| تعداد نشریات | 283 |
| تعداد نشریات سازمان | 81 |
| تعداد شماره‌ها | 2,766 |
| تعداد مقالات | 31,497 |
| تعداد مشاهده مقاله | 39,698,976 |
| تعداد دریافت فایل اصل مقاله | 17,254,055 |
تکثیر نیمه مصنوعی ماهی سوف و پرورش آن تا حد انگشت قد | ||
| مجله علمی شیلات ایران | ||
| مقاله 3، دوره 5، شماره 1، فروردین و اردیبهشت 1375، صفحه 25-36 اصل مقاله (960.74 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/isfj.1996.116278 | ||
| نویسنده | ||
| محمود رامین | ||
| چکیده | ||
| تکثیر نیمه مصنوعی ماهی سوف و پرورش آن تا حد انگشت قد | ||
| کلیدواژه‌ها | ||
| تکثیر؛ نیمه مصنوعی؛ ماهی سوف | ||
| عنوان مقاله [English] | ||
| Semiartificial Propagation of Stizostedion lucioperca and Rearing them to Fingerling Size | ||
| نویسندگان [English] | ||
| M. Ramin | ||
| چکیده [English] | ||
| A research experiment carried out to pike-perch culture for enhancement program in south-west Caspian Sea. Brood-stock achieve spawning time during March-April when the ambient temperature in local climate ranges 12 – 14 ֯C. Man-made nests prepared by wooden frames and which synthetic wool bunches are fastened and placed in pond water at intervals of 5 meters each. The spawners preferred the green texture nest material which were placed close to bottom. The eggs drop on the nest and average fertilization occurred 30 - 90%. The nests, eggs on them are kept in mist chamber and also collected fertilized eggs placed into 200 lit zugjar for development. The former method and technique produced better survival rate. Appearance of eye pigmentation on the eggs observed during the 3th or 4th day of incubation process. Yolk-sac absorption lasted 9-13 days. The water temperature recorded 12-16 ֯C during the culture. The numbers of 1g dry eggs computed 1900-2050 and swelled eggs 1120-1170. Avera..... | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 165 تعداد دریافت فایل اصل مقاله: 165 |
||