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A multi-locus assessment of connectivity and historical demography in the bluehead wrasse (Thalassoma bifasciatum).

Publication ,  Journal Article
Haney, RA; Silliman, BR; Rand, DM
Published in: Heredity
May 2007

The pelagic larval stage of most coral reef fishes might allow extensive dispersal or, alternatively, some level of local recruitment might be important. Molecular markers can be used to obtain indirect estimates of dispersal to evaluate these alternatives, yet the extent of gene flow among populations is known for only a small number of species. The use of such markers must take into account the properties of the markers and the demographic history of the population when making inferences about current gene flow. In the Caribbean bluehead wrasse, Thalassoma bifasciatum, previous studies have found both substantial levels of local recruitment, in studies interpreting otolith microchemistry and, conversely, a lack of genetic differentiation inferred from mitochondrial DNA (mtDNA) restriction-fragment length polymorphism (RFLP) data and allozymes. However, if subtle differentiation exists, larger sample sizes and highly variable markers may be required to discern it. Here we present results from mitochondrial control region sequence and microsatellite data that indicate a lack of genetic differentiation at both small and large spatial scales. However, historical processes, such as changes in population size, may have affected the current distribution of genetic variation.

Duke Scholars

Published In

Heredity

DOI

EISSN

1365-2540

ISSN

0018-067X

Publication Date

May 2007

Volume

98

Issue

5

Start / End Page

294 / 302

Related Subject Headings

  • Sequence Analysis, DNA
  • Population Dynamics
  • Polymorphism, Restriction Fragment Length
  • Polymorphism, Genetic
  • Polymerase Chain Reaction
  • Perciformes
  • Microsatellite Repeats
  • Larva
  • Geography
  • Genotype
 

Citation

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Haney, R. A., Silliman, B. R., & Rand, D. M. (2007). A multi-locus assessment of connectivity and historical demography in the bluehead wrasse (Thalassoma bifasciatum). Heredity, 98(5), 294–302. https://doi.org/10.1038/sj.hdy.6800940
Haney, R. A., B. R. Silliman, and D. M. Rand. “A multi-locus assessment of connectivity and historical demography in the bluehead wrasse (Thalassoma bifasciatum).Heredity 98, no. 5 (May 2007): 294–302. https://doi.org/10.1038/sj.hdy.6800940.
Haney, R. A., et al. “A multi-locus assessment of connectivity and historical demography in the bluehead wrasse (Thalassoma bifasciatum).Heredity, vol. 98, no. 5, May 2007, pp. 294–302. Epmc, doi:10.1038/sj.hdy.6800940.

Published In

Heredity

DOI

EISSN

1365-2540

ISSN

0018-067X

Publication Date

May 2007

Volume

98

Issue

5

Start / End Page

294 / 302

Related Subject Headings

  • Sequence Analysis, DNA
  • Population Dynamics
  • Polymorphism, Restriction Fragment Length
  • Polymorphism, Genetic
  • Polymerase Chain Reaction
  • Perciformes
  • Microsatellite Repeats
  • Larva
  • Geography
  • Genotype