Premium
Hypervariable DNA Markers Reveal High Genetic Variability within Striped Bass Populations of the Lower Chesapeake Bay
Author(s) -
Laughlin Thomas F.,
Turner Bruce J.
Publication year - 1996
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(1996)125<0049:hdmrhg>2.3.co;2
Subject(s) - biology , chesapeake bay , bass (fish) , genetic variation , morone saxatilis , gene flow , evolutionary biology , population , genetic variability , genetic structure , zoology , genetics , ecology , genotype , estuary , gene , demography , sociology
We used a survey of hypervariable, variable number of tandem repeat (VNTR) loci to detect nuclear genetic differentiation within and among populations of striped bass Morone saxatilis in the lower Chesapeake Bay. This species has been refractory to population genetic analysis because it is depauperate in genetic variability. Previously described morphological differences and possible physiographic barriers to gene flow suggest the potential for differentiation among lower bay populations. In this study, we found considerable interindividual variation but relatively small levels of interpopulation variation among samples from the lower western shore of the Chesapeake Bay. The results suggest that stochastic genetic differentiation among these populations is unlikely and that relatively strong selection for locally adapted genotypes would be required for interpopulation differentiation to occur.