Fine-scale analysis of genetic structure in the brooding coral Seriatopora hystrix from the Red Sea

E. Maier, R. Tollrian, B. Nürnberger

Research output: Contribution to journalArticlepeer-review

Abstract

The dispersal of gametes and larvae plays a key role in the population dynamics of sessile marine invertebrates. Species with internal fertilisation are often associated with very localised larval dispersal, which may cause small-scale patterns of neutral genetic variation. This study on the brooding coral Seriatopora hystrix from the Red Sea focused on the smallest possible scale: Two S. hystrix stands (~100 colonies each) near Dahab were completely sampled, mapped and analysed at five microsatellite markers. The sexual mode of reproduction, the likely occurrence of selfing and the level of immigration were in agreement with previous studies on this species. Contrary to previous findings, both stands were in Hardy-Weinberg proportions. Also, no evidence for spatially restricted larval dispersal within the sampled areas was found. Differences between this and previous studies on S. hystrix could reflect variation in life history or varying environmental conditions, which opens intriguing questions for future research.
Original languageEnglish
Pages (from-to)751-756
Number of pages6
JournalCoral Reefs
Volume28
Issue number3
Early online date12 Apr 2009
DOIs
Publication statusPublished - Sep 2009

Keywords

  • Assignment tests
  • Coral
  • Larval dispersal
  • Microsatellite
  • Selfing
  • Seriatopora hystrix

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