Sightings Elsewhere in the Region

From November 11, 1992 (update #15)

CIRCLEVILLE, Ohio - Zebra mussels have been found for the first time in an inland Ohio reservoir, according to Ohio State University biologist Dave Culver. The reservoir, Hargus Lake, is an impoundment of Hargus Creek in Marion Lake State Park, more than 100 miles (160 kilometers) south of Lake Erie. The lake drains into the Scioto River, a tributary of the Ohio River. OSU students first observed the zebra mussels attached to aquatic vascular plants while conducting other investigations in the lake during late July and early August. Two subsequent scuba investigations of the lake confirmed the presence of a sizeable population of zebra mussels, Culver said. He noted that the lake has little available rocky substrate, and the mussels were found attached to submerged wood and vegetation. Hargus Lake is popular for its largemouth bass fishery, Culver said.

MARQUETTE, Mich. - The first confirmed sighting of a zebra mussel along the southern shoreline of Lake Superior occurred in mid-October at Wisconsin Electric Power Company's Presque Isle Power Plant. A single tiny mussel (about 1 mm long) was found on a substrate sampler that had continuously been in the water since mid-May, according to WEPCO Senior Results Technician John Babinec.

EAST LANSING, Mich. - No new inland sightings of zebra mussels were reported in the state of Michigan this summer, according to a distribution map prepared by Michaela Zint of the Michigan Sea Grant Zebra Mussel Information Office.

ZION, Ill. - Only low numbers of newly settled juveniles were observed on artificial substrates placed in southern Lake Michigan this summer by Illinois Natural History Survey personnel. Since veliger densities ranged from medium to very high (5,000 to 50,000 per cubic meter) from mid-June through the end of September, this indicates poor recruitment of larval mussels into the adult population.

ID: 19921111-3.

The Zebra Mussel Update was a 4- to 8-page quarterly national newsletter published by the University of Wisconsin Sea Grant Institute from May 1990 through May 1997. The ZMU documented the spread of the zebra mussel -- an exotic nuisance mussel -- through North America's freshwater environments, especially the Great Lakes, and on efforts to control it.