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Importance of Food Supply to Nutritional State of Larval Striped Bass in the Potomac River Estuary
Author(s) -
Martin F. Douglas,
Wright David A.,
Means Jay C.,
SetzlerHamilton Eileen M.
Publication year - 1985
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1985)114<137:iofstn>2.0.co;2
Subject(s) - estuary , bass (fish) , fishery , larva , food supply , environmental science , biology , ecology , agricultural science
Surveys of larval striped bass Morone saxatilis and zooplankton in the Potomac River upper estuary were made in 1981. In addition to distribution and abundance, nutritional state of larvae was assessed by morphometric, histologic, and two biochemical techniques: RNA:DNA ratio and fatty acid composition and concentration. All four techniques gave evidence of poor nutritional state early in the season but not later. Analyses of distribution indicated a significant correlation among nutritional indices and copepod and cladoceran densities.