A Contribution to the Life History of the Swordfish, Xiphias Gladius Linnaeus, from the South Atlantic Coast of the United States and the Gulf of Mexico
Thirty three postlarval specimens of swordfish, Xiphias gladius Linn., from the South Atlantic coast of the United States and the Gulf of Mexico, ranging in standard length from 6.1 mm to 192.1 mm are discussed. Nine specimens are illustrated and fourteen detailed descriptions are given, bringing together developmental characters for the range presented. Ten adults from Cuba and four from Canada are used to establish characteristic adult body proportions. The range of adult fish is given and the occurrence of females with varying stages of ovaries is mentioned. A hypothesis on the spawning time and area for the region concerned is given as taking place from the lower Caribbean to the South Carolina coast, probably year round, with the height of the season in Florida and Georgia waters from April through September. The stomach contents of 27 larval specimens are analyzed, and temperature, salinity and oxygen concentrations are given for stations occupied along the approximate axis of the Gulf Stream.
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Document Type: Research Article
Publication date: 01 January 1954
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