Some biological properties of Kura goby, Ponticola cyrius (Kessler, 1874) (Gobiiformes, Gobiidae) from Kura River, Turkey

Erdogan Cicek, Selda Öztürk, Sevil Sungur


This work presents some biological properties, including length-frequency, length-weight relationships, Fulton’s condition factor, growth parameter, and growth performance and mortality indices of Kura goby, Ponticola cyrius. A total of 73 specimens were collected from the Çot Creek a tributary of Kura River, from May to September 2015. Age of P. cyrius varied from 0 to III age with age group I as the most frequent (56.16%). The total length and weight ranged 4.3-16.4 cm, and 1.10-50.10 g, respectively. The length-weight relationship was W=0.0145L2.9795 with b-value indicating isometric growth pattern. The estimated von Bertalanffy growth parameters are L¥ = 26.36 cm, k = 0.187 year-1 and to = -1.33 year. Growth performance index (Φ') and mean Fulton’s condition factor were estimated as 2.115 and 1.43, respectively. Instantaneous rate of total, natural and fishing mortalities were 0.588, 0.371 and 0.217 year-1, respectively and the exploitation rate was calculated as 0.369.


Growth parameters, Ardahan, Çot Creek, Caspian Sea.

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Balon E.K. (1984). Reflections on some decisive events in the early life of fishes. Transactions of the American Fisheries Society, 113: 178-185.

Berg L.S. (1965). Freshwater fishes of the U.S.S.R. and adjacent countries. Volume 3, 4th edition. Israel Program for Scientific Translations Ltd, Jerusalem. (Russian version published 1949).

Chang W.Y.B. (1982). A statistical method for evaluating the reproducibility of age determination. Canadian Journal of Fisheries and Aquatic Sciences, 39: 1208-1210.

Çiçek E., Birecikligil S. (2016). Ichthyofauna of the Turkish parts of Kura-Aras River Basin. FishTaxa, 1: 14-26.

Çiçek E., Birecikligil S., Fricke R. (2015). Freshwater fishes of Turkey; a revised and updated annotated checklist. Biharean Biologist, 9: 141-157.

Coad B.W. (2018). Freshwater Fishes of Iran. Revised: Accessed 10.10.2018.

Freyhof J. (2014). Ponticola cyrius. The IUCN Red List of Threatened Species 2014: e.T19513722A19849649. 513722A19849649.en. Downloaded on 10 October 2019.

Kuru M. (1975). Dicle-Fırat, Kura-Aras, Van Gölü ve Karadeniz Havzası tatlısularında yaşayan Balıkların (Pisces) Sistematik ve Zoocoğrafik Yönden İncelenmesi. Doçentlik Tezi, Atatürk Üniversitesi, Erzurum, 181 p. (In Turkish)

Nikmehr N., Eagderi S., Poorbagher H. (2018). Taxonomic statue of P. Iranicus based on COI cytochrome gene. Journal of Applied Biological Sciences, 12(2): 49-51.

Nikmehr N., Eagderi S., Poorbagher H., Abbasi K. (2019). Morphological variation of Ponticola iranicus in the Anzali wetland drainage. Journal of Wildlife and Biodiversity, doi: 10.22120/jwb.2019.114328.1089

Pauly D. (1980). On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. Conseil International pour l'Exploration de la Mer, 39: 175-192.

Pauly D., Munro J.L. (1984). Once more on the comparison of growth in fish and invertebrates. Fishbyte, 2: 21.

Sparre P., Venema S.C. (1998). Introduction to tropical fish stock assessment. Part 1. Manual. FAO Fisheries Technical Paper. No. 306.1 Rev.2, Rome, FAO. 407 p.

van der Laan R. (2019). Freshwater fish list. 27th. edition. Almere, the Netherlands, 20.8.2019.

Vasilieva E.D., Vasiliev V.P. (2003). Mugilidae, Atherinidae, Atherinopsidae, Blenniidae, Odontobutidae, Gobiidae 1. In: Miller P.J. (ed.). The freshwater fishes of Europe. 8/I. Aula, Wiebelsheim.

Vasil'yeva Ye.D., Vasil'yev V.P. (1995). Systematics of Caucasian freshwater gobies (Gobiidae) in the light of contemporary data, with a description of a new species, Neogobius rhodioni, sp. nov. Journal of Ichthyology, 35(2): 139-157.

Vasil’eva E.D., Mousavi-Sabet H., Vasil’eva V.P. (2015). Ponticola Iranicus sp. Nov. (Actinopterygii: Perciformes: Gobiidae) From the Caspian Sea Basin. Acta Ichthyologica et Piscatoria, 45(2): 189-194.

Asadi H., Sattari M., Motalebi Y., Zamani-Faradonbeh M., Gheytasi A. 2017. Length-weight relationship and condition factor of seven fish species from Shahrbijar River, Southern Caspian Sea basin, Iran. Iranian Journal of Fisheries Sciences, 16(2): 733-741.

Zamani Faradonbeh M., Eagderi S., Ghojoghi F. 2015. Length-weight relationship and condition factor of seven fish species of Totkabon River (southern Caspian Sea basin), Guilan, Iran. International Journal of Aquatic Biology, 3(3): 172-176.


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