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:: دوره 19، شماره 2 - ( 1398 ) ::
جلد 19 شماره 2 صفحات 726-734 برگشت به فهرست نسخه ها
Evaluation of otolith shape variability in hatchery-reared brook trout (Salvelinus fontinalis), Black Sea trout (Salmo trutta labrax) and their hybrid
چکیده:   (885 مشاهده)
In aquaculture, the process of hybridization is used to produce animals that have better growth rates, meat quality, and higher resistance and tolerance to environmental variations than their parental species. The identification of a hybrid fish may require a DNA-based technology that is an expensive process. In this study, the sagittal otolith shape of hatchery-reared brook trout (Salvelinus fontinalis), Black Sea trout (Salmo trutta labrax) and their hybrid (S. fontinalis ♂ × S. t. labrax ♀) were studied and compared to elucidate the variation between their morphometric values. The otoliths were measured by image analysis and used to calculate shape descriptors: form-factor, roundness, and aspect ratio. Based on the morphometric measurements, the hybrid fish were not statistically intermediate between the parents and share most of the similarities with the female parent. The relationships between fish size and otolith size were best described by the exponential function (>r2=0.90).
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نوع مطالعه: پژوهشي | موضوع مقاله: Biology & physiology
دریافت: 1397/1/7 | پذیرش: 1397/3/12 | انتشار: 1399/1/1
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Bascinar N. Evaluation of otolith shape variability in hatchery-reared brook trout (Salvelinus fontinalis), Black Sea trout (Salmo trutta labrax) and their hybrid. IJFS. 2020; 19 (2) :726-734
URL: http://jifro.ir/article-1-3371-fa.html

Evaluation of otolith shape variability in hatchery-reared brook trout (Salvelinus fontinalis), Black Sea trout (Salmo trutta labrax) and their hybrid. مجله علوم شیلاتی ایران. 1398; 19 (2) :726-734

URL: http://jifro.ir/article-1-3371-fa.html



دوره 19، شماره 2 - ( 1398 ) برگشت به فهرست نسخه ها
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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