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First records from the Ligurian Sea of the cold water species Okenia aspersa and Doto koenneckeri (Gastropoda: Nudibranchia)

Published online by Cambridge University Press:  09 July 2015

Federico Betti ,
Riccardo Cattaneo-Vietti  and
Simone Bava
Federico Betti*
Affiliation:
DISTAV, Università degli Studi di Genova, Corso Europa 26, 16132, Genova, Italy
Riccardo Cattaneo-Vietti
Affiliation:
DiSVA, Università Politecnica delle Marche, Via Brecce Bianche, 60131, Ancona, Italy
Simone Bava
Affiliation:
Comune di Bergeggi, AMP Isola di Bergeggi, Via De Mari 28 D, 17028, Bergeggi (SV), Italy
*
Correspondence should be addressed to F. Betti, DISTAV, Università degli Studi di Genova, Corso Europa 26, 16132, Genova, Italy email: [email protected]
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Abstract

Okenia aspersa is a north-eastern Atlantic species, only previously recorded as Okenia quadricornis from the Malta Archipelago in the Mediterranean Sea, and in juvenile forms, from Sicily and the Gulf of Naples. A second adult specimen is recorded in the present paper, which was found along the Noli Cape coast, in the western Ligurian Sea (Italy). It was found on pebbles at a depth of 10 m. In the same area, at a depth of 5.5 m, two specimens of Doto koenneckeri and three of their egg masses were found. This species, also described from Norway and Ireland, was only previously known to occur in the Mediterranean Sea off Spain and France. It is likely that the cold winter temperatures of the Ligurian Sea allowed this species to live and reproduce.

Keywords

Okenia aspersaDoto koenneckeriMediterranean SeaLigurian Seafirst recordItaly
Type
Research Article
Information
Marine Biodiversity Records , Volume 8 , 2015 , e105
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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References

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