Color patterns of the thornback skate, Raja clavata Linnaeus, 1758, from the Sea of Marmara suggesting possible misidentifications of several rajids in the region
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Abstract
Trawl surveys conducted in shelf waters of the northeastern Sea of Marmara revealed for the first time the occurrence of atypically colored thornback skates, Raja clavata Linnaeus, 1758 (Rajiformes: Rajidae), in the region. Since atypical coloring may lead to confusion and misidentification of R. clavata, an integrated approach of conventional alpha taxonomy and genetic studies is needed to resolve the taxonomic status of Raja species occurring in the Sea of Marmara. Accurate taxonomic resolution is the first step to properly differentiate the populations of the aforementioned species prior to performing further study and effective conservation.
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References
Atlas of the Maturity Stages of Mediterranean Fishery Resources / M. C. Follesa, P. Carbonara (Eds). Rome : FAO, 2019, 268 p. (Studies and Reviews ; no. 99).
Barone M., Mazzoldi C., Serena F. Sharks, Rays and Chimaeras in Mediterranean and Black Seas – Key to Identification. Rome : FAO, 2022, 87 p. https://doi.org/10.4060/cc0830en
Bilecenoğlu M., Kaya M., Cihangir B., Çiçek E. An updated checklist of the marine fishes of Turkey. Turkish Journal of Zoology, 2014, vol. 38, no. 6, pp. 901–929. https://doi.org/10.3906/zoo-1405-60
Capapé C., Aydın I., Akyol O. Morphological deformities and atypical colour pattern in thornback ray, Raja clavata (Elasmobranchii: Rajiformes: Rajidae), from Izmir (Turkey, Aegean Sea, Eastern Mediterranean). Acta Ichthyologica et Piscatoria, 2018, vol. 48, no. 3, pp. 261–266. https://doi.org/10.3750/AIEP/02399
Chatzispyrou A., Gubili C., Anastasopoulou A., Koutsikopoulos C. Resolving taxonomic confusion in Rajidae (Superorder Batoidea) through DNA sequencing: The case of Raja clavata in the eastern Ionian Sea. In: European Elasmobranch Association : the 23rd Annual Conference, Rende (Italy), 16–18 October, 2019. Rende, 2019, poster.
Ebert D. A., Stehmann M. F. W. Sharks, Batoids and Chimaeras of the North Atlantic. Rome : FAO, 2013, 523 p. (FAO Species Catalogue for Fishery Purposes ; no. 7).
Gajić A. A., Sulikowski J. A., Beširović H. An interesting case of a single ocellus in a brown ray from the Adriatic Sea. Marine Biodiversity, 2023, vol. 53, art. no. 29 (2 p.). https://doi.org/10.1007/s12526-023-01345-0
Hubbs C. L., Ishiyama R. Methods for the taxonomic study and description of skates (Rajidae). Copeia, 1968, vol. 1968, no. 3, pp. 483–491. https://doi.org/10.2307/1442016
Karadurmuş U., Sarı M. Distribution and diversity of elasmobranchs in the Sea of Marmara: A 2023 status report. Aquatic Conservation: Marine and Freshwater Ecosystems, 2024, vol. 34, iss. 3, art. no. e4121 (12 p.). https://doi.org/10.1002/aqc.4121
Last P. R., Séret B., Stehmann M. F. W., Weigmann S. Skates: Family Rajidae. In: Rays of the World / P. Last, G. Naylor, B. Séret, W. White, M. Stehmann, M. de Carvalho (Eds). Clayton South : CSIRO Publishing, 2016, pp. 204–363. https://doi.org/10.1071/9780643109148
Mnasri N., Boumaïza M., Ben Amor M. M., Capapé C. Polychromatism in the thornback ray, Raja clavata (Chondrichthyes: Rajidae) off northern Tunisian coast (central Mediterranean). Pan-American Journal of Aquatic Sciences, 2009, vol. 4, no. 4, pp. 572–579.
Pyšek P., Hulme P. E., Meyerson L. A., Smith G. F., Boatwright J. S., Crouch N. R., Figueiredo E., Foxcroft L. C., Jarošík V., Richardson D. M., Suda J., Wilson J. R. U. Hitting the right target: Taxonomic challenges for, and of, plant invasions. AoB PLANTS, 2013, vol. 5, plt042 (25 p.). https://doi.org/10.1093/aobpla/plt042
Quigley D. T. G., de Carlos A., Barros-Garcia D., MacGabhann D. Albino xanthochromic homelyn ray Raja montagui Fowler, 1910 (Elasmobranchii: Batoidea) from the Irish Sea. Bulletin of the European Association of Fish Pathologists, 2018, vol. 38, iss. 4, pp. 109–114.
Turan C. Molecular systematic analyses of Mediterranean skates (Rajiformes). Turkish Journal of Zoology, 2008, vol. 32, no. 4, pp. 437–442.
Weigmann S., Reinecke T. Additions to the taxonomy of the Antarctic dark-mouth skate Bathyraja arctowskii (Dollo, 1904), with descriptions of the syntypes and morphology of teeth, dermal denticles and thorns. Diversity, 2023, vol. 15, iss. 8, art. no. 899 (22 p.). https://doi.org/10.3390/d15080899