Stress Coping Strategies in Brown Trout ( Salmo Trutta ): Ecological Significance and Effects of Sea-Ranching

شجره شناسی ماهی قزل‌آلای خال‌قرمز (Salmo trutta L. 1758) رودخانه جاجرود با استفاده از توالی ناحیه D-Loop

In this study phylogenetic relationship of the Jajrud River Brown trout Salmo trutta L. 1758 in the Namak Lake basin was analyzed using complete D-Loop sequence of the mitochondrial genome, compared to other Iranian populations of the species. The results clarified that Jajrud brown trout, similar to other Iranian brown trout populations belongs to the Danube phylogenetic lineage. The observed ...

Effect of age on reproductive performance in female Caspian brown trout (Salmo trutta caspious, Kessler 1877)

Caspian brown trout (Salmo trutta caspius) is one of the economically valuable species in the Caspian Sea. Artificial propagation and production of larvae are the main problems in the early culture of this species. The purpose of this paper is to study the effect of reproductive performance of female broods on opposition reproduction efficiency in Caspian brown trout in the breeding season of 2...

The pathogenicity of Aeromonas salmonicida (Griffin) in sea and brackish waters.

The experimental pathogenesis of Aeromonas salmonicida for the sea trout (Salmo trutta) and the brown trout (Salmo fario) in sea and brackish waters was examined by contact between infected and healthy fishes. Sea trout and brown trout both acquired infection by contact with infected S. fario at salinity values from 2-54 yo to 3.3 I yo (wlw) when water temperatures ranged from 5.6" to 14.5". Th...

The effects of extender type, freezing and thawing rates on fertility of the cryopreserved semen of the Caspian brown trout (Salmo trutta caspius )

Cryopreservation of semen from the Caspian brown trout (Salmo trutta caspius) and effects of extender type, freezing and thawing rates on fertilization ability were studied. After assessment of semen quality, one part of semen was diluted with three parts of different extender and decanted into 0.5ml straws. Freezing was carried out at two freezing levels, 1.5cm and 2cm above surface of liquid ...

The effect of salinity on spotting features of Salmo trutta abanticus, S. trutta fario and S. trutta labrax of cultured brown trout