Aquatic Sciences Meeting, Albuquerque 2001

PC08 New Techniques and Technologies from Single Cells to the Global Ocean

Date: Wednesday, February 14, 2001

Location: Southwest Hall

Davis, E, C, University of Kansas, Lawrence, USA, bethd@ukans.edu

Loudon, C, , University of Kansas, Lawrence, USA, loudon@ukans.edu

USING FLOW VISUALIZATION TO CHARACTERIZE SPATIAL DISTORTIONS OF CHEMICAL SIGNALS IN DIVERGING FLOWS

Many investigators have demonstrated that spatial heterogeneity of chemical signals in the fluid environment is potentially informative to organisms. Diverging and decelerating flow can occur as fluid approaches and partially passes through gaps in a sensory structure (such as an arthropod antenna). This diverging flow is expected to distort the spatial arrangement of the chemical signal molecules contained in the fluid. In order to characterize these distortions, a flow visualization technique was used that marks the fluid at an anode placed in a pH-indicating solution (aqueous thymol blue). Small samples of fluid marked by this method were videotaped as they moved through a diverging chamber at low Reynolds numbers.

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Aquatic Sciences Meeting, Albuquerque 2001

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