Abstract
ior downstream from the odor source (2) but then lost the odor plume upstream in the jet field. These results suggest that successfully tracking lobsters use similar walking paths independent of signal intermittency. Counter-turning or casting behavior as described for moths (4) was rarely observed. However, tracking success dropped with increasingly intermittent signal conditions. It appears that lobsters require a minimal signal encounter rate to continue tracking the plume successfully to the source. The fact that lobsters stayed mostly within the odor plume boundaries further suggests that they use its internal fine structure for guidance. First and second authors are listed alphabetically; both authors contributed to the experiment equally and in the same manner. r downstream from the odor s urce (2) but then los the odor lume upstream in the jet field. This study was supported by NSF REU Grant (OCE-0097498) to CK and KY, and ONR Grant (N00014-981-0822) to JA.
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