The study of morphology and some biological aspects of tench, Tinca tinca (Linnaeus, 1758) in Anzali Lagoon

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TIZKAR B.; Zahmatkesh Y.A.; ABBASI K.; Besharati N.

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Journal: JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH Year:2020 | Volume:8 | Issue:3 Page(s): 27-38

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Title

The study of morphology and some biological aspects of tench, Tinca tinca (Linnaeus, 1758) in Anzali Lagoon

Author(s)

TIZKAR B. | Zahmatkesh Y.A. | ABBASI K. | Besharati N. | Issue Writer Certificate

Keywords

Tinca tincaQ1

morphometricQ2

growthQ2

condition factorQ1

FecundityQ2

Anzali LagoonQ2

Abstract

Tench is an economically important Cyprinids species in the Anzali Lagoon, however, the capture fisheries of this species have dramatically decreased in the recent years. The present study aimed to examine certain biological traits of Tench in the Anzali Lagoon. Ninety-six fish were captured by gillnet fishing from January 2006 to July 2007. The findings showed incongruity in 11 out of 36 morphometric traits followed by 1 out of 10 numerical traits between male and female. Body weight of the fish varied from 40. 7 g to 299. 3 g with the mean weight for male and female was 117. 8± 51. 0 g and 117. 8± 54. 4 g, respectively. Fork length ranged from 135. 2 to 255. 7 mm and no significant difference was observed between male (182. 0± 27. 7 mm) and female (181. 9± 23. 6 mm). The male fish age ranged from 2 to 7 years and the female age ranged from 2 to 6 years, the 34 years was the dominant age in both sexes. The male constituted 46. 9 % of the population followed by 53. 1% female, showing no major difference with the standard (1: 1) sex ratio (x 2 =0. 38). In addition, the gradient of the b regression line between the body weight and fork length of male and female were found to be 3. 21 and 2. 99, respectively, with an isometric growth in both sexes. No significant differences were observed in the average condition factor (male: 1. 82± 0. 23; female: 1. 86± 0. 24) and relative condition factor (male: 0. 99± 0. 13; female 1. 01± 13) between male and female. The absolute Fecundity of 24 examined fish varied from 14000 to 154000 with a relative Fecundity falling from 170. 1 to 644. 8 pieces of egg per each gram of the female body weight.

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APA: Copy

TIZKAR, B., Zahmatkesh, Y.A., ABBASI, K., & Besharati, N.. (2020). The study of morphology and some biological aspects of tench, Tinca tinca (Linnaeus, 1758) in Anzali Lagoon. JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH, 8(3 ), 27-38. SID. https://sid.ir/paper/381307/en

Vancouver: Copy

TIZKAR B., Zahmatkesh Y.A., ABBASI K., Besharati N.. The study of morphology and some biological aspects of tench, Tinca tinca (Linnaeus, 1758) in Anzali Lagoon. JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH[Internet]. 2020;8(3 ):27-38. Available from: https://sid.ir/paper/381307/en

IEEE: Copy

B. TIZKAR, Y.A. Zahmatkesh, K. ABBASI, and N. Besharati, “The study of morphology and some biological aspects of tench, Tinca tinca (Linnaeus, 1758) in Anzali Lagoon,” JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH, vol. 8, no. 3 , pp. 27–38, 2020, [Online]. Available: https://sid.ir/paper/381307/en

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