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Poster Presentations
Day 3, June 24（Tue.）
Room P (Maesato East, Foyer, Ocean Wing)
- 3P-PM-49
Exploring Chemical Interactions of the Soft Coral Carijoa (Telesto) riisei on Artificial Reefs in Southeast Queensland, Australia, using Mass Spectrometry.
(1ESc/Griff. Univ., 2GRIDD/Griff.Univ.)
oPauline Lindholm1, Darren Holland1,2, Joshua Hayton1, Tim Stevens1, Anthony Carroll1,2
Invasive species pose significant challenges to marine ecosystems, particularly in artificial reef environments where they can rapidly spread and outcompete native species. The soft coral Carijoa (Telesto) riisei is highly competitive, using rapid growth and reproductive strategies to establish dominance. While C.riisei is classified as invasive in some regions, its ecological impact in Australia remains poorly studied. Notably, C.riisei is known to produce bioactive compounds, which may contribute to its competitive success by influencing ecological interactions.
This study examines the metabolomic profile of C.riisei on artificial reefs in Southeast Queensland, Australia, using mass spectrometry-based techniques. By applying an untargeted metabolomics workflow (LC-MSe), molecular networking, and Nuclear Magnetic Resonance (NMR) spectroscopy, we characterise the chemical diversity of C.riisei and identify metabolite classes that may be involved in ecological interactions. Additionally, Mass Spectrometry Imaging (MSI) techniques, including DESI and MALDI, are used to investigate the spatial distribution of these metabolites within C.riisei tissues, providing insights into their potential roles in shaping community structure.
This integrative approach advances our understanding of C.riisei's chemical ecology and its potential influence on artificial reef ecosystems, contributing to broader discussions on the role of invasive species in marine environments.