Tidal vertical migration: an endogenous rhythm in estuarine crab larvae.
Field-caught larvae of the estuarine crab Rhithropanopeus harrisii have a tidal rhythm of vertical migration when maintained in constant conditions. Laboratory-reared larvae do not show this rhythm. Endogenous tidal vertical migrations aid the retention of these planktonic larvae in estuaries near the parent populations.
Cronin
T W
TW
Forward
R B
RB