Round goby (Neogobius melanostomus, Pallas 1814) which belongs to Gobiidae, inhabits in the Black Sea, the Marmara Sea, the Caspian Sea and the rivers that flows into fore stated seas. The main population parameters, such as age, length, sexual composition, length-weight relationship, growth, condition factor, gonadosomatic index and reproduction of N. melanostomus were investigated from coasts of the southern Black Sea in this study. A total of 2408 individuals were sampled between July 2017 and June 2018. Results showed that average length and weight were found 14.97 cm (10.50-26.20) and 43.90 g (15.28-212.2), respectively. Sex ratio between female and male was found 1:1.77 (P>0.05). Age of samples varied between one and eight years old. The von Bertalanffy growth parameters were calculated as L∞ = 26.5 cm, k = 0.1980 year-1 and t0 = -1.3487 year for all individuals. The length-weight relationship was found as W = 0.0069 TL3.1972 for all individuals. Total mortality, natural mortality, fishing mortality, growth performance index and condition factor were calculated as 0.625, 0.479, 0.145, 2.143, and 1.66, respectively. Spawning occurs between March and May and the maximum value of gonadosomatic index reached in April. Average relative fecundity was 318.88 number/g (124.8-958.9), while average diameter of eggs was found 2025.58 µm ± 262.86 (1112.0-2703.4). This study will contribute for information gap on the species as well as provide information source for future studies.
Abdoli, A., Allahyari, S., Kiabi, B. H., Patimar, R., Ghelichi, A., Mostafavi, H., Aghili, S. M. & Rasooli, P. (2009). Length-weight relationships for seven Gobiid fish species in the southeastern Caspian Sea basin, Iran. Journal of Applied Ichthyology, 25: 785-786.
Ak, O., Kutlu, S. & Aydın, İ. (2009). Length-weight relationship for 16 fish species from the Eastern black Sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 9: 125-128.
Berg, L. S. (1949). Freshwater fishes of the USSR and adjacent countries. Acad. Sci. USSR Zool. Inst. 850 pp.
Beverton, R. J. H. & Holt, S. J. (1957). On the dynamics of exploited fish populations. Fisheries Investigations, 19: 1-533.
Çalık S. & Erdoğan Sağlam, N. (2017). Length-weight relationships of demersal fish species caught by bottom trawl from Eastern Black Sea (Turkey). Cahiers de Biologie Marine, 58: 485-490.
Charlebois, P. M., Marsden, J. E., Goettel, R. G., Wolfe, R. K., Jude, D. J. & Rudnicka, S. (1997). The round goby, Neogobius melanostomus (Pallas), a review of European and North American literature. Illinois-Indiana Sea Grant Program and Illinois Natural History Survey. INHS Special Publication No: 20. 76 p.
Devlaming, V., Grossman, G. & Chapman, F. (1982). On the use of the gonadosomatic index. Comparative Biochemistry and Physiology Part A: Physiology, 73(1): 31–39. https://doi.org/10.1016/0300-9629(82)90088-3
Demirhan, S. A. & Can, M. F. (2007). Length-weight relationships for seven fish species from the southeastern Black Sea. Journal Applied Ichthyology, 23: 282-283.
Engin, S. (2008). Bio-ecological characteristic of some gobies Neogobius platyrostris (Pallas, 1814), Neogobius melanostomus (Pallas, 1814), Gobius paganellus Linnaeus, 1758 and Gobius cobitis Pallas, 1814 in the south eastern Black Sea rocky shore coastal ecosystem. PhD Thesis, Trabzon, Turkey: Karadeniz Technical University, 198 pp. (in Turkish).
Engin, S. & Bektaş, Y. (2010). Morphologic and habitat characteristics of Black Sea’s endemic goby Neogobius platyrostris (Gobiidae). Turkish Journal of Fisheries and Aquatic Sciences, 10(2): 263-267.
Froese, R. & Pauly, D. (2009). FishBase. World Wide Web electronic publication. http://www.fishbase.org, version (09/2009).
Gözler, A. M., Çiloğlu, E., Şahin, C. & Engin, S. (2003). A study on some population parameters of Neogobius melanostomus (Pallas, 1811) in the Eastern Black Sea. Proceedings of the XII. National Fisheries Symposium, Elazığ, Turkey. pp. 51-55
Gulland, J. A. (1969). Manual of methods for fish stock assessment. Part I. Fish population analysis. FAO Manual on Fisheries Sciences, 4: 44.
Gulland, J. A. (1988). Fish population dynamics, the implications for management. (Second Ed.), John Wiley and Sons, Chichester, 422 pp.
Gümüş, A. & Kurt, A. (2009). Age structure and growth by otolith interpretation of Neogobius melanostomus (Gobiidae) from Southern Black Sea. Cybium, 33(1): 29-37.
Holden, M. J. & Raitt, D. F. S. (Eds.) (1974). Manual of fisheries science. Part 2: Methods of resource investigation and their application. FAO Fisheries Technical Report 115(Rev. 1), Rome, Italy.
Hôrková, K. & Kováč, V. (2014). Different life-histories of native and invasive Neogobius melanostomus and the possible role of phenotypic plasticity in the species’ invasion success. Knowledge and Management of Aquatic Ecosystems, 412: 1-11. https://doi.org/10.1051/kmae/2013081
Jude, D. J. & De Boe, S. F. (1996). Possible impacts of gobies and other introduced species on habitat restoration efforts. Canadian Journal of Fisheries and Aquatic Science, 53: 136-141.
Kasapoğlu, N. (2016). Age, growth and mortality rates of discard species (Uranoscopus scaber, Neogobius melanostomus and Gobius niger) in the Black Sea. Ege Journal of Fisheries and Aquatic Sciences, 33(4): 397-403.
Kazancheev, E. N. (1981). Fishes of the Caspian Sea: A key. Moscow. 168.
King, M. (1995). Fisheries Biology, Assessment and Management, Osney Mead, Oxford OX2 OEL, England.
Kovtun, I. F. (1979). Significance of the sex ratio in the spawning population of the round goby in relation to year-class strength in the Sea of Azov. Journal Ichthyology, 19: 161-163.
Kurt, A. (2005). The determination of ageing methods and growth parameters of round goby, Neogobius melanostomus (Pallas, 1814) (Gobidae) inhabiting the Black Sea. MSc. Thesis, Ondokuz Mayıs University, Samsun, Turkey.
Lavrincikova, M. & Kovac, V. (2007). Invasive round goby Neogobius melanostomus from the Danube mature at small size. Journal Applied Ichthyology, 23: 276–278
Lodge, D. M. (1993). Species invasions and deletions: Community effects and responses to climate and habitat change. In: Kareiva, P. M., Kingsolver, J. G. & Hurey, R. B. (Eds). Biotic interactions and global change. Sinauer Associates, Sunderland, MA. pp. 367–387.
Macinnis, A. J. & Corkum, L. D. (2000). Age and growth of round goby Neogobius melanostomus in the Upper Detroit River. Transaction of the American Fisheries Society, 129(3): 852-858.
Macun, S. (2017). The growth and reproduction characteristics of Neogobius melanostomus populations in its native habitat of Lake Karaboğaz (Black Sea, Turkey). Hacettepe Journal of Biology and Chemistry, 45(4): 617-628.
Miller, P. J. (1986). Gobiidae. In: Whitehead, P. J. P., Bauchot, M. L., Hureau, J. C., Nielsen, J. & Tortonese E. (Eds.), Fishes of the North-Eastern Atlantic and the Mediterranean. Vol. 3, UNESCO, Paris.
Moskal’kova, K. I. (1996). Ecological and morphophysiological prerequisites to range extention in the round goby Neogobius melanostomus under conditions of anthropogenic pollution. Journal of Ichthyology, 36: 584-590.
Nelson, J. S. (1994). Fishes of the World. New York: John Wiley.
Nikolskii, G. V. (1954). Special ichthyology. Sovetshkaya nauka (Translated from Russian by the Israel Program for Scientific Translations), Jerusalem. 538p.
Nikolskii, G. V. (1980). Theory of fish population dynamics as the biological background for ration exploitation and management of fisheries resources. Bishen Singh Mahendra Pal Singh Dehradun India and Otto Koeltz Science Publishers Koenigstein, W. Germany, 326 p.
Öztürk, B. (1998). Black Sea biological diversity Turkey. United Nations Publications Sales No. E.99.III. R.1. Black Sea Environmental Series, Volume 9. New York, 128 p.
Pauly, D. & Munro, J. L. (1984). Once more on the comparison of the growth in fish and invertebrates, ICLARM Fishbyte, 2(1): 21.
Pauly, D. (1980). On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. ICES Journal of Marine Science, 39(2): 175-192. https://doi.org/10.1093/icesjms/39.2.175
Pauly, D. (1984). Fish population dynamics in tropical water: a manual for use with programme calculators. ICLARM Studies and Reviews, 8: 325 p.
Ricker, W. E. (1975). Computation and interpretation of biology statistics of fish populations. Bulletin of the Fisheries Research Board of Canada, 191: 382.
Samsun, O. (1995). Samsun Körfezi’nde 1994-1995 avlanma sezonunda dip trolleri ile avlanan kaya balığının (Gobius melanostomus Pallas, 1811) bazı balıkçılık biyolojisi parametrelerinin araştırılması. Doğu Anadolu Bölgesi I. ve II. Su Ürünleri Sempozyumu. 661-672. (In Turkish).
Sapota, M. R. (2012). NOBANIS – Invasive alien species fact sheet – Neogobius melanostomus. – from: Online database of the European Network on invasive alien species – NOBANIS www.nobanis.org, Date of access 30/07/2018.
Sezgin, M., Bat, L., Ürkmez, D., Arıcı, E. & Öztürk, B. (2017). Black Sea marine environment: The Turkish shelf. 46. TUDAV, İstanbul.
Skora, K., Olenin, S. & Gollasch, S. (1999). Neogobius melanostomus (Pallas, 1811) (pp. 69-73). In Gollasch, S., Michin, D., Rosenthal, H. & Voight, M. (Eds.) Case histories on introduced species: Their general biology, distribution, range expansion and impact. Logos Verlag Berlin.
Skora, K. E. & Stolarski, J. (1993). New fish species in the Gulf of Gdansk Neogobius sp. Neogobius melanostomus (PALLAS, 1811). Bulletin of the Sea Fisheries Institute, 1: 83-84.
Skora, K.E. & Stolarski, J. (1996). Neogobius melanostomus (Pallas 1811) a new immigrant species in Baltic Sea. Proceedings of the Second International Estuary Symposium, Gdańsk, Poland. MBC Gdynia, 1: 101-108.
Slastenenko, E. (1956). Black Sea Fishes, E.B.K, Istanbul, 711 p.
Sparre, P. & Venema, S. C. (1992). Introduction to Tropical Fish Stock Assessment. Part I. Manual. FAO Fisheries Technical Paper No.306, 376p.
Velkov, B., Vassilev, M. & Apostolou, A. (2014). Growth, age and size structure of the round goby (Neogobius melanostomus) from its main habitats in Bulgarıan waters. Proceedings of the HydroMedit 2014, Volos, Greece. pp. 466-471.
Yankova, M., Raykov, V., Ivanova, P., Diasamidze, R., Mgeladze, M., Radu, G., Nicolaev, S., Agapov, S., Grinchenko, M., Oral, M., Düzgunes, E., Özturk, B., Bat, L., Karpova, E., Shlyakhov, V. & Boltachev, A. (2011). Black Sea fishes list, IUCN Status. Bulgaria, Georgia, Romania, Russian Federation, Turkey, Ukraine. Istanbul: Black Sea Commission Publications.