Journal of Fisheries Science and Technology

Journal of Fisheries Science and Technology

Study on Age, growth and sex ratio of Tench Tinca tinca (Linnaeus, 1758) in Anzali wetland

Authors
Amirali Moradinasab 1
Hojjat Ahmadi Fackjour 2
Ehsan Kamrani 3
masoud Sattari 4
Ali Ghasemi 5
Mahmoud Tavakoli 6
Sarah Haghparast 7
1 Ph. D. student of Fisheries, Faculty of Marine Science and Technology, Hormozgan University, Bandar Abbas. Iran
2 Graduated M. Sc. of Fisheries, Islamic Azad University, Lahijan Branch, Lahijan, Iran.
3 Associate prof., Dept. of Fisheries, Faculty of Marine Sciences and Technologies, Hormozgan University, Bandar Abbas, Iran.
4 Associate prof., Dept. of Fishery, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Iran.
5 Graduated B. Sc. of Fisheries, Mirza Kouchak Khan Higher Education Fisheries Center, Rasht, Iran.
6 International Sturgeon Research Institute (Areeo), Rasht, Iran
7 Department of Fisheries, Faculty of Animal Sciences and Fisheries, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
Abstract
Growth, sex ratio and age of 188 specimens of Tench, Tinca tinca, from Anzali wetland were recorded during Nov. 2013 to June 2014. The age range of fish was 0+ to 6+ years. Male to female sex ratio was 1:1.7 that differed significantly (P<0.05). Maximum total length (TL) and weight (W) was 40.7 cm and 1000g, respectively. The b value of the length-weight relationship was 2.70 that showed negative allometric growth (p<0.05). The growth performance index (ϕ) was calculated as 2.61. The estimated von Bertalanffy growth parameters were (L∞= 47.48 cm, k= 0.18 yr- and t0= -1.07 yr). Tmaxwas calculated 16.41 years. Also infinity weight (W∞) was estimated as 1261.43 g. The present investigation provides basic information about population structure of Tench (T. tinca) in Anzali wetland.
Keywords
Tinca tinca
Tench
Growth
Age
Anzali wetland
Journal of Fisheries Science and Technology
Volume 6, Issue 1 - Serial Number 18
Spring 2017
Pages 119-126