Assessing ecological and molecular divergence between the closely related species Hydrolagus pallidus and H. affinis (Chimaeridae) |
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| Authors: | B Violi M R Gaither F Burns A Rus Hoelzel F Neat |
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| Institution: | 1. School of Biological and Biomedical Sciences, Durham University, South Road, Durham, DH1 3LE, U.K.;2. Department of Earth, Environment and Life Sciences, University of Genova, Corso Europa 26, 16132, Genoa, Italy;3. Interuniversitary Consortium “Istituto Nazionale Biostrutture e Biosistemi” (INBB), Viale delle Medaglie d'Oro, 305, Rome, Italy;4. Section of Ichthyology, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, California, 94118, U.S.A.;5. Marine Scotland 6. – 7. Science, 375 Victoria Road, Aberdeen, AB11 9DB, U.K. |
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| Abstract: | This study investigated taxonomic validity of the pale ghost shark Hydrolagus pallidus Hardy & Stehmann, 1990, which was described as a species distinct from the smalleyed rabbitfish H. affinis (de Brito Capello 1868). While few morphological characters distinguish the two taxa, a striking difference in sex ratio and fixed differences (1·1–1·6% divergence) in the cytochrome oxidase subunit I barcoding gene support the recognition of both species. |
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| Keywords: | Chimaeridae COI cryptic species fishing pressure Holocephali Rockall Trough |
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