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Deep-sea anglerfishes (Lophiiformes: Ceratioidei) from the western North Atlantic: Testing the efficacy of DNA barcodes

AuthorsBañón, Rafael; Barros-García, David; Arronte, Juan Carlos; Comesaña, Ángel Sebastián; Sánchez-Ruiloba, Lucía; Carlos, Alejandro de
Species identification
Issue Date2019
PublisherJohn Wiley & Sons
CitationJournal of Zoological Systematics and Evolutionary Research 57(3): 606-622 (2019)
AbstractThe taxonomy of ceratioid fishes is challenging and frequently based on a small num-ber of female specimens described for each species. Twenty ceratioid specimens caught on Flemish Cap and Grand Bank (western North Atlantic), representing 12 species and six families: Ceratias holboelli and Cryptopsaras couesii (Ceratiidae); Himantolophus albinares (Himantolophidae); Melanocetus johnsonii (Melanocetidae); Lophodolos acanthognathus, Oneirodes eschrichtii, Dolopichthys karsteni, and Leptacanthichthys gracilispinis (Oneirodidae); Caulophryne polynema (Caulophrynidae); and Haplophryne mollis, Linophryne brevibarbata, and L. bicornis (Linophrynidae) were identified by examination of morphological characters. DNA barcode sequences, from the 5′ end of the COI mitochondrial gene, were developed for 18 specimens and compared with all ceratioid barcode sequences available in public repositories. The analyses extended the ranges of some quantitative traits for certain species, high-lighted the possible existence of cryptic species in C.couesii with distinct ranges in the Atlantic and Pacific oceans, and indicated a close relationship between Bertellaand Dolopichthys meriting further attention. The authoritative identification of the 18 voucher specimens made possible detection of erroneous identifications of some se-quences extracted from the repositories and highlighting of taxonomic conflicts that should be the subject of future studies
Description17 pages, 16 figures, 3 tables
Publisher version (URL)http://dx.doi.org/10.1111/jzs.12281
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