[صفحه اصلی ]   [Archive]  
:: صفحه اصلي :: درباره نشريه :: آخرين شماره :: تمام شماره‌ها :: جستجو :: ثبت نام :: ارسال مقاله :: تماس با ما ::
:: دوره 8، شماره 2 - ( 4-1388 ) ::
جلد 8 شماره 2 صفحات 163-174 برگشت به فهرست نسخه ها
Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran)
چکیده:   (1257 مشاهده)
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. 
متن کامل [PDF 3070 kb]   (344 دریافت)    
نوع مطالعه: پژوهشي | موضوع مقاله: Biology & physiology
دریافت: ۱۳۹۶/۹/۱۴ | پذیرش: ۱۳۹۶/۹/۱۴ | انتشار: ۱۳۹۶/۹/۱۴
ارسال نظر درباره این مقاله
نام کاربری یا پست الکترونیک شما:

CAPTCHA


XML   English Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Patimar R. Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran). IJFS. 2009; 8 (2) :163-174
URL: http://jifro.ir/article-1-3073-fa.html

Some biological parameters of Silver Crucian carp, Carassius auratus, in the international wetlands of Alma-Gol and Ala-Gol (Golestan Province, Iran). مجله علوم شیلاتی ایران. 1388; 8 (2) :163-174

URL: http://jifro.ir/article-1-3073-fa.html



دوره 8، شماره 2 - ( 4-1388 ) برگشت به فهرست نسخه ها
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.06 seconds with 32 queries by YEKTAWEB 3991