Investigation of Grows Condition of Salmo trutta fario in Lar Reservoir Lake v

Subject Areas : Journal of Animal Biology

سیدمحمد صلواتیان ¹ , کیوان عباسی ² , قباد آذری تاکامی ³ , مهدی مرادی ⁴ , شاهین بختیاری آق مسجد ⁵

1 - پژوهشکده آبزی پروری آبهای داخلی کشور، بندرانزلی، صندوق پستی ۶۶
2 - پژوهشکده آبزی پروری آبهای داخلی کشور، بندرانزلی، صندوق پستی ۶۶
3 - سردبیر مجله علوم آبزی پروری، تهران، ایران
4 - پژوهشکده آبزی پروری آبهای داخلی کشور، بندرانزلی، صندوق پستی ۶۶
5 - دانش آموخته کارشناسی ارشد شیلات، موسسه آموزش عالی خزر

Received: 2015-01-27 Accepted : 2017-05-21 Published : 2015-01-21

Keywords: Salmo trutta fario, Grows condition, Fulton, Clark, Lar reservoir lake. vv,

Abstract :

For this study which is done in2008-2009, 140Caspian salmon (Salmo trutta fario) fish were grows condition, in Lar Reservoir Lake. During the study, some biometric specification such as length, weight, age, gonad weight and condition factor of Fulton and Clark in both sexes were examined. The male fish in the water source(85samples), with total body length15to32.6cm, Fork length14.3to31.9cm and body weight40to451.3gr. Body weight without offal29to393.3gr, and Fulton index 0.84to1.60, Clark0.68to1.35, absolute weight of gonad15to 28.03gr. Weight of gonad respectively  was0.17to12.56per cent of body weight. And age2to6years were variable. Lar female fish of water source (55sample), with total body length14.2to46.2cm, Fork length13.7to44.8cm, body weight  28.6to893,94gr, body weight without offal25.0to762gr, Fulton index0/89to1/56, Clark index0.74to1.19, the absolute weight of gonad0.08to59.86gr, the respective weight of gonad0.12to20.03body weight, absolute fecundity119to1088eggs, Age2to7years were variable. Gonad fish maturity whether in male or female in this study were between 2to5.  By the Kruskal-Wallis test, Fulton index values between the two sexes , male(1.26 ± 0.01) and female(1.21 ± 0.02) and also in Clark index between two sexes male(1.06 ± 0.02) and female(0.99 ± 0.01) statistical differences were observed (P0.05). But the variance analysis differences between the male and female from the perspective of indices absolute and respective weight of gonad were showed (P vvvvvv