Length-weight relationships, reproduction, Hepatosomatic index of the lesser spotted catshark, Scyliorhinus canicula [L.] the sea of Marmara, Turkey

Hatice Torcu Koç, Zeliha Erdoğan


Some biological aspects of 91 lesser spotted catshark Scyliorhinus canicula [L.] were examined. The samples were caught with trawl hauls from Bandırma Bay in the years of 2013-2014. Total lenghts of fishes ranged from 18.0-47.4 cm while their weights ranged from 28.78-583.78 g. It was observed that lenght-weight increased allometrically. As the overall sex ratio [male and female ] was 1.12:1, it was not found statistically significant [p>0.05]. The mature females were determined to spawn successively at least two eggs each batch. HSI values were estimated not to have significant differences between males and females [P>0.05].

Tam Metin:



Muus, B.J., Nielsen, J.G., Nordsee Meeresfische Europas, Ostsee und Atlantik Die. Stuttgart [Kosmos-Naturführer], 336 (1999).

Whithead, P.J.P., Bauchot, M.L., Hureau, J.C., Nilsen, J., Tortonese., Fishes of the North-Eastern Atlantic and the Mediterranean, Vol.1, Paris, Unesco, 510 (1984).

Compagno, L.J.V., Checklist of living elasmobranchs. In: W.C. Hamlett [ed.] Sharks, skates, andrays: the biology of elasmobranch fishes. John Hopkins Univ. Press, Maryland, 471-498, (1999).

Capapéa, C., Mnasri Sioudib, N, El Kamel Moutalibib, O, Boumaïzab, M, Ben Amorc, MM, Reynaudd, C., Production, Maturity, Reproductive Cycle and Fecundity of SmallSpotted Catshark, Scyliorhinus canicula [Chondrichthyes: Scyliorhinidae] from the Northern Coast of Tunisia [Central Mediterranean]. Journal of Ichtyology, 54, 1, 111–126, (2014).

Erdogan Z.A, Koç H.T, Çakır D.T, Nerlović, V., Dulčić, J., Sexual dimorphism in the small-spotted catshark, Scyliorhinus canicula [L. 1758], from the Edremit Bay [Turkey]. Series History Nature, 14, 2, 165-169, (2004).

Cihangir B, Unlüoğlu A, Tırasın M.E., 1997. Distribution and some biological aspects of lesser spotted catshark [Chondrichtyes, Scyliorhinus canicula, Linnaeus,1758] in northern Aegean Sea. Mediterranean Fish. Congress 1997, 585-603, (1997).

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

Torcu H, Aka Z., A Study on the Fishes of Edremit Bay [Aegean Sea]. Turkish Journal of Zoology, 4, 45–61, (2000).

Kabasakal H., Elasmobranch species of the seas of Turkey. Annales Series History Nature, 12, 1, 15-22, (2002).

Avsar, D., Fishery biology and population dynamics, Akademisyen Press, Adana, 303, (2016).

Capapé C, Reynaud C, Vergne Y, Quignard J.P., Biological observations on the smallspotted catshark Scyliorhinus canicula [Chondrichthyes: Scyliorhinidae] off the Languedocian coast [southern France, northern Mediterranean]. Pan-American Journal of Aquatic Sciences, 3, 3, 282-289, (2008).

Rodriquez-Cabello C., Velasco F., Olasa I., Reproductive biology of the lesser spotted dogfish Scyliorhinus canicula [L. 1758] in the Cantabrian Sea. Science Marina, 62, 3, 187-191, (1998).

Nunes D.M, Hartz M.S., Feeding Dynamics and Ecomorphology of Oligosarcus jenynsii [Gunther, 1864] and Oligosarcus robustus [Menezes, 1969] in the Lagoa Fortaleza.”, Southern Brazil, Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Sul, Brasil, Brazilian Journal of Biology, 1-13, (2001).

Papaconstantinou C., Tsimenides N., Some uncommon fishes from the Aegean Sea, Cybium, 7, 3-14, (1979).

Filiz H, Bilge G., Length-weight relationships of 24 fish species from the north Aegean Sea, Turkey. Journal of Applied Ichthyology, 20, 431-432, (2004).

Filiz H., Taskavak E., Sexual dimorphism in the head, mouth and body morphology of the smallspotted catshark, Scyliorhinus canicula [Linnaeus, 1758] [Chondrichthyes: Scyliorhinidae] from Turkey. Acta Adriatica, 47, 1, 37 – 47, (2006).

D’Onghia G., Matarrese A., Tursi A., Sion L., Observations on the depth distribution pattern of the smallspotted catshark in the North Aegean Sea, Journal of Fish Biology, 47, 3, 421–426, (1995). doi: 10.1111/j.1095-8649.1997.tb01911.x.

Kousteni V., Kontopoulou M., Megalofonou P., 'Sexual maturity and fecundity of Scyliorhinus canicula [Linnaeus, 1758] in the Aegean Sea, Marine Biology Research, 6, 4, 390-398, (2010). :doi: 10.1080/174.

Ellis J.R, Shackley S.E., The reproductive biology of Scyliorhinus canicula in the Bristol Channel, U.K. J of Fish Biol. 51: 361-372, (1997).

Capape C., Tomasini J.A., Boucereau J.L., Aspects of the reproductive biology of the small spotted dogfish Scyliorhinus canicula [Linnaeus,1758] [Pisces, Scyliorhinidae] from of the Gulf of Lion [southern France]. Ichtyology Acta, 14, 87-109, (1991).

Compagno L.J.V., Sharks of the world: annonated and illustrated guide of shark species known to date. Part 2, Charcarhiniformes. FAO Fisheries Synopsis 125, 4, 251-655, (1984).

Ivory P., Jeal F., Nolan C.P., Age determination, growth and reproduction in the lesser-spotted dogfish, Scyliorhinus canicula (L.), Journal Northwest Atlantic Fisheries Science, 34, 89-106, (2004).

Sanchez F., Gandara D.L., Gancedo R., Atlas de los peces demersales de Galicia el Cantabrico. Otono 1991-1993. Publicaciones Especiales Instituto Espanol de Oceanografia, Madrid, Spain [20], 100, (1995).

Carbonell A., Alemany F., Merella P., Quetglas A., Roman E., The by-catch of sharks in the western Mediterranean [Balearic Islands] trawl fishery. Fisheries Research, 61, 7–18, (2003).

Abella A.J., Serena F., Comparison of Elasmobranch Catches from Research TrawlSurveys and Commercial Landings at Port of Viareggio, Italy, in the Last Decade, Journal of Northwest Atlantic Fisheries Science, 37, 345-356, (2005), doi: 10.2960/J.v35.m526.

Bendiab A.A.T, Mouffok S., Zitouni Boutiba Z., Reproductive biology and growth of Lesser Spotted Dogfish Scyliorhinus canicula [Linnaeus, 1758] in Western Algerian coasts [Chondrichthyes, Scyliorhinidae], Biodiversity, 3, 1, 41-48, (2012).

Geldiay R., 1969. Main fishes of Izmir Bay and probable invasions, Univ. of Ege, Faculty of Science, Monography Seri 11, 135, (1969).

Aksiray F., Marine fishes of Turkey with pictorial keys to the species. Turkish edit. II. Istanbul Univ. Press, 3490, 811, (1987).

Türker-Cakir D., Torcu-Koc H., Basusta A., Basusta N., Length-Weight Relationships of 24 fısh species from Edremit Bay Aegean Sea. Natural and Applied Fisheries Sciences. e-J of New World Sciences Academy, 3,1, 47-51, (2008).

Ricker W.E., Computation and interpretation of biological statistics of fish populations, Bulletin Research Fisheries Board of Canada, 191, 382, (1975).

Demirel N., Dalkara E.M., 2012. Weight−length relationships of 28 fish species in the Sea of Marmara. Turkish Journal Zoology, 36, 6, 785-791, (2012).

Nikolsky G.W., Theory of fish population dynamics. Bishen Sigh Mahedra Pal Singh, India and Ottocoelthz Science Publishers [W. Germany], 317, (1980).

Mellinger J, 1983. Egg-case diversity among dogfish, Scyliorhinus canicula [L. 1758]: a study of egg laying rate and nidamental gland secretory activity. Journal of Fish Biology, 22: 83-90, (1983).

Türker Çakır D., Torcu Koç H., Erdoğan Z., Some biological aspects of the lesser spotted dogfish Scyliorhinus canicula (Linnaeus, 1758) in Edremit Bay ( the Northern Aegean Sea) Turkey. Turkey. Proceedings of the International Workshop on Mediterranean Cartilaginous Fish with Emphasis on SouthernEast of Mediterranean, 14-16 Oct. 06, Istanbul-Turkey: 17-27, (2006).

Craik J.C.A., An annual cycle of vitellogenesis in the elasmobranch Scyliorhinus canicula, Journal of Marine Biological Association. UK, 58: 719-726, (1978).

Oddone M.C., Velasco G., Relationships between liver weight and body size throughout the year in Atlantoraja cyclophora [Elasmobranchii: Rajidae: Arhynchobatinae] and it's connection with reproduction. Neotropical Biology and Conservation, 1, 1, 12-16, (2006).

Capapé, C., Contribution à la biologie des Scyliorhinidæ des côtes tunisiennes. II. Scyliorhinus canicula Linné, 1758: régime alimentaire, Annales Institute Michel Pacha, 7, 13–29, (1974).

Olivereau M., Leloup M., Variations du rapport hépatosomatique chez la roussette [Scyllium canicula L.] au cours du développement et de la reproduction, Vie Milieu, 1, 3, 377–420, (1950).

IUCN., The IUCN Red List of Threatened Species. Version 2017-1. Downloaded on 18 May 2017, (2017).


  • Şu halde refbacks yoktur.

Telif Hakkı (c) 2018 Hatice Torcu Koç, Zeliha Erdoğan

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.