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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Resurrection and redescription of Squalus suckleyi (Girard, 1854) from the North Pacific, with comments on the Squalus acanthias subgroup (Squaliformes: Squalidae
Zootaxa, No. 2612, Year 2010
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Description
A taxonomie re-evaluation of the status of the North Pacific Squalus suckleyi (Girard, 1854) combining the use of meristie, morphological and molecular data reveal this species to be clearly distinct from the widespread Squalus acanthias (Linneaus, 1758). Differences in the external morphology between S. acanthias and S. suckleyi are subtle and are likely to be masked by intraspecific variation within individuals. However, we found S. suckleyi to differ from S.acanthias based on the following morphological and meristic characteristics: a short, broadly-rounded to acute snout;first dorsal-fin midpoint more posterior to pectoral-fin insertion; pelvic-fin origin closer to second dorsal fin than first dorsal fin; total vertebral counts average 99 (97-106). Molecular analysis of approximately 650 bp of the CO1 mitochondrial gene (DNA barcode region) showed separation of S. suckleyi and S. acanthias into two distinct genetic clades with 98% bootstrap support. Within species genetic diversities were 0.109±0.036% and 0.176±0.041% for S.suckleyi and S. acanthias respectively; between species diversity was 5- 6 fold greater at 0.765+0.307%. Squalussuckleyi is thus resurrected and a neotype for this endemic North Pacific Squalus species is designated. Copyright © 2010 Magnolia Press.
Authors & Co-Authors
Ebert, David A.
United States, Moss Landing
Moss Landing Marine Laboratories
United States, San Francisco
California Academy of Sciences
South Africa, Grahamstown
South African Institute for Aquatic Biodiversity
White, William T.
Australia, Hobart
Csiro Marine and Atmospheric Research
Goldman, Kenneth J.
United States, Juneau
Alaska Department of Fish and Game
Compagno, Leonard J.V.
South Africa, Cape Town
Iziko South African Museum
Daly-Engel, Toby S.
United States, Kaneohe
University of Hawaii Windward Community College
Ward, Robert D.
Australia, Hobart
Csiro Marine and Atmospheric Research
Statistics
Citations: 106
Authors: 6
Affiliations: 7
Identifiers
Doi:
10.11646/zootaxa.2612.1.2
ISSN:
11755326
e-ISSN:
11755334
Research Areas
Genetics And Genomics