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Article written by Cal Fremling regarding mass emergences of mayflies along the Mississippi River, samples taken over a four year period (summers of 1957-1961), and patterns shown as result. Fremling is credited as "Winona State College, Minnesota, U.S.A." Other credit notes: "The author would like to acknowledge assistance received from the following people at Iowa State University of Science and Technology. Many of the emergence records reported here were collected by Clarence Carlson and Thomas Wenke. Dr. Kenneth D. Carlander has provided guidance during the study and in the preparation of the manuscript." Article copied from Verhandlungen des Internationalen Verein Limnologie (Verh. Internat. Verein Limnol.), volume XV, February 1964. 6 pages. Part of the Cal R. Fremling Collection.
Biologists; Insects Behavior
Fremling, Cal R., "Rhythmic Hexagenia mayfly emergences and the environmental factors which influence them" (1964). Cal Fremling Papers. 15.
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