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The northernmost record of Sepietta oweniana (Cephalopoda: Sepiolidae) and comments on boreo-subtropical cephalopod species occurrence in the Arctic

Published online by Cambridge University Press:  17 June 2014

Alexey V. Golikov*
Affiliation:
Department of Invertebrate Zoology, Kazan Federal University, 420008 Kazan, Russia
Rushan M. Sabirov
Affiliation:
Department of Invertebrate Zoology, Kazan Federal University, 420008 Kazan, Russia
Pavel A. Lubin
Affiliation:
Laboratory of Coastal Research, Polar Research Institute of Marine Fisheries and Oceanography, 183038 Murmansk, Russia
Lis L. Jørgensen
Affiliation:
Institute of Marine Research, PO Box 6404 NO-9294 Tromsø, Norway
Inger-Marie Beck
Affiliation:
Institute of Marine Research, PO Box 1870 Nordnes, NO-5817 Bergen, Norway
*
Correspondence should be addressed to: A.V. Golikov, Department of Invertebrate Zoology, Kazan Federal University, 420008, Kremlyovskaya str. 18, Kazan, Russia email: [email protected]
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Abstract

The first observation of the common bobtail squid Sepietta oweniana has been made in the Barents Sea (Tromsø Bank; 70°54′N 19°46.8′E). It is the northernmost area of this species distribution. No changes were found in the reproductive system structure. But the food spectrum was changed, particularly, juvenile fish of the Lotidae family was found. The bobtail squid of the Sepiolinae subfamily have never been recorded as fish eaters previously. The expansion of boreo-subtropical species of cephalopods into the Arctic during the last decade can be divided into two groups: (1) a foraging migration happening relatively regularly; and (2) a range expansion due to the ongoing Arctic warming. The case of S. oweniana obviously belongs to the second group.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2014 

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References

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