Occurrence of a rare shark, Oxynotus centrina (Chondrichthyes: Oxynotidae), from Saros Bay, North Aegean Sea, Turkey

Occurrence of a rare shark, Oxynotus centrina (Chondrichthyes: Oxynotidae), from Saros Bay, North Aegean Sea, Turkey

Cahide Çiğdem Yığın, Ali İşmen, Umur Önal

Faculty of Marine Science and Technology, Çanakkale Onsekiz Mart University, TURKEY


A specimen of angular rough shark, Oxynotus centrina was captured on 22 September 2008, in Saros Bay, the North Aegean Sea, Turkey, by a commercial bottom trawl at a depth of 65.5-74.6 m. The captured specimen was a female with a total length of 651 mm and a weight of 4652 g. The ovaries contained a total of 12 asymmetrically distributed (7 and 5 in the right and left ovary, respectively) developing oocytes ranging from 25 to 30 mm in diameter.

Keywords: Angular rough shark, morphometric measurements, Saros Bay


Başusta, N., Erdem, Ü., Çevik, C. (1998) An investigation on chondrichthyes in İskenderun Bay. Celal Bayar University Faculty Journal, Science Series (Biology) 1: 63-69. (in Turkish)

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 the Black Sea/Mediterranean
Environment 21(1): 92-95.

Bayhan, Y.K., EK, E., Ünlüer, T., Akkaya, M. (2006) Catch and by-catch composition of the shrimp fishery by beamtrawl in the southeastern Marmara Sea. Ege University Journal of Fisheries & Aquatic Sciences 23 (3-4): 277-283.

Bradaï, M.N., Serena, F., Bianchi, I. Ebert, D.A. (2007) Oxynotus centrina. The IUCN Red List of Threatened Species 2007. (http://dx.doi.org/10.2305/IUCN.UK. 2007.RLTS.T63141A12622296.en) (Accessed 01.03.2007).

Capapé, C., Seck, A.A., Quignard, J.P. (1999) Observations on there productive biology of the angular rough shark, Oxynotus centrina (Oxynotidae). Cybium 23: 259-271.

Compagno, L.J.V. (1984) FAO Species Catalogue. Sharks of the World. An annotated and illustrated catalogue of sharks species known to date. FAO Fish Synopsis 125(Part 1): 1–250.

Corsini-Foka, M. (2009) Uncommon fishes from Rhodes and nearby marine region (SE AegeanSea, Greece). Journal of Biological Research-Thessaloniki 12: 125-133.

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 (1): 56-59.

Erazi, R.A.R. (1942) Marine fishes found in the Sea of Marmara and in the Bosphorus. Istanbul University Faculty of Science Journal, Series B 7(1-2): 103-115.

Eryılmaz, L. (2003) A study on the fishes of Bozcaada Island (north Aegean Sea). Turkish Journal of Marine Sciences 9(2): 121-137.

Gibson, C., Valenti, S.V., Fordham, S.V., Fowler, S.L. (2008) The Conservation of the Northeast Atlantic Chondrichthyans: Report of the IUCN Shark Specialist Group Northeast Atlantic Red List Workshop. NatureBureau, Newbury, 76 pp.

Ismen, A., Yigin, C.C., Altinagac, U., Ayaz, A. (2009) Length-weight relationships for ten shark species from Saros Bay (North Aegean Sea). Journal of Applied Ichthyology 25(1): 109-112.

Kabasakal, H. (2003) Historical and contemporary records of sharks from the Sea of Marmara, Turkey. Annales, Series Historia Naturalis 13(1): 1-12.

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. (2010) Historical and contemporary records of the angular rough shark Oxynotus centrina (Chondrichthyes; Oxynotidae) in Turkish waters. Mediterranean Marine Science 11(2): 361-367.

Kabasakal, H., Kabasakal, E. (2004) Sharks captured by commercial fishing vessels off the coast of Turkey in the northern Aegean Sea. Annales, series Historia Naturalis 14(2): 171-180.

Kousteni, V., Megalofonou, P. (2010) Occurrence of the rare angular rough shark, Oxynotus centrina, (Chondrichthyes: Oxynotidae) in the Greek Seas. GFCM-Transversal Expert Meeting on the Status of Elasmobranches in the Mediterranean and the Black Sea. Tunisia, Salammbô, 20-22 September 2010, p. 23.

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

Nicolaidou, A., Alongi, G., Aydogan, O., Catra, M., Cavas, L., Cevik, C., Dosi, A., Circosta, V., Giakoumi, S., Giménez-Casalduero, F., Filiz, H., IzquierdoMunoz, A., Kalogirou, S., Konstantinidis, E., Kousteni, V., Kout, J., Legaki, A.,
Megalofonou, P., Ovalis, P., Paolillo, G., Paschos, I., Perdikaris, C., Poursanidis, D., RamosEsplá, A.A., Reizopoulou, S., Sperone, E., Taskin, E., Tripepi, S., Vázquez-Luiz, M. (2012) New Mediterranean biodiversity record (June 2012). Mediterranean Marine Science 13(1): 162–174.

Öziç, F., Yılmaz, F. (2006) An investigation of demersal fishes of Gökova Bay in Aegean Sea. Ecology 15(58): 16-20.

Papaconstantinou, C. (1988) Check-list of marine fishes of Greece. Fauna Graeciae IV. National Center for Marine Research, Athens, 257 pp.

Tortonese, E. (1956) Fauna d_Italia Vol. II. Leptocardia, Ciclostomata, Selachii, Calderini, Bologna, 334 pp.