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Reproductive Parameters Needed to Evaluate....
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GRANT NUMBER:  NA77FD0074           NMFS NUMBER: 96-SER-047

REPORT TITLE:  Reproductive Parameters Needed to Evaluate Recruitment Overfishing of Spotted Sea Trout in the Southeastern U.S.

AUTHOR: Lowerre-Barbieri, Susan K.; and Barbieri, Luiz R. R.

PUBLISH DATE:  March 29, 1999

AVAILABLE FROM:  National Marine Fisheries Service, Southeast Region, 9721 Executive Center Drive, St Petersburg, FL 33702.  TELEPHONE:   (813) 570-5324

ABSTRACT

The study was conducted to provide detailed reproductive information on spotted sea trout. The research determined that spotted sea trout spawning begins at dusk and it took place from late April through mid-September in 1997. Most spawning occurred from June through August. It was found that spotted sea trout mature at age one at a small size (228 mm-240 mm total length) and that 94% of the reproductively active females were age one. Batch fecundity ranged from 55,640 to 417,394 eggs/female and significantly increase with fish size. Spawning frequency estimates ranged from once every 2-3 days to once every 6-7 days leading to an average annual fecundity of 3.6 to 8.5 million eggs/female.

 
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