Day and Night Distributions of Juvenile Fishes in the Nearshore Region of the Upper Chesapeake Bay

摘要

Paired day and night series of otter trawls taken during 1975-76 in the nearshore region of Still Pond Neck in the Upper Chesapeake Bay indicated significant diel differences in both abundance and distribution of juvenile fishes within the sampling area. Diel differences in catch abundances were highly variable; however, night catches tended to be greater than day catches. Five of the six abundant species (Atlantic menhaden, spot, white perch, hogchoker and Atlantic croaker) exhibited an opposite pattern of onshore distribution during the day and offshore distribution at night.