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Table 18. Summary of Hudson-Raritan Estuary striped searobin 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 = 26;
ES = 4)
Oct 96
(n = 39;
ES = 11)
Jan 97
(n = 0;
ES = N/A)
Apr 97
(n = 5;
ES = 40)
Aug 97
(n = 81;
ES = 5)
Nov 97
(n = 2;
ES = 0)
FO
TV
FO
TV
FO
TV
FO
TV
FO
TV
FO
TV
Crangon septemspinosa 96.2 56.2 74.4 42.3 - - 60.0 71.1 75.3 37.4 50.0 71.4
Neomysis americana 23.1 12.8 25.6 9.5 - - 0.0 0.0 37.0 10.2 0.0 0.0
Unidentified organic matter 0.0 0.0 15.4 8.6 - - 0.0 0.0 6.2 0.7 0.0 0.0
Juvenile Atlantic rock crab 3.8 2.7 7.7 9.0 - - 0.0 0.0 11.1 9.7 0.0 0.0
Coal pebbles 3.8 0.7 2.6 <0.1 - - 0.0 0.0 4.9 1.6 0.0 0.0
Juvenile Ovalipes ocellatus 0.0 0.0 5.1 8.1 - - 0.0 0.0 9.9 5.4 0.0 0.0
Unidentified juvenile fish 3.8 7.7 2.6 0.9 - - 0.0 0.0 11.1 5.8 0.0 0.0
Juvenile striped searobin 0.0 0.0 0.0 0.0 - - 0.0 0.0 7.4 8.8 0.0 0.0
Ampelisca abdita 7.7 1.3 0.0 0.0 - - 0.0 0.0 2.4 0.1 0.0 0.0
Gammarus lawrencianus 3.8 0.7 15.4 7.4 - - 0.0 0.0 0.0 0.0 0.0 0.0

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(Modified Jun. 13 2008)