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Advances in the aquatic sciences
RESEARCH ARTICLE

Morphologically similar, coexisting hard corals (Porites lobata and P. solida) display similar trophic isotopic ratios across reefs and depths

Jeremiah G. Plass-Johnson A B , Christopher D. McQuaid A and Jaclyn M. Hill A
+ Author Affiliations
- Author Affiliations

A Coastal Research Group, Department of Zoology and Entomology, Rhodes University, PO Box 94, Grahamstown, 6140, South Africa.

B Department of Zoology and Entomology, Rhodes University, PO Box 94, Grahamstown, 6140, South Africa.

C Corresponding author. Present Address: Leibniz Centre for Tropical Marine Ecology, Fahrenheitstraße 6, D-28359 Bremen, Germany. Email: jeremiah.plassjohnson@zmt-bremen.de

Marine and Freshwater Research 67(5) 671-676 https://doi.org/10.1071/MF14248
Submitted: 22 August 2014  Accepted: 25 March 2015   Published: 6 August 2015

Abstract

Recent studies using stable isotope analysis in scleractinian corals have highlighted strong inter- and intra-specific variability in isotopic ratios, but few have excluded the effects of morphology, which affects resource acquisition, potentially confounding this with metabolic differences among species. Differences in the stable isotopic (δ13C and δ15N) ratios of the coral host tissue and photosymbionts of two co-existing, morphologically similar Porites corals (P. lobata and P. solida) were examined across nested spatial scales (inter-reefs and intra-reef) and across depths in Zanzibar, Tanzania. There were few differences between species in either coral host or photosymbiont isotopic ratios, but the two tissues showed different spatial patterns. Photosymbionts showed variation only in their δ13C ratios, which differed among reefs, but not by depth. In contrast, the coral hosts differed in δ13C and δ15N values among reefs and also by depth. Within-reef differences among sites occurred only for photosymbionts at one reef. The absence of differences in isotopic ratios between the two Porites species across reefs and depths, confirms that highly related and morphologically similar scleractinian corals may occupy similar ecosystem niches, metabolising resources in a similar fashion. This suggests that resource partitioning among corals, and subsequent isotopic variability, is most likely driven by resource acquisition, rather than being inherently species-specific.

Additional keywords: coral reef, nested design, stable isotopes, zooxanthellae.


References

Anthony, K. R. N. (2000). Enhanced particle-feeding capacity of corals on turbid reefs (Great Barrier Reef, Australia). Coral Reefs 19, 59–67.
Enhanced particle-feeding capacity of corals on turbid reefs (Great Barrier Reef, Australia).Crossref | GoogleScholarGoogle Scholar |

Baird, A. H., Guest, J. R., and Willis, B. L. (2009). Systematic and biogeographical patterns in the reproductive biology of scleractinian corals. Annual Review of Ecology Evolution and Systematics 40, 551–571.
Systematic and biogeographical patterns in the reproductive biology of scleractinian corals.Crossref | GoogleScholarGoogle Scholar |

Burriesci, M. S., Raab, T. K., and Pringle, J. R. (2012). Evidence that glucose is the major transferred metabolite in dinoflagellate-cnidarian symbiosis. The Journal of Experimental Biology 215, 3467–3477.
Evidence that glucose is the major transferred metabolite in dinoflagellate-cnidarian symbiosis.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XhvVKgsb7M&md5=b7855a37a83b3d235d6f5daf34009cd9CAS | 22956249PubMed |

Dubinsky, Z., and Falkowski, P. G. (2011) Light as a source of information and energy in zooxanthellate corals. In: ‘Coral Reefs: An Ecosystem in Transition’. (Eds Z. Dubinsky and N. Stambler.) pp. 107–118. (Springer: Dordrecht, Netherlands.)

Ferrier-Pagès, C., Peirano, A., Abbate, M., Cocito, S., Rottier, C., Riera, P., Rodolfo-Metalpa, R., and Reynaud, S. (2011). Summer autotrophy and winter heterotrophy in the temperate symbiotic coral Cladocora caespitose. Limnology and Oceanography 56, 1429–1438.
Summer autotrophy and winter heterotrophy in the temperate symbiotic coral Cladocora caespitose.Crossref | GoogleScholarGoogle Scholar |

Forsman, Z. H., Barshis, D. J., Hunter, C. L., and Toonen, R. J. (2009). Shape-shifting corals: molecular markers show morphology is evolutionarily plastic in Porites. BMC Evolutionary Biology 9, 45.
Shape-shifting corals: molecular markers show morphology is evolutionarily plastic in Porites.Crossref | GoogleScholarGoogle Scholar | 19239678PubMed |

Grottoli, A. G., Rodgigues, L. J., and Juarez, C. (2004). Lipids and stable carbon isotopes in two species of Hawaiian corals, Porites compressa and Montipora verrucosa, following a bleaching event. Marine Biology 145, 621–631.
Lipids and stable carbon isotopes in two species of Hawaiian corals, Porites compressa and Montipora verrucosa, following a bleaching event.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXnt1Glur0%3D&md5=58c5d6a13a27cf75d6f6f8c6ccfd019dCAS |

Heikoop, J. M., Dunn, J., Risk, M., Tomascik, T., Schwarcz, H., Sandeman, I., and Sammarco, P. (2000a). δ15N and δ13C of coral tissue show significant inter-reef variation. Coral Reefs 19, 189–193.
δ15N and δ13C of coral tissue show significant inter-reef variation.Crossref | GoogleScholarGoogle Scholar |

Heikoop, J. M., Risk, M. J., Lazier, A. V., Edinger, E. N., Jompa, J., Limmon, G. V., Dunn, J. J., Browne, D. R., and Schwarcz, H. P. (2000b). Nitrogen-15 signals of anthropogenic nutrient loading in reef corals. Marine Pollution Bulletin 40, 628–636.
Nitrogen-15 signals of anthropogenic nutrient loading in reef corals.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3cXlsFOqtLw%3D&md5=ac0a3be0aafe62410db4dcd0d2a29a33CAS |

Hoogenboom, M. O., Connolly, S. R., and Anthony, K. R. N. (2008). Interactions between morphological and physiological plasticity optimize energy acquisition in corals. Ecology 89, 1144–1154.
Interactions between morphological and physiological plasticity optimize energy acquisition in corals.Crossref | GoogleScholarGoogle Scholar | 18481538PubMed |

Hoogenboom, M., Rodolfo-Metalpa, R., and Ferrier-Pagès, C. (2010). Co-variation between autotrophy and heterotrophy in the Mediterranean coral Cladocora caespitosa. The Journal of Experimental Biology 213, 2399–2409.
Co-variation between autotrophy and heterotrophy in the Mediterranean coral Cladocora caespitosa.Crossref | GoogleScholarGoogle Scholar | 20581269PubMed |

Houlbrèque, F., and Ferrier-Pagès, C. (2009). Heterotrophy in tropical scleractinian corals. Biological Reviews of the Cambridge Philosophical Society 84, 1–17.
Heterotrophy in tropical scleractinian corals.Crossref | GoogleScholarGoogle Scholar | 19046402PubMed |

Hughes, A. D., and Grottoli, A. G. (2013). Heterotrophic compensation: a possible mechanism for resilience of coral reefs to global warming or a sign of prolonged stress? PLoS One 8, e81172.
Heterotrophic compensation: a possible mechanism for resilience of coral reefs to global warming or a sign of prolonged stress?Crossref | GoogleScholarGoogle Scholar | 24278392PubMed |

Jackson, J. (1991). Adaptation and diversity of reef corals. Bioscience 41, 475–482.
Adaptation and diversity of reef corals.Crossref | GoogleScholarGoogle Scholar |

Madin, J. S., Hoogenboom, M. O., and Connolly, S. R. (2012). Integrating physiological and biomechanical drivers of population growth over environmental gradients on coral reefs. The Journal of Experimental Biology 215, 968–976.
Integrating physiological and biomechanical drivers of population growth over environmental gradients on coral reefs.Crossref | GoogleScholarGoogle Scholar | 22357590PubMed |

Maier, C., Weinbauer, M., and Pätzold, J. (2010). Stable isotopes reveal limitations in C and N assimilation in the Caribbean reef corals Madracis auretenra, M. carmabi and M. formosa. Marine Ecology Progress Series 412, 103–112.
Stable isotopes reveal limitations in C and N assimilation in the Caribbean reef corals Madracis auretenra, M. carmabi and M. formosa.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXht1Clt7bN&md5=9e1f13f013ab583c1b7ba7ee6710e406CAS |

McCutchan, J., Lewis, W., Kendall, C., and McGrath, C. (2003). Variation in trophic shift for stable isotope ratios of carbon, nitrogen, and sulfur. Oikos 102, 378–390.
Variation in trophic shift for stable isotope ratios of carbon, nitrogen, and sulfur.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXmsl2qurg%3D&md5=ac4ba4e5806edff293c0a6abb00a281cCAS |

Muscatine, L., and Kaplan, I. R. (1994). Resource partitioning by reef corals as determined from stable isotope composition II. N of zooxanthellae and animal tissue versus depth. Pacific Science 48, 304–312.

Muscatine, A. L., and Porter, J. (1977). Reef corals: mutualistic symbioses adapted to nutrient-poor environments. Bioscience 27, 454–460.
Reef corals: mutualistic symbioses adapted to nutrient-poor environments.Crossref | GoogleScholarGoogle Scholar |

Muscatine, L., Falkowski, P. G., Porter, J. W., and Dubinsky, Z. (1984). Fate of photosynthetic fixed carbon in light- and shade-adapted colonies of the symbiotic coral Stylophora pistillata. Proceedings of the Royal Society of London. Series B, Biological Sciences 222, 181–202.
Fate of photosynthetic fixed carbon in light- and shade-adapted colonies of the symbiotic coral Stylophora pistillata.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaL2cXlsVyns7s%3D&md5=7551b808f35ea234caeddb024aa74cb5CAS |

Muscatine, L., Porter, J. W., and Kaplan, I. R. (1989). Resource partitioning by reef corals as determined from stable isotope composition. Marine Biology 100, 185–193.
Resource partitioning by reef corals as determined from stable isotope composition.Crossref | GoogleScholarGoogle Scholar |

Nahon, S., Richoux, N. B., Kolasinski, J., Desmalades, M., Ferrier Pages, C., Lecellier, G., Planes, S., and Berteaux Lecellier, V. (2013). Spatial and temporal variations in stable carbon (δ13C) and nitrogen (δ15N) Isotopic composition of symbiotic scleractinian corals. PLoS One 8, e81247.
Spatial and temporal variations in stable carbon (δ13C) and nitrogen (δ15N) Isotopic composition of symbiotic scleractinian corals.Crossref | GoogleScholarGoogle Scholar | 24312542PubMed |

Padilla-Gamiño, J. L., Hanson, K. M., Stat, M., and Gates, R. D. (2012). Phenotypic plasticity of the coral Porites rus: acclimatization responses to a turbid environment. Journal of Experimental Marine Biology and Ecology 434–435, 71–80.
Phenotypic plasticity of the coral Porites rus: acclimatization responses to a turbid environment.Crossref | GoogleScholarGoogle Scholar |

Reynaud, S., Martinez, P., Houlbrèque, F., Billy, I., Allemand, D., and Ferrier-Pagès, C. (2009). Effect of light and feeding on the nitrogen isotopic composition of a zooxanthellate coral: role of nitrogen recycling. Marine Ecology Progress Series 392, 103–110.
Effect of light and feeding on the nitrogen isotopic composition of a zooxanthellate coral: role of nitrogen recycling.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXhsFaiu7vK&md5=4e1112115806bb3d4ea83a8507b7ffa8CAS |

Risk, M., Sammarco, P., and Schwarcz, H. (1994). Cross-continental shelf trends in δ13C in coral on the Great Barrier Reef. Marine Ecology Progress Series 106, 121–130.
Cross-continental shelf trends in δ13C in coral on the Great Barrier Reef.Crossref | GoogleScholarGoogle Scholar |

Risk, M. J., Lapointe, B. E., Sherwood, O. A., and Bedford, B. J. (2009). The use of δ15N in assessing sewage stress on coral reefs. Marine Pollution Bulletin 58, 793–802.
The use of δ15N in assessing sewage stress on coral reefs.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXms1Citbo%3D&md5=2be9a5f4d12f599709ac3ec4372a032cCAS | 19286230PubMed |

Sammarco, P. W., Risk, M. J., Scwarcz, H. P., and Heikoop, J. M. (1999). Cross-continental shelf trends in coral N on the Great Barrier Reef: further consideration of the reef nutrient paradox. Marine Ecology Progress Series 180, 131–138.
Cross-continental shelf trends in coral N on the Great Barrier Reef: further consideration of the reef nutrient paradox.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3cXhs1erug%3D%3D&md5=479da20aea6316115c1a223304883f4bCAS |

Swart, P. K., Saied, A., and Lamb, K. (2005). Temporal and spatial variation in the δ15N and δ13C of coral tissue and zooxanthellae in Montastraea faveolata collected from the Florida reef tract. Limnology and Oceanography 50, 1049–1058.
Temporal and spatial variation in the δ15N and δ13C of coral tissue and zooxanthellae in Montastraea faveolata collected from the Florida reef tract.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2MXnvVWrurc%3D&md5=5bd32c62dbfafbd7adf3c8a24e0fe1e6CAS |

Veron, J. (2000). ‘Corals of the World.’ (Australian Institute of Marine Science: Townsville, Qld, Australia.)