the Accomplishments of the Mussel Coordination Team

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Last updated on May 3, 2005
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