Growth parameters and mortality rate of Neogobius caspius (Eichwald, 1831) in southern part of the Caspian Sea (Teleostei: Gobiidae)



In the present work, due to the lack of information on population dynamics of the Caspian goby, Neogobius caspius, we aimed to investigate growth and mortality parameters of this species captured from the south part of the Caspian Sea (Mazandaran Province) during a year from April 2014 until March 2015. Growth and mortality rates were assessed using age calculation. By using least squared method, L and K of the specimens were 16.83 cm and 0.67 year-1 in female specimens and 17.76 cm and 0.83 year-1 in male specimens, respectively. Comparison of the growth curves resulted by likelihood ratio method showed a significant difference between two sexes (P<0.05). The maximum estimated age for female was 4.47 years old while 3.61 year for male. According to Pauli’s empirical equation, natural mortality rate was calculated 1.25 and 1.41 year-1 for female and male, respectively. Sex ratio (male: female) was 1: 1.14 indicating no significant difference (P>0.05). Based on the results presented here, the present investigation can be regarded as basis for future studies on Caspian goby.



Weight-length, Age-length, L∞, Growth parameter, Age-weight.

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Abbasi, K.; Sarpanah, A.; Abdol Al Maleki, S.; Kiyabi, B.; Khanipour, A.A.; Sabk Ara, J.; Makaremi, M.; Babaei, H.; Bagheri, S.; Mahi Sefat, F. & Sokra, M. 2009. Study on distribution and biology of the Caspian goby Neogobius caspius (Eichwald, 1831) captured from Guilan coasts. Iranian Fisheries Science and Research Institute publications.

Abdoli, A. & Naderi, M. 2008. Biodiversity of fishes of the Southern Basin of the Caspian Sea. Aquatics Scientific Publications, Tehran.

Abdoli, A.; Allahyari, S.; Kiabi, B.H.; Patimar, R.; Ghelichi, A.; Mostafavi, H.; Aghili, S.M. & Rasooli, P. 2009. Length–weight relationships for seven Gobies in the southeastern Caspian Sea basin, Iran. Journal of Applied Ichthyology 25: 785-786.

Abou-Seedo, F.S. & Dadzie, S. 2004. Reproductive cycle in the male and female grey mullet, Liza klunzingeri in the Kuwaiti waters of the Persian Gulf. Cybium 28:97-104.

Biswas, S. P. 1993. Manual of methods in fish biology. The South Asian publishers Ptyltd. 3 Nejati subhoshmary. Daryagam, New Dehli, India.

Esmaeili, H.R.; Brian, W.C.; Mehraban, H. R.; Masoudi, M.; Khaefi R.; Abbasi, K.; Mostafavi, H. & Vatandoust, S. 2014. An updated checklist of fishes of the Caspian Sea basin of Iran with a note on their zoogeography. Iranian Journal of Ichthyology 1(3): 152-184.

Froese, R. 2006. Cube law, condition factor and Length-Weight relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology 22: 241-253.

Froese, R. & Pauly, D. 2011. World Wide Web electronic, version (09/2011). Summary information on Gobiid fishes.

Froese, R. & Pauly, D. 2013. Species of Neogobius in FishBase. June 2013 version.

Froese, R & Pauly, D. 2016. FishBase. January 2016 version.

Gayanilo, F.C. & Pauly, D. 1997. Computed information series fisheries, FAO-ICLARM stock assessment tools. Reference manual, Rome, Italy.

Gulland, J.A. & Holt, S. J. 1959. Estimation of growth parameters for data at unequal time intervals. ICES Journal of Marine Science 25: 47-49.

Haddon, M. 2011. Modeling and quantitative methods in fisheries. 2nd edition. CRC Press, Taylor & Francis Group, New York.

Holcik, J. 1986. The Freshwater Fishes of Europe, Vol. 1, Part I. Petromyzontiformes. Aula-Verlag, Wiesb aden, Germany.

Jennings, S.; Kaiser, M.J. & Reynolds, D. 2002. Marine Fish Ecology. Blackwell Science Ltd.

Jouladeh-Roudbar, A.; Vatandoust, S.; Eagderi, S.; Jafari-Kenari, S. & Mousavi-Sabet, H. 2015. Freshwater fishes of Iran; an updated checklist. AACL Bioflux 8: 855-909.

Jones, R. 1981. The use of length composition data in fish stock assessments (with notes on VPA and cohort analysis). FAO Fish. Circ. (734):55 p. Issued also in French and Spanish.

Kiabi, B.; Abdoli, A. & Naderi, M. 1999. Status of the fish fauna in the South Caspian Basin of Iran. Zoology in the Middle East 18: 57-65.

King, M. 1995. Fisheries biology assessment and management. Fishing News Book, London, UK.

Mendes, B.; Fonseca, P. & Campos, A. 2004. Weight–length relationships for 46 fish species of the Portuguese west coast. Journal of Applied Ichthyology 20: 355–361.

Mirghiyasi, S.; Esmaeili, H.R. & Nokhbatolfoghahai, M. 2016. Morpho-histological characteristics of gonads and reproductive index in an endemic fish species, Oxynoemacheilus persa (Heckel, 1847) (Teleostei: Nemacheilidae) from Kor River basin, Iran. International Journal of Aquatic Sciences 4: 31-42.

Naderi, M. & Abdoli, A. 2004. Fish species atlas of South Caspian Sea Basin. Iranian Fisheries Research Organization. Tehran.

Nelson, J.S. 2006. Fishes of the World, 3th ed. John Wiley and Sons. New York.

Niamimandi, N.; Fatemi, S. M. & Taghavi, A. 2003. Determination of growth parameters, mortality rate and maximum sustainable yield of croaker fish (Otolithes ruber) captured from Boshehr waters. Quarterly Journal of Research and Construction No. 60: 51-55.

Pauly, D. 1980. On the inter relationships between natural mortality, growth parameters and mean environmental temperature in 175 fish stocks. Journal Du Conseil International Pour L'Exploration De La Mer 39(2): 175-192.

Pauly, D. 1983. Some methods for the assessment of tropical fish stocks. FAO. Fisheries Technical Paper 234, Rome, Italy.

Sarpanah Sarkohi, A.N.; Ghasemzadeh, G.R.; Nezami, S. A.; Shabani, A.; Christianus, A.; Shabanpour, B. & Chi, R.B.S. 2010. Feeding characteristics of Neogobius caspius in the south west coastline of the Caspian Sea (Guilan Province). Iranian Journal of Fisheries Sciences 9(1): 127-140.

Sparre, P. & Venema, S. C. 1998. Introduction to tropical fish stock assessment, part 1. FAO Fisheries Technical Paper, Rome, Italy.

Walters, C. & Steven, J.D. 2004. Fisheries Ecology and Management. Princeton University Press.


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