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A Genetic-Analysis Of Weakfish Cynoscion-Regalis Stock Structure Along The Mid-Atlantic Coast, John Graves, Jan Mcdowell, M. Lisa Jones
A Genetic-Analysis Of Weakfish Cynoscion-Regalis Stock Structure Along The Mid-Atlantic Coast, John Graves, Jan Mcdowell, M. Lisa Jones
VIMS Articles
To investigate the genetic basis of stock structure of the weakfish Cynoscion regalis, a total of 370 individuals was collected from four geographic sites along the mid-Atlantic coast of the United States over a period of 4 years. Restriction fragment length polymorphism (RFLP) analysis of weakfish mitochondrial DNA, employing either 6 or 13 restriction endonucleases, demonstrated a low level of intraspecific mtDNA variation, with a mean nucleotide sequence divergence of 0.13% for the pooled samples. The common mtDNA genotype occurred at a frequency of 0.91-0.96 in all samples, and no significant heterogeneity was found among samples in the occurrence of …