ﺗﮑﺜﯿﺮﻧﯿﻤﻪ ﻣﺼﻨﻮﻋﯽ ﻣﺎﻫﯽ ﺳﻮف ﺣﺎﺟﯽ ﻃﺮﺧﺎن (Perca fluviatilis) ﺗﺎﻻب اﻧﺰﻟﯽ

Reproduction of semi-Artificial of Perca fluviatilis from Anzali Wetland

ﺗﮑﺜﯿﺮ ﻣﺎﻫﯽ ﻧﯿﻤﻪ ﻣﺼﻨﻮﻋﯽ ﺳﻮف ﺣﺎﺟﯽ ﻃﺮﺧﺎن ( Perca fluviatilis )ﺑﺎ ﺟﻤﻊ آوري ﺗﻌﺪاد ﻣﺤﺪود از ﺗﺎﻻب اﻧﺰﻟﯽ و ﻧﮕﻬﺪاري در ﯾﮏ ﻗﻔﺲ داﺧﻞ اﺳﺘﺨﺮ ﮐﻮﭼﮏ اﻧﺠﺎم و ﺳﭙﺲ در ﻃﯽ اواﺧﺮ اﺳﻔﻨﺪ ﻣﺎﻫﯿﺎن ﻧﺮ و ﻣﺎده از ﻫﻢ ﺟﺪا و ﺑﺎ اﺳﺘﻔﺎده از ﻫﻮرﻣﻮن اواﭘﺮﯾﻢ ﺑﺎ دوز 6 /0 ﻣﯿﻠﯽ ﮔﺮم ﺑﺮ ﮐﯿﻠﻮﮔﺮم ﺑﺮاي ﻣﺎده ﻫﺎ و ﻧﺼﻒ اﯾﻦ ﻣﻘﺪار ﺑﺮاي ﻧﺮﻫﺎ ﺗﺰرﯾﻖ ﮔﺮدﯾﺪ. ﻣﻮﻟﺪﯾﻦ ﻣﺎده ﺑﻪ ﺗﻌﺪاد 6 ﻗﻄﻌﻪ و ﻧﺮ ﻫﺎ ﺑﻪ ﺗﻌﺪاد 18 ﻗﻄﻌﻪ ﺑﺎ ﻣﯿﺎﻧﮕﯿﻦ وزﻧﯽ 115 ﮔﺮم در دو وان 4000 ﻟﯿﺘﺮي ﮐﻪ ﺑﻪ ﺗﻌﺪاد ﻣﻮﻟﺪﯾﻦ ﻣﺎده در آﻧﻬﺎ ﻻﻧﻪ ﺳﺎزي ﮔﺮدﯾﺪ. ﻣﺎﻫﯿﺎن ﻣﻮﻟﺪ در دﻣﺎي آب 2±12 در اﺳﻔﻨﺪ ﻣﺎه ﺑﻌﺪ از 7 روز از ﺗﺰرﯾﻖ، ﺗﺨﻤﺮﯾﺰي ﻧﻤﻮدﻧﺪ. ﻻروﻫﺎ ﭘﺲ از ﺟﺬب ﮐﯿﺴﻪ زرده ﺑﺎ زرده ﺗﺨﻢ ﻣﺮغ و ﺷﯿﺮﺧﺸﮏ ﺗﻐﺬﯾﻪ ﮔﺮدﯾﺪ. تعداد 3000 لارو با ميانگين وزني 3 ميلي گرم م ﺑﻪ اﺳﺘﺨﺮ ﺧﺎﮐﯽ ﮐﻪ از ﻗﺒﻞ آﺑﮕﯿﺮي و ﮐﻮد دﻫﯽ ﺷﺪه، ﻣﻌﺮﻓﯽ ﮔﺮدﯾﺪ. پرورش لاروها با استفاده از غني سازي استخر خاكي به مدت 3 ماه انجام و بازماندگي 20 درصدي به دست آمد.

limited number from Anzali lagoon and keeping that in the small cage inside the small pool. Male and female were separated and injected by 0.6 ml/kg hormone for females and half for males during the end of March. Six female and 18 male of fish (aver weight 115gr) were nested in 2 tanks with 4000 lit value. Brodstock fish was spawned after 7 days at 12±2°C in March .The larvae were fed by egg yolk and milk powder after absorption of yolk sacs. Around 30000 individuals were identified to earthen pond with average weight of 3mg.The farming of individuals were done by using of enrichment of earthen pond with survival rate of 20% during 3 months.