, Volume 759, Issue 1, pp 85–93 | Cite as

Occurrence and survivorship of azooxanthellate octocorals reflect recruitment preferences and depth distribution

  • Michal Grossowicz
  • Yehuda BenayahuEmail author


Like many other environmental factors, light limits the distribution of hermatypic corals along depth. Octocorals, accordingly, respond to light intensity, featuring a depth-related distribution. Among others, competition for space, resources, and settlement processes may determine their distribution. The azooxanthellate octocoral Dendronephthya sinaiensis inhabits flow-exposed vertical habitats such as reef slopes. The current study engages with its distributional patterns on both the southern and northern faces of the vertical pillars of the oil jetties at Eilat (northern Red Sea). It examines the possible role of light intensity and competition in determining its spatial distribution during recruitment processes. The distribution of D. sinaiensis along depth (14–32 m) was studied and light intensity was measured at both the light-exposed and shaded faces. The colonies were found mostly on the shaded faces, suggesting that D. sinaiensis might be adapted to low-light intensity, where zooxanthellate corals may be more restricted. Translocation of D. sinaiensis fragments from deep-to-shallow waters to either lit or shaded faces revealed their survival on the shaded faces, where they do not naturally occur, whereas they did not survive on the lit ones. This finding suggests a preference for deep water, which may reduce competition with zooxanthellate species. The occurrence of D. sinaiensis thus appears to be determined by both a selective preference to inhabit deep water and, at least partially, by light intensity.


Octocorals Depth distribution Translocation Light intensity Red Sea 



We thank the Interuniversity Institute for Marine Sciences in Eilat (IUI) for the use of their facilities and assistance. We thank the Eilat-Ashqelon Pipeline Company (EAPC) for cooperation and the Israel Nature and National Parks Protection Authority for issuing the collection permit. We acknowledge A. Shlagman for curatorial help, N. Paz for editorial assistance, and V. Wexler for digital editing. The study was in part supported by the Israel Cohen Chair in Environmental Zoology (Y. B.) and a grant from The Porter School of Environmental Studies (PSES) at Tel Aviv University. The article constitutes part of a MSc thesis in Ecology and Environmental Quality at Tel-Aviv University submitted by M. Grossowicz.


  1. Ammar, M. S. A., 2009. Coral reef restoration and artificial reef management, future and economic. Open Environmental Engineering Journal 2: 37–49.CrossRefGoogle Scholar
  2. Babcock, R. & P. Davies, 1991. Effects of sedimentation on settlement of Acropora millepora. Coral Reefs 9: 205–208.CrossRefGoogle Scholar
  3. Baird, A. H., R. C. Babcock & C. P. Mundy, 2003. Habitat selection by larvae influences the depth distribution of six common coral species. Marine Ecology Progress Series 252: 289–293.CrossRefGoogle Scholar
  4. Barki, Y., 1992. Population ecology and genetic characteristics of the soft coral Dendronephthya in the northern Gulf of Eilat, Red Sea. M. Sc. Thesis, Tel-Aviv University, Israel (Hebrew, 79 p; English summary).Google Scholar
  5. Bassim, K. & P. Sammarco, 2003. Effects of temperature and ammonium on larval development and survivorship in a scleractinian coral (Diploria strigosa). Marine Biology 142(2): 241–252.Google Scholar
  6. Benayahu, Y., 1985. Faunistic composition and patterns in the distribution of soft corals (Octocorallia, Alcyonacea) along the coral reefs of Sinai peninsula. Proceedings 5th International Coral Reefs Congress, Tahiti 6: 255–260.Google Scholar
  7. Benayahu, Y. & Y. Loya, 1977. Space partitioning by stony corals soft corals and benthic algae on coral reefs of northern Gulf of Eilat (Red-Sea). Helgoländer Wissenschaftliche Meeresuntersuchungen 30: 362–382.CrossRefGoogle Scholar
  8. Benayahu, Y. & Y. Loya, 1981. Competition for space among coral-reef sessile organisms at Eilat, Red-Sea. Bulletin of Marine Sciences 31: 514–522.Google Scholar
  9. Chanmethakul, T., H. Chansang & S. Watanasit, 2010. Soft coral (Cnidaria: Alcyonacea) distribution patterns in Thai waters. Zoological Studies 49(1): 72–84.Google Scholar
  10. Dahan, M. & Y. Benayahu, 1997a. Reproduction of Dendronephthya hemprichi (Cnidaria: Octocorallia): year-round spawning in an azooxanthellate soft coral. Marine Biology 129: 573–579.CrossRefGoogle Scholar
  11. Dahan, M. & Y. Benayahu, 1997b. Clonal propagation by the azooxanthellate octocoral Dendronephthya hemprichi. Coral Reef 16: 5–12.CrossRefGoogle Scholar
  12. Edmunds, P. J., J. F. Bruno & D. B. Carlon, 2004. Effects of depth and microhabitat on growth and survivorship of juvenile corals in the Florida Keys. Marine Ecology Progress Series 278: 115–124.CrossRefGoogle Scholar
  13. Ettinger-Epstein, P., S. Whalan, C. N. Battershill & R. de Nys, 2008. A hierarchy of settlement cues influences larval behavior in a coral reef sponge. Marine Ecology Progress Series 365: 103–113.CrossRefGoogle Scholar
  14. Fabricius, K., & P. Alderslade, 2001. Soft corals and sea fans: a comprehensive guide to the tropical shallow water genera of the central-west Pacific, the Indian Ocean and the Red Sea. Australian Institute of Marine Science and the Museum and Art Gallery of the Northern Territory.Google Scholar
  15. Fabricius, K. E., Y. Benayahu & A. Genin, 1995a. Herbivory in asymbiotic soft corals. Science 268: 90–92.CrossRefPubMedGoogle Scholar
  16. Fabricius, K. E., A. Genin & Y. Benayahu, 1995b. Flow-dependent herbivory and growth in zooxanthellae-free soft corals. Limnology and Oceanography 40: 1290–1301.CrossRefGoogle Scholar
  17. Gleason, D. F., P. J. Edmunds & R. D. Gates, 2005. Ultraviolet radiation effects on the behavior and recruitment of larvae from the reef coral Porites astreoides. Marine Biology. doi: 10.1007/s00227-005-0098-y.Google Scholar
  18. Gori, A., L. Bramanti, P. Lopez-Gonzalez, J. N. Thoma, J. M. Gili, J. Grinyo, V. Uceira & S. Rossi, 2012. Characterization of the zooxanthellate and azooxanthellate morphotypes of the Mediterranean gorgonian Eunicella singularis. Marine Biology 159: 1485–1496.CrossRefGoogle Scholar
  19. Grigg, R. W., 1977. Population dynamics of two gorgonian corals. Ecology 58: 278–290.CrossRefGoogle Scholar
  20. Grossowicz, M., 2008. Niche partitioning among three azooxanthellate soft coral species in Eilat (northern Red Sea). M. Sc. Thesis, Tel-Aviv University, Israel (Hebrew, 75 p; English summary).Google Scholar
  21. Grossowicz, M. & Y. Benayahu, 2012. Differential morphological features of two Dendronephthya soft coral species suggest differences in feeding niches. Marine Biodiversity 42: 65–72.CrossRefGoogle Scholar
  22. Hutchinson, G. E., 1958. Concluding remarks cold spring harbor symposium. Quantitative Biology 22: 415–427.CrossRefGoogle Scholar
  23. Jerlov, N. G., 1976. Marine Optics. Elsevier, Amsterdam: 231pp.Google Scholar
  24. Kahng, S. E., J. R. Garcia-Sais, H. L. Spalding, E. Brokovich, D. Wagner, E. Weil, L. Hinderstein & R. J. Toonen, 2010. Community ecology of mesophotic coral reef ecosystems. Coral Reefs 29: 255–275.CrossRefGoogle Scholar
  25. Kawaguti, S., 1941. On the physiology of reef corals. V. The tropisms of coral planulae, considered as a factor of distribution on the reef. Palao Tropical Biology Station Studies 2: 319–328.Google Scholar
  26. Krebs, C. J., 2001. Ecology: the experimental analysis of distribution and abundance. Benjamin Cummings, an imprint of Addison Wesley Longman Inc, San Francisco.Google Scholar
  27. Matterson, K., 2012. Microscale variation in light intensity and its effects on growth of juveniles of the temperate coral, Oculina Arbuscula. Electronic Theses and Dissertations. Georgia Southern University, Paper 14.Google Scholar
  28. Mullineaux, L. S., 1988. The role of settlement in structuring a hard-substratum community in the deep sea. Journal of Experimental Marine Biology and Ecology 120: 247–261.CrossRefGoogle Scholar
  29. Mundy, C. & R. C. Babcock, 2000. Are vertical distribution patterns of scleractinian corals maintained by pre- or post-settlement processes? A case of three contrasting species. Marine Ecology Progress Series 198: 109–119.CrossRefGoogle Scholar
  30. Perkol-Finkel, S. & Y. Benayahu, 2004. Community structure of stony and soft corals on vertical unplanned artificial reefs in Eilat (Red Sea): comparison to natural reefs. Coral Reefs 23: 195–205.CrossRefGoogle Scholar
  31. Perkol-Finkel, S. & Y. Benayahu, 2005. Recruitment of benthic organisms onto a planed artificial reef: shift in community structure one decade post-deployment. Marine Environmental Research 59: 79–99.CrossRefPubMedGoogle Scholar
  32. Perkol-Finkel, S. & Y. Benayahu, 2009. The role of differential survival patterns in shaping coral communities on neighboring artificial and natural reefs. Journal of Experimental Marine Biology and Ecology 369: 1–7.CrossRefGoogle Scholar
  33. Reinicke, G.B., 1997. Different modes of adaptation to light conditions in Red Sea Xeniidae reflected by their depth distribution patterns (Octocorallia, Alcyonacea) Proceeding of the 6th International Conference on Coelenterate Biology 1995: 393–402.Google Scholar
  34. Rilov, G. & Y. Benayahu, 1998. Vertical artificial structures as an alternative habitat for coral reef fishes in disturbed environments. Marine Environmental Research 45(4/5): 431–451.CrossRefGoogle Scholar
  35. Ritson-Williams, R., S. N. Arnold, N. D. Fogarty, R. S. Steneck, M. J. Vermeij & V. J. Paul, 2009. New perspectives on ecological mechanisms affecting coral recruitment on reefs. Smithsonian Contributions to the Marine Sciences 38: 437–457.CrossRefGoogle Scholar
  36. Rocha, R. J. M., J. Serôdio, M. Costa Leal, P. Cartaxana & R. Calado, 2013. Effect of light intensity on post-fragmentation photobiological performance of the soft coral Sinularia flexibilis. Aquaculture 388–391: 24–29.CrossRefGoogle Scholar
  37. Roth, M. S., T. Y. Fan & D. D. Deheyn, 2013. Life history changes in coral fluorescence and the effects of light intensity on larval physiology and settlement in Seriatopora hystrix. PLoS One 8(3): e59476. doi  10.1371/journal.pone.0059476 CrossRefPubMedCentralPubMedGoogle Scholar
  38. Sanchez, J. A., 1999. Black coral-octocoral distribution patterns on Imelda Bank, a deep-water reef, Colombia, Caribbean Sea. Bullatine of Marine Sciences 65(1): 215–225.Google Scholar
  39. Santangelo, G., L. Bramanti, S. Rossi, G. Tsounis, I. Vielmini, C. Lott & J. M. Gili, 2012. Patterns of variation in recruitment and post-recruitment processes of the Mediterranean precious gorgonian coral Corallium rubrum. Journal of Experimental Marine Biology and Ecology 411: 7–13.CrossRefGoogle Scholar
  40. Sheppard, C. R. C., 1980. Coral cover, zonation and diversity on reef slopes of Chagos Atolls, and population structures of major species. Marine Ecology Progress Series 2: 193–205.CrossRefGoogle Scholar
  41. Todd, C. D., 1998. Larval supply and recruitment of benthic invertebrates: do larvae always disperse as much as we believe? Hydrobiologia 375(376): 1–21.CrossRefGoogle Scholar
  42. Vermeij, M. J. A., 2005. Substrate composition and adult distribution determine recruitment patterns in a Caribbean brooding coral. Marine Ecology Progress Series 295: 123–133.CrossRefGoogle Scholar
  43. Vermeij, M. J. A., 2006. Early life- history dynamics of Caribbean coral species on artificial substratum: the importance of competition, growth and variation in life-history strategy. Coral Reefs 25: 59–71.CrossRefGoogle Scholar
  44. Vermeij, M. J. A. & R. P. M. Bak, 2002. How are coral populations structured by light? Marine light regimes and the distribution of Madracis. Marine Ecology Progress Series 233: 105–116.CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Zoology, George S. Wise Faculty of Life SciencesTel Aviv UniversityTel AvivIsrael
  2. 2.Department of Marine Biology, L. H. Charney School of Marine SciencesUniversity of HaifaHaifaIsrael

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