Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes

Establishing the foundations for a sustainable use of deep‐sea resources relies on increasing knowledge on this inaccessible ecosystem, which is challenging with traditional methods. The analysis of environmental DNA (eDNA) emerges as an alternative, but it has been scarcely applied to deep‐sea fish...

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Autores principales:	Oriol Canals, Iñaki Mendibil, María Santos, Xabier Irigoien, Naiara Rodríguez‐Ezpeleta
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/de472f56aca04740819f4fdc870b0ae4
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spelling	oai:doaj.org-article:de472f56aca04740819f4fdc870b0ae42021-11-08T07:38:24ZVertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes2378-224210.1002/lol2.10213https://doaj.org/article/de472f56aca04740819f4fdc870b0ae42021-12-01T00:00:00Zhttps://doi.org/10.1002/lol2.10213https://doaj.org/toc/2378-2242Establishing the foundations for a sustainable use of deep‐sea resources relies on increasing knowledge on this inaccessible ecosystem, which is challenging with traditional methods. The analysis of environmental DNA (eDNA) emerges as an alternative, but it has been scarcely applied to deep‐sea fish. Here, we have analyzed the fish eDNA contained in oceanic vertical profile samples (up to 2000 m depth) collected throughout the continental slope of the Bay of Biscay. We detected 52 different fish species, of which 25 were classified as deep‐sea fish. We found an increase of deep‐sea fish richness and abundance with depth, and that eDNA reflects day–night community patterns and species‐specific vertical distributions that are consistent with the known diel migratory behavior of many mesopelagic fishes. These findings highlight the potential of eDNA to improve knowledge on the fish species inhabiting the dark ocean before this still pristine ecosystem is further exploited.Oriol CanalsIñaki MendibilMaría SantosXabier IrigoienNaiara Rodríguez‐EzpeletaWileyarticleOceanographyGC1-1581ENLimnology and Oceanography Letters, Vol 6, Iss 6, Pp 339-347 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Oceanography GC1-1581
spellingShingle	Oceanography GC1-1581 Oriol Canals Iñaki Mendibil María Santos Xabier Irigoien Naiara Rodríguez‐Ezpeleta Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes
description	Establishing the foundations for a sustainable use of deep‐sea resources relies on increasing knowledge on this inaccessible ecosystem, which is challenging with traditional methods. The analysis of environmental DNA (eDNA) emerges as an alternative, but it has been scarcely applied to deep‐sea fish. Here, we have analyzed the fish eDNA contained in oceanic vertical profile samples (up to 2000 m depth) collected throughout the continental slope of the Bay of Biscay. We detected 52 different fish species, of which 25 were classified as deep‐sea fish. We found an increase of deep‐sea fish richness and abundance with depth, and that eDNA reflects day–night community patterns and species‐specific vertical distributions that are consistent with the known diel migratory behavior of many mesopelagic fishes. These findings highlight the potential of eDNA to improve knowledge on the fish species inhabiting the dark ocean before this still pristine ecosystem is further exploited.
format	article
author	Oriol Canals Iñaki Mendibil María Santos Xabier Irigoien Naiara Rodríguez‐Ezpeleta
author_facet	Oriol Canals Iñaki Mendibil María Santos Xabier Irigoien Naiara Rodríguez‐Ezpeleta
author_sort	Oriol Canals
title	Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes
title_short	Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes
title_full	Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes
title_fullStr	Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes
title_full_unstemmed	Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes
title_sort	vertical stratification of environmental dna in the open ocean captures ecological patterns and behavior of deep‐sea fishes
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/de472f56aca04740819f4fdc870b0ae4
work_keys_str_mv	AT oriolcanals verticalstratificationofenvironmentaldnaintheopenoceancapturesecologicalpatternsandbehaviorofdeepseafishes AT inakimendibil verticalstratificationofenvironmentaldnaintheopenoceancapturesecologicalpatternsandbehaviorofdeepseafishes AT mariasantos verticalstratificationofenvironmentaldnaintheopenoceancapturesecologicalpatternsandbehaviorofdeepseafishes AT xabieririgoien verticalstratificationofenvironmentaldnaintheopenoceancapturesecologicalpatternsandbehaviorofdeepseafishes AT naiararodriguezezpeleta verticalstratificationofenvironmentaldnaintheopenoceancapturesecologicalpatternsandbehaviorofdeepseafishes
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Vertical stratification of environmental DNA in the open ocean captures ecological patterns and behavior of deep‐sea fishes

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