| تعداد نشریات | 285 |
| تعداد نشریات سازمان | 83 |
| تعداد شمارهها | 3,107 |
| تعداد مقالات | 34,629 |
| تعداد مشاهده مقاله | 49,671,313 |
| تعداد دریافت فایل اصل مقاله | 80,104,485 |
بررسی رژیم غذایی اردک ماهی در تالاب انزلی | ||
| مجله علمی شیلات ایران | ||
| مقاله 7، دوره 7، شماره 3، مهر و آبان 1377، صفحه 75-90 اصل مقاله (1.07 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/isfj.1998.116336 | ||
| نویسنده | ||
| علیرضا ولی پور | ||
| چکیده | ||
| بررسی رژیم غذایی اردک ماهی در تالاب انزلی | ||
| کلیدواژهها | ||
| رژیم غذایی؛ اردک ماهی؛ تالاب انزلی | ||
| عنوان مقاله [English] | ||
| An investigation on feeding habits of northern pike of Anzali Lagoon | ||
| نویسندگان [English] | ||
| A. Valipor | ||
| چکیده [English] | ||
| Northern pike (Esox lucius L.) as a major game fish can be valuable in the management of water resources. In the present study, a total of 152 pikes from four areas: Abkenar (24%), Sorkhankool (10%), Siakeshim (54%) and Sheyjan (12%) were sampled. Female fishes were 75.6% of the samples and males were only 24.4%. Northern pike showed relatively fast growth and fishes above two years of age were mature and reached an average length of 32 cm. Feeding intensity and growth co-efficient in this species were correlated. Growth was highest in the lower age groups and with an increase in age and size, the feeding intensity and growth co-efficient of this have decreased. Northern pike in different ages feeds on different species of fish found in Anzali Lagoon. The most important of these fish species are Carassius auratus, Hemiculter leucisculus, Rhodeus sericeus amarus and larvae of Chalcalburnus chalcoides. In the 0+ age group pike mainly feeds on zooplanktonic Mysids. The results of the pr..... | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 361 تعداد دریافت فایل اصل مقاله: 297 |
||