Range Extensions and New Records from Alaska and British Columbia for Two Skates, Bathyraja Spinosissima and Bathyraja Microtrachys

Recent deep-water surveys of the continental slope in the Bering Sea and the eastern North Pacific, conducted by the US National Marine Fisheries Service, Alaska Fisheries Science Center, and Fisheries and Oceans Canada, have broadened our understanding of the ichthyofauna in the region. Herein, we...

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Bibliographic Details
Published in:Northwestern naturalist (Olympia, Wash.) Wash.), 2019-03, Vol.100 (1), p.37-47
Main Authors: Orr, James W, Stevenson, Duane E, Hanke, Gavin, Spies, Ingrid B, Boutillier, James A, Hoff, Gerald R
Format: Article
Language:English
Subjects:
Alaska
Analysis
Arhynchobatidae
Bathyraja microtrachys
Bathyraja spinosissima
Bathyraja violacea
Bering Sea
British Columbia
Continental slope
Deoxyribonucleic acid
DNA
Endangered & extinct species
Fine-spined Skate
Fisheries
Fishery sciences
Fishing
GENERAL NOTES
Islands
Males
Morphology
Museums
New records
Oceans
Pacific White Skate
Rajiformes
Range extension
Range of motion
Skates (Fishes)
Species
Statistics
Varieties
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Summary:Recent deep-water surveys of the continental slope in the Bering Sea and the eastern North Pacific, conducted by the US National Marine Fisheries Service, Alaska Fisheries Science Center, and Fisheries and Oceans Canada, have broadened our understanding of the ichthyofauna in the region. Herein, we report significant new records of 2 species of skates based on morphological and molecular data. For Bathyraja spinosissima, the White Skate, we describe 2 specimens: a neonate male that constitutes a northern range extension for the species to Alaska in the Bering Sea; and an adult male representing a new record for the species in British Columbia. For B. microtrachys, the Fine-spined Skate, we describe 5 males taken in a single haul that represent the 1st record of the species in British Columbia. These specimens had been previously misidentified as B. violacea, the Okhotsk Skate, a species known only from the western Aleutian Islands and the western North Pacific.
ISSN:1051-1733
1938-5315
DOI:10.1898/NWN18-21