Wednesday, 20 November 2002
D0596

This presentation is part of : Display Presentations, Subsection Cd. Behavior and Ecology

Preliminary investigations of the influence of selected sediment physical characteristics on two different larval distribution patterns of the nuisance midge Glyptotendipes paripes (Diptera: Chironomidae) in central Florida lakes

Richard J. Lobinske, Arshad Ali, and Robert J. Leckel Jr. University of Florida, Mid-Florida Research and Education Center, 2725 Binion Road, Apopka, FL

Larval distributions of the nuisance midge Glyptotendipes paripes in three central Florida lakes occurred in two patterns, predominately on lake periphery firm sediments (type 1), or primarily on soft organic sediments at lake center (type 2). Larval distributions were investigated in relation to sediment dry weight, particle size distribution and physical composition (muck, sand , frass, clay, or detritus). In agreement with previous results, the soft organic sediments in the type 2 lake had large to predominant amounts of chironomid frass while frass was very limited or absent from the soft organic sediments of type 1 lakes.

Species 1: Diptera Chironomidae Glyptotendipes paripes
Keywords: Chironomidae, sediment/fauna relationships

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