Episymbionts as possible anti-fouling agents on reef-building hydrozoans

Z. Pasternak, A. Rix, A. Abelson

Research output: Contribution to journalArticlepeer-review


The barnacle Savignium milleporum is an obligatory symbiotic epizoan of the reef-building hydrozoan Millepora dichotoma, inhabiting virtually every M. dichotoma colony in Eilat, in which it carries out complex trophic interactions with its host. In the present study, barnacle-removal experiments were conducted on hydrozoan colonies in the laboratory and in the field, and subsequent algal cover was observed. The results show that de-barnacled colonies experience a dramatic increase in fouling by various algae and fungi. It is suggested that barnacles provide the host with a defense against fouling organisms through feeding on spores, capsules, and larvae of potential settlers.

Original languageEnglish
Pages (from-to)318-319
Number of pages2
JournalCoral Reefs
Issue number3
StatePublished - 2001


  • Barnacles
  • Coral reefs
  • Millepora
  • Symbionts


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