Hidden in plain sight: hyperspectral documentation of complex biofluorescence produced by the green sea urchin (Strongylocentrotus droebachiensis)
Publikasjonsdetaljer
Tidsskrift : Methods and Applications in Fluorescence , vol. 12 , p. 1–7 , 2024
								
									Internasjonale standardnummer
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																	Trykt
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									2050-6120
									
															
Publikasjonstype : Vitenskapelig artikkel
Sak : 2
									
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																			DOI
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																						doi.org/10.1088/2050-6120/ad23...
											
										
										
																			ARKIV
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																						hdl.handle.net/11250/3123343
											
										
										
																	
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Kjetil Aune
Bibliotekleder
kjetil.aune@nofima.no
Sammendrag
Biofluorescence in echinoderms is largely unexplored, and even though the green sea urchin Strongylocentrotus droebachiensis is a well-studied species, the presence and/or function of fluorescence remains very poorly understood. Hyperspectral imaging was conducted on adult sea urchins (N = 380) while fluorospectrometric analysis was conducted on sea urchin coelomic fluid (N = 30). Fluorescence was documented in both the spines and coelomic fluid of S. droebachiensis. Intact spines exhibited a low intensity green emission (∼550–600 nm), while broken spines averaged a high emission peak in the green spectrum (∼580 nm). Sea urchins produce a red exudate with a pronounced emission peak (∼680 nm) with a shoulder peak (∼730 nm). The sampled coelomic fluid exhibited high variability, with a majority exhibiting a low-level green fluorescence while pronounced emission peaks (N = 5) were found in the red spectrum (∼680 nm). The complex fluorescence produced by S. droebachiensis warrants further investigation on its applicability for monitoring welfare of sea urchins in aquaculture facilities.

