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Genetic structure and connectivity patterns of two Caribbean rocky-intertidal gastropods

Publication ,  Journal Article
Díaz-Ferguson, E; Haney, RA; Wares, JP; Silliman, BR
Published in: Journal of Molluscan Studies
February 1, 2012

The extent of gene flow in Caribbean marine communities has been investigated primarily in taxa from coral reef habitats, particularly in corals and reef fishes. Results from empirical population genetic studies in those taxa have indicated the presence of an eastwest genetic break between 67° and 70°W longitude, and isolation of populations in the Bahamas. Hydrodynamic modelling has further suggested the presence of four connectivity regions that may contribute to genetic isolation. In this study we test for the presence of genetic structure in two gastropods (Cenchritis muricatus and Echinolittorina ziczac) from poorly sampled rocky-intertidal habitats, using mitochondrial sequence data. Significant genetic structure was found in C. muricatus (S nn= 0.29, P< 0.001; F st= 0.022, P< 0.001), but not in E. ziczac (S nn= 0.17, P 0.48; F st= 0.022, P= 0.48), in spite of similar larval life histories. The pattern of differentiation does not match a simple eastwest model in either species, nor a four-region model, nor do the Bahamas show evidence of isolation. However, the genetic differentiation of Bonaire from other sites that is observed in C. muricatus and E. ziczac is consistent with the previously observed isolation of this location in the trochid gastropod Cittarium pica. © 2011 The Author.

Duke Scholars

Published In

Journal of Molluscan Studies

DOI

EISSN

1464-3766

ISSN

0260-1230

Publication Date

February 1, 2012

Volume

78

Issue

1

Start / End Page

112 / 118

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 3109 Zoology
  • 0608 Zoology
 

Citation

APA
Chicago
ICMJE
MLA
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Díaz-Ferguson, E., Haney, R. A., Wares, J. P., & Silliman, B. R. (2012). Genetic structure and connectivity patterns of two Caribbean rocky-intertidal gastropods. Journal of Molluscan Studies, 78(1), 112–118. https://doi.org/10.1093/mollus/eyr050
Díaz-Ferguson, E., R. A. Haney, J. P. Wares, and B. R. Silliman. “Genetic structure and connectivity patterns of two Caribbean rocky-intertidal gastropods.” Journal of Molluscan Studies 78, no. 1 (February 1, 2012): 112–18. https://doi.org/10.1093/mollus/eyr050.
Díaz-Ferguson E, Haney RA, Wares JP, Silliman BR. Genetic structure and connectivity patterns of two Caribbean rocky-intertidal gastropods. Journal of Molluscan Studies. 2012 Feb 1;78(1):112–8.
Díaz-Ferguson, E., et al. “Genetic structure and connectivity patterns of two Caribbean rocky-intertidal gastropods.” Journal of Molluscan Studies, vol. 78, no. 1, Feb. 2012, pp. 112–18. Scopus, doi:10.1093/mollus/eyr050.
Díaz-Ferguson E, Haney RA, Wares JP, Silliman BR. Genetic structure and connectivity patterns of two Caribbean rocky-intertidal gastropods. Journal of Molluscan Studies. 2012 Feb 1;78(1):112–118.
Journal cover image

Published In

Journal of Molluscan Studies

DOI

EISSN

1464-3766

ISSN

0260-1230

Publication Date

February 1, 2012

Volume

78

Issue

1

Start / End Page

112 / 118

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 3109 Zoology
  • 0608 Zoology