Trapped DNA fragments in marine sponge specimens unveil North Atlantic deep-sea fish diversity
Neave, E.F.; Cai, W.; Arias, M.B.; Harper, L.R.; Riesgo, A.; Mariani, S. (2023). Trapped DNA fragments in marine sponge specimens unveil North Atlantic deep-sea fish diversity. Proc. - Royal Soc., Biol. Sci. 290(2005): 20230771. https://dx.doi.org/10.1098/rspb.2023.0771
In: Proceedings of the Royal Society of London. Series B. The Royal Society: London. ISSN 0962-8452; e-ISSN 1471-2954, meer
Sponges pump water to filter feed and for diffusive oxygen uptake. In doing so, trace DNA fragments from a multitude of organisms living around them are trapped in their tissues. Here we show that the environmental DNA retrieved from archived marine sponge specimens can reconstruct the fish communities at the place of sampling and discriminate North Atlantic assemblages according to biogeographic region (from Western Greenland to Svalbard), depth habitat (80–1600 m), and even the level of protection in place. Given the cost associated with ocean biodiversity surveys, we argue that targeted and opportunistic sponge samples – as well as the specimens already stored in museums and other research collections – represent an invaluable trove of biodiversity information that can significantly extend the reach of ocean monitoring.
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