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Table 30. Summary of Hudson-Raritan Estuary black sea bass diet by sampling period during 1996-97, expressed as the percent frequency of occurrence of dominant prey or items (FO), and as the mean percent contribution of dominant prey or items to total stomach content volume (TV). (n = sample size; ES = percent of empty stomachs.)

Prey
Sampling Period
Jul 96
(n = 1; ES = 0)
Oct 96
(n = 3; ES = 0)
Jan 97
(n = 0; ES = N/A)
Apr 97
(n = 3; ES = 33)
Aug 97
(n = 46; ES = 11)
Nov 97
(n = 2; ES = 0)
FO
TV
FO
TV
FO
TV
FO
TV
FO
TV
FO
TV
Crangon septemspinosa 100.0 100.0 66.7 50.0 - - 0.0 0.0 43.5 24.0 0.0 0.0
Neomysis americana 0.0 0.0 0.0 0.0 - - 33.3 50.0 26.1 13.9 50.0 12.5
Juvenile Atlantic rock crab 0.0 0.0 33.3 2.9 - - 0.0 0.0 17.4 16.8 0.0 0.0
Unidentified crustaceans 0.0 0.0 0.0 0.0 - - 33.3 50.0 4.3 3.2 0.0 0.0
Corophium sp. 0.0 0.0 33.3 47.1 - - 0.0 0.0 2.2 0.1 50.0 12.5
Xanthid crabs 0.0 0.0 0.0 0.0 - - 0.0 0.0 8.7 10.3 0.0 0.0
Ampelisca abdita 0.0 0.0 0.0 0.0 - - 0.0 0.0 15.2 1.0 0.0 0.0
Juvenile Atlantic menhaden 0.0 0.0 0.0 0.0 - - 0.0 0.0 0.0 0.0 50.0 75.0
Unidentified organic matter 0.0 0.0 0.0 0.0 - - 0.0 0.0 21.7 3.5 0.0 0.0

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(Modified Jun. 13 2008)