Hydrodynamic Interaction Between Olfactory Antennae and Odor Plumes.
1997
Koehl, Mimi A.
We have been studying the hydrodynamic performance of olfactory appendages of marine animals, both to elucidate how they filter chemical cues from the environment, and to gain insights for the design of man-made chemical sensors. The interaction of an appendage with ambient odor plumes and the small-scale velocity field near the appendage's surface determines the rates and locations at which molecules are encountered. Our objectives are to determine how the flow microenvironments and odorant encounter of these appendages are affected by (1) the presence and arrangement of sensory hairs, and (2) the flicking of the appendages in realistic odor plumes. During year one of this grant we have undertaken morphometric and kinematic analysis of olfactory antennules of stomatopods, completed such an analysis for lobsters, conducted experiments with dynamically- scaled physical models of lobster antennules to determine the effects of speed and orientation of flow near sensory hairs, and begun measuring water flow and mass transport in the habitats of nudibranchs whose olfactory rhinophores we are studying.
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