title: Tide-associated biological rhythms of some White Sea littoral invertebrates.
abstract: We report the results from two years of laboratory observations of the tide-associated rhythms of activity of White Sea intertidal invertebrates, Mya arenaria (Bivalvia) and Gammarus finmarchicus (Amphipoda). The tidal associated activity of these invertebrates could not be estimate as a clear circatidal clock. Gammarus activity could be phase shifted by a 0.5 h exposure to turbulent water twice a day for 2-3 days. Mya's rhythm could be changed by a single drainage of aquariums lasting about 15 min. This kind of timing system may be a relatively primitive evolution feature.
authors.affiliation: Zoology of Invertebrates Dept., Kazan State University, 420008, 18, Kremlevskaya str., Kazan, Russia.
authors.forename: O A
authors.initials: OA
authors.lastname: Gusev
authors.forename: A I
authors.initials: AI
authors.lastname: Golubev
mesh_terms: D000204:Activity Cycles / Q000502:physiology*; D000818:Animals; D049872:Bivalvia / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology*; D003445:Crustacea / Q000502:physiology*; D016081:Moon; D009043:Motor Activity / Q000502:physiology; D009792:Oceans and Seas; D010507:Periodicity; D012426:Russia; D012623:Seawater; D014872:Water Movements