کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8875238 | 1623606 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of hybridisation on fecundity of Oreochromis karongae (Trewavas 1941)
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
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چکیده انگلیسی
Effect of hybridisation of female Oreochromis karongae and male O. shiranus on fecundity of O. karongae, was investigated at Bunda, Lilongwe, Malawi. Number of eggs, weight (mg) and diameter of individual egg (mm) and relative fecundity were assessed. The results revealed that hybridisation exhibited a significantly higher number of eggs (288.94 ± 15.8) per female compared to pure O. karongae (144.00 ± 7.23). There was no significant difference, in terms of number of eggs, between the hybrid and pure O. shiranus (298.60 ± 7.27). There was no significant difference between hybrid eggs size (27.8 ± 0.77 mg; 3.28 ± 0.12 mm, respectively for egg weight and diameter) and pure egg size of O. karongae (27.7 ± 0.03 mg; 3.00 ± 0.26 mm, respectively for egg weight and diameter). Therefore, hybridisation of female O. karongae and male O. shiranus may be used by farmers for increased production after further studies especially on hatchability and survival of eggs and fry, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Egyptian Journal of Aquatic Research - Volume 43, Issue 3, September 2017, Pages 241-244
Journal: The Egyptian Journal of Aquatic Research - Volume 43, Issue 3, September 2017, Pages 241-244
نویسندگان
Elysee Nzohabonayo, Jeremiah Kang'ombe, Daud Kassam,