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Article written by James R. Erickson regarding mayfly habitats in bodies of water near Winona, Minnesota. Bodies of water surveyed and sampled: Lake Winona, the Gravel Pit (man-made lake), and Crooked Slough. Cal Fremling is cited for previous research on mayflies and for his screened pail sifter article. Erickson is credited as: "B.S., Biology, 1961; M.S., emphasis in zoology, 1962; from Winona State College. Currently teaching biology [Mounds View High School, St. Paul, Minnesota]." Abstract/summary: "Three small lakes near Winona, Minnesota, were sampled to determine if they supported populations of Hexagenia mayfly nymphs. Hexagenia nymphs were rare in Lake Winona and the Gravel Pit, and none was found in Crooked Slough. A low dissolved oxygen content at the mud-water interface is probably the limiting factor in Lake Winona and Crooked Slough. The limiting factor in the Gravel Pit is probably the bottom type." Article reprinted from the Journal of the Minnesota Academy of Science, volume 32, number 1, 1964. 2 pages. Part of the Cal R. Fremling Collection.

Publication Date


Item Type





Winona, Minnesota


Biologists; Insects Behavior; Equipment; Lake Winona; Mayflies


Special Collections-Library



Rights Management

Requests to reproduce this image must be granted by the Winona County Historical Society.

Contributing Institution

Winona County History Center

Master File Format


Fiscal Sponsor

This project has been financed in part with funds provided by the State of Minnesota from the Arts and Cultural Heritage Fund through the Minnesota Historical Society.

Scanning Responsibility

Northern Micrographics

Date Digital

2019-06-24 00:00

Metadata Creation Responsibility

Anna Gaffey

Unique Identifier


Three southeastern Minnesota lakes as possible habitat for Hexagenia mayflies



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