| Autor: |
DUNNING, DENNIS J., WALDMAN, JOHN R., ROSS, QUENTIN E., MATTSON, MARK T. |
| Zdroj: |
Transactions of the American Fisheries Society; Sep1997, Vol. 126 Issue 5, p857-861, 5p |
| Abstrakt: |
Striped bass Morone saxatilis and Atlantic tomcod Microgadus tomcod are common in the lower Hudson River estuary during winter. However, there is no information on the consumption of Atlantic tomcod or other prey by striped bass at that time in the lower Hudson River estuary. Striped bass are known to feed on Atlantic tomcod in the Hudson River during seasons other than winter. From 1986 through 1994, the stomach contents of 1,580 striped bass caught in the lower Hudson River estuary at water temperatures below 10°C were examined to determine the presence of fish and invertebrates. Of those, 47% contained food. No Atlantic tomcod were found in any of the striped bass stomachs despite the fact that 74% of the catches from the 5,826 tows we examined contained both Atlantic tomcod and striped bass and that the Atlantic tomcod appeared to be a suitable-size prey for the striped bass. The proportion of stomachs having invertebrates declined with increasing length of striped bass and the proportion of stomachs having fish increased with length of striped bass. During the winter 1991-1992, when stomach contents were classified to the lowest taxonomic level, striped bass fed primarily on amphipods. Crangon spp., and juvenile alosids. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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