Cited by 231Coral and Marine Ecosystems StudiesGenetic diversity and population structureMarine Invertebrate Physiology and Ecology

Multiple scales of genetic connectivity in a brooding coral on isolated reefs following catastrophic bleaching

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UNDERWOOD, J. N., SMITH, L. D., VAN OPPEN, M. J. H., GILMOUR, J. P.·2007·Molecular Ecology

Abstract

Understanding the pattern of connectivity among populations is crucial for the development of realistic and spatially explicit population models in marine systems. Here we analysed variation at eight microsatellite loci to assess the genetic structure and to infer patterns of larval dispersal for a brooding coral, Seriatopora hystrix , at an isolated system of reefs in northern Western Australia. Spatial autocorrelation analyses show that populations are locally subdivided, and that the majority of larvae recruit to within 100 m of their natal colony. Further, a combination of F ‐ and R ‐ statistics showed significant differentiation at larger spatial scales (2–60 km) between sites, and this pattern was clearly not associated with distance. However, Bayesian analysis demonstrated that recruitment has been supplemented by less frequent but recent input of larvae from outside the local area; 2–6% of colonies were excluded from the site at which they were sampled. Individual assignments of these migrants to the most likely populations suggest that the majority of migrants were produced at the only site that was not decimated by a recent and catastrophic coral bleaching event. Furthermore, the only site that recovered to prebleaching levels received most of these immigrants. We conclude that the genetic structure of this brooding coral reflects its highly opportunistic life history, in which prolific, philopatric recruitment is occasionally supplemented by exogenously produced larvae.

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  1. Marquez LM, van Oppen MJH, Willis BL, Miller DJ (2002) Sympatric populations of the highly cross-fertile coral species Acropora hyacinthus and Acropora cytherea are genetically distinct. Proceedings of the Royal Society of London, 269, 1289 -1294.
  2. McCauley DE (1993) Evolution in metapopulations with frequent local extinction and recolonization. In: Oxford Surveys in Evolu- tionary Biology, 9 (eds Harvey PH, Partridge L), pp. 109 -133. Oxford University Press, USA.
  3. Smith L, Gilmour J, Heyward A, Rees M (2006) System wide decline in coral cover and recruitment following a catastrophic bleaching at isolated reefs. Proceedings of the 10th International Coral Reef Symposium, 2, 651-656.

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Authors
UNDERWOOD, J. N., SMITH, L. D., VAN OPPEN, M. J. H., & GILMOUR, J. P.
Affiliations
Australian Institute of Marine Science (AU)
Corresponding author
UNDERWOOD, J. N.
Venue
Molecular Ecology
Publisher
Wiley
Published
2007-02
Volume
16
Issue
4
Pages
771-784
ISSN
  • 0962-1083 (ISSN-L)
  • 1365-294X
OpenAlex
W2166534928
Cited by
231
References
61
Citations by year
2026: 3 · 2025: 4 · 2024: 7 · 2023: 13 · 2022: 4 · 2021: 5 · 2020: 6 · 2019: 10 · 2018: 7 · 2017: 15 · 2016: 16 · 2015: 24 · 2014: 11 · 2013: 19 · 2012: 13
FWCI
10.01
Type
journal article
Language
en
Open access
Locations
  • Molecular Ecology (publishedVersion)
  • PubMed (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
Topics
  • Physical Sciences › Environmental Science › Ecology › Coral and Marine Ecosystems Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
Keywords
genetic connectivity, larval dispersal, Seriatopora hystrix, brooding corals, coral bleaching, population structure, microsatellite markers, spatial autocorrelation, recruitment (biology), philopatry, genetic differentiation, coral reef recovery, Western Australia
MeSH terms
Animals, Bayes Theorem, Demography, Disasters, Gene Frequency, Genetics, Population, Geography, Models, Genetic, Population Dynamics, Genetic Variation, Western Australia, Microsatellite Repeats, Indian Ocean, Anthozoa

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