Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran)
In the present study, age, growth and reproduction of Carassius auratus were investigated in the Alma-Gol and Ala-Gol (northern Iran) from September 2000 to August 2002. Among the total of 1450 specimens, the estimated ages ranged from 0+ to 8+ years. C. auratus showed an allometric growth, negatively in Alma-Gol and positively in Ala-Gol. The von Bertalanffy growth curves were fitted to mean total lengths at age, resulted as Ltmales=183.33(1-e-0.31(t+1.05)) and Ltfemale=245.66(1-e-0.19(t+1.21)) for Alma-Gol population and Ltmale=224.79(1-e-0.24(t+0.83)) and Ltfemale=242.80(1-e-0.23(t+0.80)) for Ala-Gol population. The value of f’ index varied from 9.25 to 9.51. The unbalanced sex ratio of males to females was 1:10 and 1:12.7 in Alma-Gol and Ala-Gol, respectively. The reproductive period for this species in these particular areas was February, March and April and the maximum recorded GSI was 2.19 and 2.17 for males and 10.37 and 10.49 for females in Alma-Gol and Ala-Gol, respectively. The linear relationship between absolute fecundity and total weight was more suitable for expressing the fecundity-weight relationship for both populations as estimated: Fec.Alma-Gol= 4120.56+ 62.62W and Fec.Ala-Gol= 3832.83+ 68.67W.
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Format: | Journal Contribution biblioteca |
Language: | English |
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2009
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Subjects: | Silver carp, Carassius auratus, Biology, Wetland, Growth, Sex, |
Online Access: | http://hdl.handle.net/1834/11202 |
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dig-aquadocs-1834-112022021-05-19T06:43:34Z Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) Patimar, R. Silver carp Carassius auratus Biology Wetland Growth Sex In the present study, age, growth and reproduction of Carassius auratus were investigated in the Alma-Gol and Ala-Gol (northern Iran) from September 2000 to August 2002. Among the total of 1450 specimens, the estimated ages ranged from 0+ to 8+ years. C. auratus showed an allometric growth, negatively in Alma-Gol and positively in Ala-Gol. The von Bertalanffy growth curves were fitted to mean total lengths at age, resulted as Ltmales=183.33(1-e-0.31(t+1.05)) and Ltfemale=245.66(1-e-0.19(t+1.21)) for Alma-Gol population and Ltmale=224.79(1-e-0.24(t+0.83)) and Ltfemale=242.80(1-e-0.23(t+0.80)) for Ala-Gol population. The value of f’ index varied from 9.25 to 9.51. The unbalanced sex ratio of males to females was 1:10 and 1:12.7 in Alma-Gol and Ala-Gol, respectively. The reproductive period for this species in these particular areas was February, March and April and the maximum recorded GSI was 2.19 and 2.17 for males and 10.37 and 10.49 for females in Alma-Gol and Ala-Gol, respectively. The linear relationship between absolute fecundity and total weight was more suitable for expressing the fecundity-weight relationship for both populations as estimated: Fec.Alma-Gol= 4120.56+ 62.62W and Fec.Ala-Gol= 3832.83+ 68.67W. Published 2018-02-11T19:52:35Z 2018-02-11T19:52:35Z 2009 Journal Contribution Refereed 1562-2916 http://hdl.handle.net/1834/11202 en pp.163-174 Iran Golestan Province Ala-Gol Lake Alma-Gol Lake |
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Silver carp Carassius auratus Biology Wetland Growth Sex Silver carp Carassius auratus Biology Wetland Growth Sex Patimar, R. Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) |
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In the present study, age, growth and reproduction of Carassius auratus were investigated in the Alma-Gol and Ala-Gol (northern Iran) from September 2000 to August 2002. Among the total of 1450 specimens, the estimated ages ranged from 0+ to 8+ years. C. auratus showed an allometric growth, negatively in Alma-Gol and positively in Ala-Gol. The von Bertalanffy growth curves were fitted to mean total lengths at age, resulted as Ltmales=183.33(1-e-0.31(t+1.05)) and Ltfemale=245.66(1-e-0.19(t+1.21)) for Alma-Gol population and Ltmale=224.79(1-e-0.24(t+0.83)) and Ltfemale=242.80(1-e-0.23(t+0.80)) for Ala-Gol population. The value of f’ index varied from 9.25 to 9.51. The unbalanced sex ratio of males to females was 1:10 and 1:12.7 in Alma-Gol and Ala-Gol, respectively. The reproductive period for this species in these particular areas was February, March and April and the maximum recorded GSI was 2.19 and 2.17 for males and 10.37 and 10.49 for females in Alma-Gol and Ala-Gol, respectively. The linear relationship between absolute fecundity and total weight was more suitable for expressing the fecundity-weight relationship for both populations as estimated: Fec.Alma-Gol= 4120.56+ 62.62W and Fec.Ala-Gol= 3832.83+ 68.67W. |
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Journal Contribution |
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Silver carp Carassius auratus Biology Wetland Growth Sex |
author |
Patimar, R. |
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Patimar, R. |
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Patimar, R. |
title |
Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) |
title_short |
Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) |
title_full |
Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) |
title_fullStr |
Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) |
title_full_unstemmed |
Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran) |
title_sort |
some biological parameters of silver crucian carp, carassius auratus, in the international wetlands of alma-gol and ala-gol (golestan province, iran) |
publishDate |
2009 |
url |
http://hdl.handle.net/1834/11202 |
work_keys_str_mv |
AT patimarr somebiologicalparametersofsilvercruciancarpcarassiusauratusintheinternationalwetlandsofalmagolandalagolgolestanprovinceiran |
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