Coral Reefs

, Volume 3, Issue 4, pp 183–190

Bleaching of reef coelenterates in the San Blas Islands, Panama

  • Howard R. Lasker
  • Esther C. Peters
  • Mary Alice Coffroth
Article

Abstract

Starting in June 1983, 25 species of hermatypic corals, gorgonians, hydrocorals, anemones and zoanthids in the San Blas Islands, Panama, began showing signs of a loss of colour leading in some cases to a white “bleached” appearance. Histologic examination of six coral species indicated that bleaching was associated with drastic reductions in the density of zooxanthellae and with the atrophy and necrosis of the animal tissue. The severity of the bleaching varied among species and many species were unaffected. The species most extensively affected were: Agaricia spp., which became completely bleached and frequently died; Montastraea annularis which bleached and continued to survive; and Millepora spp. which bleached white but quickly regained their colouration. Shallow reefs dominated by Agaricia spp. suffered the most extensive bleaching. At one site, Pico Feo, 99% of the Agaricia (32% of the living cover) was bleached. On fore reers, which were dominated by Agaricia spp. and M. annularis, the proportion of M. annularis bleached ranged from 18 to 100% and that of Agaricia spp. from 30 to 53%. Transects at Sail Rock and House Reef were surveyed in August 1983 and January 1984. At those sites, 53% of the Agaricia cover died between August and January. The remaining living cover of Agaricia and of all other species exhibited normal colouration in January. Salinity and temperature were monitored every second day at 4 m depth between May 10 and August 28, 1983 at one of the localities. Bleaching was first observed within two weeks of a 2 °C rise in temperature which occurred in late May 1983. Temperatures remained at or above 31.5 °C for the following 3 weeks and were at or above 30 °C for an additional 4 weeks. The bleaching of corals in the San Blas was most likely due to those elevanted temperatures.

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References

  1. Barszcz CA, Yevich PP (1975) The use of Helly's fixative for marine invertebrate histopathology. Comp Pathol Bull 7:4Google Scholar
  2. Clayton WS Jr, Lasker HR (1982) Effects of ligh and dark treatments on feeding by the reef coral Pocillopora damicornis (Linnaeus). J Exp Mar Biol Ecol 63:269–279Google Scholar
  3. Coles SL (1975) A comparison of effects of elevated temperature versus temperature fluctuations on reef corals at Kahe Point, Oahu. Pac Sci 29:15–18Google Scholar
  4. Coles SL, Jokiel PL (1977) Effects of temperature on photosynthesis and respiration in hermatypic corals. Mar Biol 43:209–216Google Scholar
  5. Coles SL, Jokiel PL (1978) Synergistic effects of temperature, salinity and light on the hermatypic coral Montipora verrucosa. Mar Biol 49:187–195Google Scholar
  6. Coles SL, Jokiel PL, Lewis CR (1976) Thermal tolerance in tropical versus subtropical Pacific reef corals. Pac Sci 30:159–166Google Scholar
  7. Connell JH (1978) Diversity in tropical rain forests and coral reefs. Science 199:1302–1310Google Scholar
  8. Connell JH (1983) Disturbance and patch dynamics of reef corals. In: Baker JT, Carter RM, Sammarco PW, Stark KP (eds) Proceedings of the Inaugural Great Barrier Reef Conference Townsville 1983, James Cook University, Townsville, pp 179–190Google Scholar
  9. Franzisket L (1970) The atrophy of hermatypic reef corals maintained in darkness and their subsequent regeneration in light. Int Rev Hydrobiol 55:1–12Google Scholar
  10. Glynn PW (1983) Extensive “bleaching” and death of reef corals on the Pacific coast of Panama. Environ Conserv 10:149–154Google Scholar
  11. Glynn PW (1984) Widespread coral mortality and the 1982–83 El Niño warming event. Environ Conserv 11:133–146Google Scholar
  12. Goreau TF (1964) Mass expulsion of zooxanthellae from Jamaican reef communities after Hurricane Flora. Science 145:383–386Google Scholar
  13. Highsmith RC (1979) Coral growth rates and environmental control of density banding. J Exp Mar Biol Ecol 37:105–125Google Scholar
  14. Jaap WC (1979) Observations on zooxanthellae expulsion at Middle Sambo Reef, Florida Keys. Bull Mar Sci 29:414–422Google Scholar
  15. Jokiel PL, Coles SL (1974) Effects of heated effluent on hermatypic corals at Kahe Pint, Oahu. Pac Sci 28:1–18Google Scholar
  16. Jokiel PL, Coles SL (1977) Effects of temperature on the mortality and growth of Hawaiian reef corals. Mar Biol 43:201–208Google Scholar
  17. Kinsman DJJ (1964) Reef-coral tolerance of high temperatures and salinities. Nature (London) 202:1280–1282Google Scholar
  18. Lasker HR (1979) Light dependent activity patterns among reef corals: Montastraea cavernosa. Biol Bull 156:196–211Google Scholar
  19. Lasker HR, Coffroth MA, Lessios H, Morin J, Peters E, Shulman M (1983) Extensive “bleaching” of Caribbean corals in the San Blas Islands Panama. Coral Reef Workshop, Annual Meeting of the American Society Zoology, Philadelphia (poster presentation)Google Scholar
  20. Lessios HA, Glynn PW, Robertson DR (1983) Mass mortalities of coral reef organisms. Science 222:715Google Scholar
  21. Luna LG (ed) (1968) Manual of histologic techniques of the Armed Forces Institute of Pathology, 3rd edn. McGraw-Hill, New YorkGoogle Scholar
  22. Marcus J, Thorhaug A (1981) Pacific versus Atlantic responses of subtropical hermatypic coral Porites spp. to temperature and salinity effects. Proc 4th Int Coral Reef Symp 2:15–20Google Scholar
  23. Muscatine L, McCloskey LR, Marian RE (1981) Estimating the daily contribution of carbon from zooxanthellae to coral animal respiration. Limnol Oceanogr 26:601–611Google Scholar
  24. Peters EC (1984) A survey of cellular reactions to environmental stress and disease in Caribbean scleractinian corals. Helgol Wiss Meeresunters. 37:113–137Google Scholar
  25. Peters EC, Oprandy JJ, Yevich PP (1983) Possible causal agent of “white band disease” in Caribbean acroporid corals. J Invertebr Pathol 41: 394–396Google Scholar
  26. Rogers CS (1979) The effect of shading on coral reef structure and function. J Exp Mar Biol Ecol 41:269–288Google Scholar
  27. Shinn EA (1966) Coral growth rate, an environmental indicator. J Paleontol 40:233–240Google Scholar
  28. Woodley JD, Chornesky EA, Clifford PA, Jackson JBC, Kaufman LA, Knowlton N, Land JC, Pearson MP, Porter JW, Rooney KW, Tunnicliffe VJ Wahle CM, Wulff JL, Curtis ASG, Dallmeyer MD, Jupp BP, Koehl MAR, Niegel J, Sides EM (1981) Hurrican Allen's impact on Jamaican coral reefs. Science 214:749–754Google Scholar
  29. Yamazato K (1981) A note on the expulsion of zoocanthellae during summer 1980 by the Okinawan reef-building corals. Sesoko Mar Sci Lab Tech Rep 8:9–18Google Scholar
  30. Yevich PP, Barzcz CA (in press) Preparation of aquatic animals for histopathological examination. In: Biological field and laboratory methods for measuring the quality of surface waters and effluents, 2nd edn. U.S. Environ Prot Agency, Cincinnati, OhioGoogle Scholar
  31. Yonge CM, Nichols AG (1931) Studied on the physiology of corals. V. The effect of starvation in light and in darkness on the relationship between corals and zooxanthellae. Sci Rep Great Barrier Reef Exped 1928–1929: 1:177–211Google Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Howard R. Lasker
    • 1
  • Esther C. Peters
    • 2
  • Mary Alice Coffroth
    • 3
  1. 1.Department of Biological SciencesState University of New York at BuffaloBuffaloUSA
  2. 2.Graduate School of OceanographyUniversity of Rhode IslandNarragansettUSA
  3. 3.Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiUSA

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