High diversity and pan-oceanic distribution of deep-sea polychaetes: Prionospio and Aurospio (Annelida: Spionidae) in the Atlantic and Pacific Ocean

Type Article
Date 2020-06
Language English
Author(s) Guggolz Theresa1, Meißner Karin2, Schwentner Martin1, 3, Dahlgren Thomas G.4, 5, 6, Wiklund Helena7, Bonifácio Paulo8, Brandt Angelika9, 10
Affiliation(s) 1 : Zoological Museum Hamburg, Center of Natural History, Universität Hamburg, Martin-Luther-King-Platz 3, 20146, Hamburg, Germany
2 : German Centre for Marine Biodiversity Research, Senckenberg am Meer, c/o Universität Hamburg, Martin-Luther-King-Platz 3, 20146, Hamburg, Germany
3 : 3rd Zoological Department, Natural History Museum Vienna, Burgring 7, 1010, Vienna, Austria
4 : Department of Marine Sciences, University of Gothenburg, PO Box 461, SE-405 30, Gothenburg, Sweden
5 : Gothenburg Global Biodiversity Centre, PO Box 461, SE-405 30, Gothenburg, Sweden
6 : NORCE Norwegian Research Centre, Postboks 22 Nygårdstangen, 5838, Bergen, Norway
7 : Life Sciences Department, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK
8 : Ifremer, Centre Bretagne, REM EEP, Laboratoire Environnement Profond, ZI de la Pointe du Diable, CS 10070, 29280, Plouzane, France
9 : Senckenberg Research Institute and Natural History Museum, Senckenberganlage 25, 60325, Frankfurt, Germany
10 : Biozentrum, Campus Riedberg, Goethe-University Frankfurt, Max-von-Laue-Str. 9, 60438, Frankfurt, Germany
Source Organisms Diversity & Evolution (1439-6092) (Springer Science and Business Media LLC), 2020-06 , Vol. 20 , N. 2 , P. 171-187
DOI 10.1007/s13127-020-00430-7
WOS© Times Cited 18
Keyword(s) Distribution patterns, Haplotype networks, Vema-Fracture-Zone, Clarion-Clipperton Fracture Zone, 16S rRNA, 18S

Prionospio Malmgren 1867 and Aurospio Maciolek 1981 (Annelida: Spionidae) are polychaete genera commonly found in the deep sea. Both genera belong to the Prionospio complex, whose members are known to have limited distinguishing characters. Morphological identification of specimens from the deep sea is challenging, as fragmentation and other damages are common during sampling. These issues impede investigations into the distribution patterns of these genera in the deep sea. In this study, we employ two molecular markers (16S rRNA and 18S) to study the diversity and the distribution patterns of Prionospio and Aurospio from the tropical North Atlantic, the Puerto Rico Trench and the central Pacific. Based on different molecular analyses (Automated Barcode Gap Discovery, GMYC, pairwise genetic distances, phylogenetics, haplotype networks), we were able to identify and differentiate 21 lineages (three lineages composed solely of GenBank entries) that represent putative species. Seven of these lineages exhibited pan-oceanic distributions (occurring in the Atlantic as well as the Pacific) in some cases even sharing identical 16S rRNA haplotypes in both oceans. Even the lineages found to be restricted to one of the oceans were distributed over large regional scales as for example across the Mid-Atlantic Ridge from the Caribbean to the eastern Atlantic (> 3389 km). Our results suggest that members of Prionospio and Aurospio may have the potential to disperse across large geographic distances, largely unaffected by topographic barriers and possibly even between oceans. Their high dispersal capacities are probably explained by their free-swimming long-lived planktonic larvae.

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Guggolz Theresa, Meißner Karin, Schwentner Martin, Dahlgren Thomas G., Wiklund Helena, Bonifácio Paulo, Brandt Angelika (2020). High diversity and pan-oceanic distribution of deep-sea polychaetes: Prionospio and Aurospio (Annelida: Spionidae) in the Atlantic and Pacific Ocean. Organisms Diversity & Evolution, 20(2), 171-187. Publisher's official version : https://doi.org/10.1007/s13127-020-00430-7 , Open Access version : https://archimer.ifremer.fr/doc/00610/72216/