Abstract
Squids of the family Onychoteuthidae are ecologically important in pelagic food webs and have been reported from every ocean except the Arctic. Although they are abundant and caught frequently as bycatch in fisheries, the biogeography of many species remains poorly understood. Species identification within the Atlantic Ocean is usually restricted to two species: Onychoteuthis banksii and Onykia carriboea. Here, we report the occurrence of four species of the family Onychoteuthidae (Onychoteuthis cf. banksii, Onykia carriboea, Walvisteuthis jeremiahi, and Onychoteuthis sp. AL 2) from the Sargasso Sea in the western Atlantic, identified using DNA barcoding (cytochrome c oxidase subunit I) and morphology. Our results have doubled the known onychoteuthid biodiversity in the Sargasso Sea, which has implications for the ecology of this oceanic region.
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Acknowledgements
We would like to thank Dr. Reinhold Hanel for providing the material collected during the two cruises. Thanks also to the captain and crew of RV Maria S. Merian and FRV Walther Herwig III for their skilful support. The ship cruise was funded by the Deutsche Forschungsgemeinschaft (Grant MerMet 14-46 (SEA-EELS)). We would like to thank the Roche Lab for their assistance with our molecular work and the Auckland University of Technology for funding the barcoding project.
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Guest editors: Erica A. G. Vidal, Ian G. Gleadall & Natalie Moltschaniswskyi / Advances in Cephalopod Ecology and Life Cycles
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Lischka, A., Braid, H.E. & Bolstad, K.S.R. DNA barcoding from the hooked squids (Cephalopods: Onychoteuthidae) of the Sargasso Sea. Hydrobiologia 808, 107–113 (2018). https://doi.org/10.1007/s10750-017-3189-0
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DOI: https://doi.org/10.1007/s10750-017-3189-0