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Characteristics of Spawning Areas of Shad, Alosa Sapidissima (Wilson) in some Virginia Streams
Author(s) -
Massmann William H.
Publication year - 1952
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(1951)81[78:cosaos]2.0.co;2
Subject(s) - alosa , fishery , streams , plankton , abundance (ecology) , salinity , environmental science , biology , geography , fish <actinopterygii> , ecology , fish migration , computer network , computer science
In 1949 and 1950, a study of shad spawning areas by collecting eggs in plankton nets was undertaken in six Virginia rivers. The areas of maximum spawning were located in three rivers; some evidence of shad spawning was obtained in the others. The investigation included studies of environmental factors, including bottom topography, tidal currents, salinity, turbidity, and temperature. The time of spawning is described and the apparent natural mortality of eggs reported. The value of egg collections in providing information on time, location, and abundance of eggs is discussed.