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Length-Weight Relation of the Angular Rough Shark, Oxynotus centrina (Linnaeus, 1758) in the Mediterranean Sea

Hakan Kabasakal*, Elif Özgür Özbek

DOI: 10.28978/nesciences.1159204

Abstract

Oxynotus centrina is considered a rare or uncommon shark species throughout its distribution range. Because of this reason, it is one of the 46 uncommon elasmobranchs in the Mediterranean Sea, which requires filling the knowledge gaps, such as length-weight relations. Based on the analysis of 34 angular rough sharks, the length-weight relations (LWR) of males, females, and combined sexes of O. centrina were described as W = 0.216L2.686, W = 0.134L3.041, and W=0.102L3.173, respectively. Total lengths (TL) of females and combined sexes were strongly correlated with total weights (TW); while TL of males was moderately correlated with TW. The b values of LWRs of females and combined sexes (3.041 and 3.173, respectively) were not significantly different from 3.0 (t-test, p>0.10) and indicated positive allometric growth for the examined TL and TW range of O. centrina in the Mediterranean Sea.

Keywords

Squaliformes, Oxynotus, size, growth, parameters, LWR

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References
  • Barría, C., Navarro, J., Coll, M., Fernandez-Arcaya, U. & Sáez-Liante, R. (2015). Morphological parameters of abundant and threatened chondrichthyans of the northwestern Mediterranean Sea. Journal of Applied Ichthyology, 31(1), 114-119.
  • Başusta, N., Turan, C. & Başusta, A., (2015). New records of gravid female and adult male of the angular rough shark, Oxynotus centrina (Oxynotidae) from the northeastern Mediterranean. Journal of Black Sea/Mediterranean Environment, 21(1), 92-95.
  • Capapé, C., Seck, A. A. & Quignard, J.-P. (1999). Observations on the reproductive biology of the angular rough shark, Oxynotus centrina (Oxynotidae). Cybium, 23(3), 259-271.
  • Capapé, C. (2008). Diet of the angular rough shark Oxynotus centrina (Chondrichthyes: Oxynotidae) off the Languedocian coast (southern France, nortn-western Mediterranean). Vie et Milieu, 58(1), 57-61.
  • Compagno, L. J. V. (1984). Sharks of the world. An annotated and illustrated catalogue of sharks species known to date. Hexanchiformes to Lamniformes. FAO species catalogue. FAO Fisheries Synopsis, 125, Vol. 4(Part 1). FAO, Rome.
  • Dragičević, B., Dulčić, J. & Capapé, C. (2009). Capture of a rare shark, Oxynotus centrina (Chondrichthyes: Oxynotidae) in the eastern Adriatic Sea. Journal of Applied Ichthyology, 25(Suppl. 1), 56-59.
  • Ebert, D. A. & Stehmann, M. F. W. (2013). Sharks, batoids and chimaeras of the North Atlantic. FAO Species Catalogue for Fishery Purposes, No. 7. FAO, Rome.
  • Froese, R. (2006). Cube law, condition factor and weight-length relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology, 22(4), 241-253.
  • Geldiay, R. & Mater, S. (1968). Two species of fish found in the Aegean Sea (Oxynotus centrina L. and Ophisurus serpens L.). Scientific Reports of the Faculty of Science, Ege University, 52(33), 3-10.
  • İşmen, A., Yığın, C. Ç., Altınağaç, U. & Ayaz, A. (2009). Length-weight relationships for ten shark species from Saroz Bay (North Aegean Sea). Journal of Applied Ichthyology, 25(Suppl. 1), 109-112.
  • Kabasakal, H. (2009). Observations on a rare shark, Oxynotus centrina (Chondrichthyes: Oxynotidae), in the Sea of Marmara (north-western Turkey). Pan-American Journal of Aquatic Sciences, 4(4), 609-612.
  • Kabasakal, H. (2020). A Field Guide to the Sharks of Turkish Waters. Turkish Marine Research Foundation (TUDAV), Publication No: 55, Istanbul.
  • Kabasakal, H. (2021). A review of shark biodiversity in Turkish waters: updated inventory, new arrivals, questionable species and conservation issues. ANNALES Series Historia Naturalis, 31(2), 181-194.
  • Koehler, L. (2018). New records of angular rough sharks Oxynotus centrina in the coastal waters of Malta, with observations on post-capture resilience and release behaviour. Journal of Fish Biology, 92(6), 2039-2044.
  • Kousteni, V. & Megalofonou, P. (2016). Observations on the biological traits of the rare shark Oxynotus centrina (Chondrichthyes: Oxynotidae) in the Hellenic Seas. Journal of Fish Biology, 89(3), 1880-1888.
  • Kuriakose, S. (2017). Estimation of length weight relationship in fishes. pp. 215-220. In: A. Gopalakrishnan (Ed.), Advanced Methods for Fish Stock Assessment and Fisheries Management. ICAR-Central Marine Fisheries Research Institute, Kerala.
  • Megalofonou, P. & Damalas, D. (2004). Morphological and biological characteristics of a gravid angular rough shark (Oxynotus centrina) and its embryos from the eastern Mediterranean Sea. Cybium, 28(2), 105-110.
  • Moyle, P. B. & Cech, J. J. (1988). Fishes–An Introduction to Ichthyology. Prentice Hall, New Jersey.
  • Mutlu, E., Deval, M. C., Miglietta, C., Saygu, İ. & de Meo, I. (2022). Biometrical distribution of sharks in a low elasmobranchs-diversified shelf, the eastern Mediterranean Sea. Acta Biologica Turcica, 35(2), 1-23.
  • Quéro, J. –C. (1984). Oxynotidae. pp. 126-127. In: P. J. P. Whitehead, M. –L. Bauchot, J. –C. Hureau, J. Nielsen & E. Tortonese (Eds.). Fishes of the North-eastern Atlantic and the Mediterranean. UNESCO, Paris.
  • Ricker, W.E. (1975). Computation and Interpretation of Biological Statistics of Fish Populations. Bulletin of the Fisheries Research Board of Canada 191, Ottawa.
  • Serena, F., Abella, A. J., Bargnesi, F., Barone, M., Colloca, F., Ferretti, F., Fiorentino, F., Jenrette, J. & Moro, S. (2020). Species diversity, taxonomy and distribution of Chondrichthyes in the Mediterranean and Black Sea, The European Zoological Journal, 87(1), 497-536.
  • Tsikliras, A. C. & Dimarchopoulou, D. (2021). Filling in knowledge gaps: Length-weight relations of 46 uncommon sharks and rays (Elasmobranchii) in the Mediterranean Sea. Acta Ichthyologia et Piscatoria, 51(3), 249-255.
  • Yığın, C. Ç., İşmen, A. & Önal, U. (2016). Occurrence of a rare shark, Oxynotus centrina (Chondrichthyes: Oxynotidae), from Saros Bay, North Aegean Sea. Journal of the Black Sea/Mediterranean Environment, 22(1), 103-109.