Chemical composition and release in situ due to injury of the invasive coral tubastraea (Cnidaria, Scleractinia)

Authors

  • Bruno G. Lages Universidade do Estado do Rio de Janeiro
  • Beatriz G. Fleury Universidade do Estado do Rio de Janeiro; Departamento de Ecologia
  • Cláudia M. Rezende Universidade Federal do Rio de Janeiro; Instituto de Química
  • Angelo C. Pinto Universidade Federal do Rio de Janeiro; Instituto de Química
  • Joel C. Creed Universidade do Estado do Rio de Janeiro; Departamento de Ecologia

DOI:

https://doi.org/10.1590/S1679-87592010000800007

Keywords:

Injury, secondary metabolites, Tubastraea coccinea, Tubastraea tagusensis, submersible apparatus

Abstract

Defensive chemistry may be used against consumers and competitors by invasive species as a strategy for colonization and perpetuation in a new area. There are relatively few studies of negative chemical interactions between scleratinian corals. This study characterizes the secondary metabolites in the invasive corals Tubastraea tagusensis and T. coccinea and relates these to an in situ experiment using a submersible apparatus with Sep-Paks® cartridges to trap substances released by T. tagusensis directly from the sea-water. Colonies of Tubastraea spp were collected in Ilha Grande Bay, RJ, extracted with methanol (MeOH), and the extracts washed with hexane, dichloromethane (DCM) and methanol, and analyzed by GC/MS. Methyl stearate and methyl palmitate were the major components of the hexane and hexane:MeOH fractions, while cholesterol was the most abundant in the DCM and DCM:MeOH fractions from Tubastraea spp. The organic material retained in Sep-Paks® cartridges was tentatively identified as hydrocarbons. There was a significant difference between treatments and controls for 1-hexadecene, n-hexadecane and n-eicosane contents. The production of defensive substances by the invasive corals may be a threat to the benthic communities of the region, which include endemic species.

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Published

2010-01-01

How to Cite

Lages, B. G., Fleury, B. G., Rezende, C. M., Pinto, A. C., & Creed, J. C. (2010). Chemical composition and release in situ due to injury of the invasive coral tubastraea (Cnidaria, Scleractinia). Brazilian Journal of Oceanography, 58(spe4), 47-56. https://doi.org/10.1590/S1679-87592010000800007

Issue

Section

naodefinida