A bio-oceanographic filter to larval dispersal in a reef-building coral

Iliana B. Baums, Claire B Paris-Limouzy, Laurent M. Chérubin

Research output: Contribution to journalArticle

137 Citations (Scopus)

Abstract

Gene flow was shown to be limited between western and eastern Caribbean populations of the reef-building coral, Acropora palmata. However, some mixing was detected among populations near Puerto Rico. Our genetic analyses categorize A. palmata samples from the east coast of the Dominican Republic with the western Caribbean population, suggesting a filter to gene flow east of the Dominican Republic. To test the hypothesis of a present day bio-oceanographic filter occurring between Puerto Rico and the Dominican Republic (i.e., in the Mona Passage), we used a Lagrangian stochastic model (LSM) of larval dispersal, coupling coral life history characteristics with physical forcing. The model operated at two spatial scales: Caribbean-wide and focusing on the Mona Passage area. Results from the Caribbean-wide study showed no significant virtual larval exchange between the two populations. The small-scale model indicated that virtual larvae do not readily traverse the Mona Passage during the corals' reproductive season. Larvae released from Mona Island, in the center of the passage, are retained in the lee within topographically steered eddies, which act, together with the larval competency period, as a de facto filter to dispersal. Combined, our findings reveal the location of a seasonal filter to gene flow and its mechanism.

Original languageEnglish (US)
Pages (from-to)1969-1981
Number of pages13
JournalLimnology and Oceanography
Volume51
Issue number5
StatePublished - Sep 2006

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Dominican Republic
corals
reefs
coral
reef
gene flow
filter
Puerto Rico
larva
larvae
breeding season
eddy
life history
coasts
coast
testing
sampling
Acropora palmata

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

Cite this

A bio-oceanographic filter to larval dispersal in a reef-building coral. / Baums, Iliana B.; Paris-Limouzy, Claire B; Chérubin, Laurent M.

In: Limnology and Oceanography, Vol. 51, No. 5, 09.2006, p. 1969-1981.

Research output: Contribution to journalArticle

Baums, Iliana B. ; Paris-Limouzy, Claire B ; Chérubin, Laurent M. / A bio-oceanographic filter to larval dispersal in a reef-building coral. In: Limnology and Oceanography. 2006 ; Vol. 51, No. 5. pp. 1969-1981.
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