Risk assessment of rainbow trout culture in earthen ponds of Gomishan shrimp complex on the Caspian Sea fish

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 390

نسخه کامل این مقاله ارائه نشده است و در دسترس نمی باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

CBFCONF01_042

تاریخ نمایه سازی: 6 خرداد 1398

چکیده مقاله:

Gomishan shrimp culture complex has a great role in shrimp production and importing. Trout culture in second half of year has been suggested for increasing the ponds economic efficiency. One of the potential risks of the trout culture is entrance of this species to the Caspian Sea and threatening of the native species. If enters the sea, rainbow trout may threaten the economic fish species stocks by predating their fingerlings (e.g. sturgeons, cyprinids and mullets) or their feed items (e.g. Gammarus sp., Kilka and Aterina). Besides, trout may transfer diseases (e.g. VHS) to Caspian trout and threaten this valuable and rare fish stocks. However, due to high water temperature in summer and need for freshwater to reproduce, rainbow trout is unlikely able to establish a population in the Caspian Sea. Nowadays, despite the capture of rainbow trout from the sea by purse seines, the number of the caught fish is low without year classes suggesting that this species has not been able to reproduce in the sea. However, special attempts (e.g. installation of net frame in the ponds inlet and outlet, hygienic care and fish quarantine) should be made to avoid rainbow trout entrance to the Caspian Sea.

نویسندگان

Seyyed Morteza Hoseini

Inland Waters Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization, Gorgan, Iran.

Behrooz Gharavi

Inland Waters Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization, Gorgan, Iran.

Abdollah Haghpanah

Inland Waters Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization, Gorgan, Iran.