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Genetic Studies to Determine Stock Structure....
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GRANT NUMBER:  NA57FD0069          NMFS NUMBER:  93-SER-002

REPORT TITLE:  Genetic Studies to Determine Stock Structure of Greater Amberjack in the Gulf of Mexico and Southeastern (U.S) Atlantic Ocean

AUTHOR:  Gold, Dr. John R.

PUBLISH DATE: December 12, 1997

AVAILABLE FROM:  National Marine Fisheries Service, 9721 Executive Center Drive, North Koger Building, St. Petersburg, FL 33702.  PHONE: (813) 570-5324

ABSTRACT

Appropriate tissues were obtained between 1994 and 1996 from 444 greater amberjack (Seriola dummerili) sampled from 11 offshore localities in the northern Gulf of Mexico (Gulf) and along the U.S. southeast Atlantic coast (Atlantic).  Restriction sites of mitochondrial (mt) DNA from each individual were surveyed by using a battery of 16 type-II restriction enzymes. A total of 49 mtDNA haplotypes (genotypes) were detected. Percent nucleotide-sequence divergence among the haplotypes ranged from 0.156 to 2.623 (mean + S.E.=0.980+ 0.015).  Nucleon diversity within samples ranged from 0.845 to 0.906, and intrapopulational mtDNA diversities ranged (mean+ S.D.) from 0.483+0.370 to 0.619+ 0.419.   The latter did not differ significantly from one another.

 
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