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Psolus rufus, a new species of sea cucumber (Holothuroidea: Psolidae) from northern Spain (Bay of Biscay)

Published online by Cambridge University Press:  18 July 2017

Irene Fernández-Rodríguez ,
Andrés Arias ,
Yaisel J. Borrell ,
Nuria Anadón ,
Claude Massin  and
José Luis Acuña
Irene Fernández-Rodríguez*
Affiliation:
Department of Organisms and Systems Biology, University of Oviedo, Oviedo 33071, Spain
Andrés Arias
Affiliation:
Department of Organisms and Systems Biology, University of Oviedo, Oviedo 33071, Spain
Yaisel J. Borrell
Affiliation:
Department of Functional Biology, University of Oviedo, Oviedo 33007, Spain
Nuria Anadón
Affiliation:
Department of Organisms and Systems Biology, University of Oviedo, Oviedo 33071, Spain
Claude Massin
Affiliation:
Department of Invertebrate Biology, Royal Belgian Institute of Natural Sciences, 29 rue Vautier, 1000 Brussels, Belgium
José Luis Acuña
Affiliation:
Department of Organisms and Systems Biology, University of Oviedo, Oviedo 33071, Spain
*
Correspondence should be addressed to: I. Fernández-Rodríguez, Department of Organisms and Systems Biology, University of Oviedo, Oviedo 33071, Spain email: [email protected]
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Abstract

A new species of holothurian of the genus Psolus Oken, 1815 is described. Psolus rufus sp. nov. was found in the central Cantabrian slope (Bay of Biscay) at 1500 m depth. The new species is characterized by having: ovoid body, reddish colour in vivo; dorsal area enclosed in a complete test composed of imbricating scales; 10 triangular plates of the same size surrounding mouth; 10 oral tentacles; no dorsal papillae; tube feet in two rows in the ventrolateral radii but one single row in the medial third or the body; ossicles are big dorsal plates and small plates in the sole, which are smooth, irregular and perforated. The molecular study of the COI gene supports the morphological results, grouping P. rufus sp. nov. together with other members of the genus. However, the new species is genetically distinct from the two groups (Antarctic and Canadian) of the available sequenced Psolus species. Furthermore, a key to the Psolus species of the north-eastern Atlantic Ocean is provided.

Keywords

HolothurianPsolidaeechinodermsbiodiversityCantabrian SeaAvilés Canyon SystemIberian Peninsula
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 98 , Issue 7 , November 2018 , pp. 1695 - 1702
Copyright
Copyright © Marine Biological Association of the United Kingdom 2017 

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