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A Trophic Analysis Of Three Species Of Elmidae From Polecat And Riley Creeks, Coles County, Ill., Robert D. Davis Jr.
A Trophic Analysis Of Three Species Of Elmidae From Polecat And Riley Creeks, Coles County, Ill., Robert D. Davis Jr.
Masters Theses
The food habits of Stenelmis sexlineata, Stenelmis vittipennis, Stenelmis crenata, and larval Stenelmis were studied in Polecat and Riley Creeks, Coles County, Illinois. Rock Scrapings were taken and compared with the gut analyses of the larval and adult beetles. These beetles were found to be scraper/collectors and detritivore/herbivores, generally scraping surfaces of rocks. Detritus, green algae, and diatoms were found to be the major categories present in both the rock scrapings and the gut analyses. The cellular contents of diatoms (chloroplasts and other cytoplasmic inclusions) were digested by the beetles. No conclusions regarding feeding preferences are made, …