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Sexually immature, adult river lamprey Lampetra fluviatilis in the upstream migratory phase, were shown to be attracted to water conditioned with ammocoete larvae when tested using a two‐choice flume. Although preliminary, the data suggest that migrating adult river lamprey may be attracted to larval putative pheromone as recorded in sea lamprey Petromyzon marinus.
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Gaudron et al. (2006) studied this question.
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