Selective tidal stream transport is a mechanism by which aquatic animals can assist their horizontal migration by actively changing their vertical position in the water column, timed to coincide with tidal currents flowing in a preferred direction.
When flatfishes use selective tidal stream transport, the timing of vertical excursions away from the bottom can be combined with predictions of tidal current velocity to construct hypothetical migration trajectories (Arnold and Holford, 1995).
Here, we examine depth and time data from archival tags attached to two northern rock sole to determine whether vertical excursions are related to diel and tidal influences, and whether a simple model of selective tidal stream transport can be used to construct a hypothetical horizontal migration path that is consistent with the observed tag release and recovery locations
To determine if the selective use of tidal currents by northern rock sole was an important component of their seasonal horizontal migrations, we developed a selective tidal stream transport model similar in its basic design to that discussed in Arnold and Holford (1995).
Because the northern fish inhabited the central part of the eastern Bering Sea continental shelf, opportunities for selective tidal stream transport were available in all directions, thus enabling a round-trip migration.
Thus, similar to selective tidal stream transport whereby larvae use predictable tidal flows to either remain in estuaries or enter estuaries (Forward and Tankersley, 2001), general features in circulation may exist across physical oceanographic systems that allow larvae to influence their cross-shelf transport through basic changes in their vertical distribution.
Statistical methods for analysis of plankton and nekton distribution, with application to selective tidal stream transport of juvenile American eels (Anguilla rostrata).
Selective tidal stream transport of North Sea plaice larvae Pleuronectes platessa in coastal nursery areas.