Abstract
New finds of Chimaera owstoni and Hydrolagus purpurescens in the region of the Emperor Seamount Chain have been reported based on materials collected in summer 2009. Both species have proven to be rare with respect to the frequency of occurrence. Ch. owstoni was recorded only in Koko Seamount in longline catches at depths of 385–650 m. H. purpurescens was caught on the Jingu, Ojin, Lira, and Koko seamounts in the depth range of 559–1056 m. The TL of the captured individuals of Ch. owstoni was 67–84 cm and their weight was 1.04–3.38 kg; H. purpurescens was represented by larger specimens: 98–145 cm and 4.51–17.45 kg, respectively.
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Notes
Taking into account the distances between the Japanese and Hawaiian Islands, Poltev and Sheiko (2007) question the single population status of H. purpurescens within the known range and assume the existence of two separate species.
The species is indicated as Chimaera sp.
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ACKNOWLEDGMENTS
The authors are deeply grateful to I.Yu. Spirin (KamchatNIRO), who directly participated in the expedition to the Emperor Seamount Chain in summer 2009 and collected a significant part of the primary material, as well as to A.A. Balanov (National Scientific Center for Marine Biology, Far Eastern Branch, Russian Academy of Sciences) for assistance in the species identification of the captured fish individuals and the reviewers for important comments to the manuscript.
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Kurbanov, Y.K., Michalutin, E.A. New Finds of Chimaeras (Holocephali: Chimaeriformes) in the Region of the Emperor Seamount Chain (Northern Pacific Ocean). J. Ichthyol. 62, 1307–1311 (2022). https://doi.org/10.1134/S0032945222040142
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DOI: https://doi.org/10.1134/S0032945222040142