بررسي مقايسه اي الگوهاي رشد ماهي خياطه Alburnoides namaki Bogutskaya and Coad, 2009 در حوضه درياچه نمك

Comparative study of growth patterns Alburnoides namaki Bogutskaya and Coad, 2009 in the Salt Lake Basin

ﺟﻬﺖ ﺑﺮرﺳﯽ اﻟﮕﻮﻫﺎي رﺷﺪ ﻣﺎﻫﯽ ﺧﯿﺎﻃﻪ Alburnoides namaki در ﺣﻮﺿﻪ درﯾﺎﭼﻪ ﻧﻤﮏ ﺗﻌﺪاد325 ﻗﻄﻌﻪ ﻣﺎﻫﯽ ﺑﻪوﺳﯿﻠﻪ ﺗﻮر ﺗﺮال دﺳﺘﯽ ﺑﺎ ﭼﺸﻤﻪ دو ﺳﺎﻧﺘﯽﻣﺘﺮ )20 ﻣﯿﻠﯽﻣﺘﺮ ﻓﺎﺻﻠﻪ ﮔﺮه ﺗﺎ ﮔﺮه( در ﻓﺼﻞ زﻣﺴﺘﺎن 1396 ﺻﯿﺪ ﮔﺮدﯾﺪ. ﻧﺴﺒﺖ ﺟﻨﺴﯽ ﻧﺮ ﺑﻪ ﻣﺎده در ﺟﻤﻌﯿﺖﻫﺎي ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻧﺸﺎن داد اﺧﺘﻼف ﻣﻌﻨﯽداري ﺑﯿﻦ ﻧﺴﺒﺖ ﺟﻨﺴﯽ ﻧﺮ و ﻣﺎده در ﻣﻨﺎﻃﻖ ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻧﺪاﺷﺖ. راﺑﻄﻪ ﻃﻮل و وزن در ﺟﻤﻌﯿﺖ رود ﮔﻠﻮﺷﺠﺮد 0/0097TL3/15 =W ، در ﺟﻤﻌﯿﺖ رود ﯾﻮﻧﺠﯽ W= 0/0138TL2/98 و در ﺟﻤﻌﯿﺖ رود ﺗﻮره W= 0/0062TL3/25 ﺑﻪدﺳﺖ آﻣﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ اﻟﮕﻮي رﺷﺪ اﯾﻦ ﮔﻮﻧﻪ در ﺟﻤﻌﯿﺖﻫﺎي رود ﮔﻠﻮﺷﺠﺮد و رود ﺗﻮره از ﻧﻮع آﻟﻮﻣﺘﺮﯾﮏ ﻣﺜﺒﺖ و در ﺟﻤﻌﯿﺖ رود ﯾﻮﻧﺠﯽ از ﻧﻮع اﯾﺰوﻣﺘﺮﯾﮏ ﺑﻮد. ﺑﺮرﺳﯽ ﺿﺮﯾﺐ وﺿﻌﯿﺖ ﺑﯿﻦ ﺳﻨﯿﻦ ﻧﺸﺎن داد ﮐﻪ ﺑﺮاي ﻫﺮ دو ﺟﻨﺲ ﻧﺮ و ﻣﺎده ﺑﺎﻻﺗﺮﯾﻦ ﻣﻘﺪار آن ﺑﺮاي ﺗﻤﺎم ﺳﻨﯿﻦ در رود ﯾﻮﻧﺠﯽ ﻣﺸﺎﻫﺪه ﺷﺪ. ﺑﺎﻻﺗﺮﯾﻦ ﻣﻘﺪار اﯾﻦ ﺿﺮﯾﺐ ﺑﺮاي ﺟﻨﺲ ﻧﺮ در رود ﮔﻠﻮﺷﺠﺮد و رود ﯾﻮﻧﺠﯽ در ﺳﻦ 4 و در رود ﺗﻮره در ﺳﻨﯿﻦ 1 و 5 ﻣﺸﺎﻫﺪه ﮔﺮدﯾﺪ. ﺑﺎﻻﺗﺮﯾﻦ ﺿﺮﯾﺐ رﺷﺪ ﻟﺤﻈﻪاي در رودﻫﺎي ﮔﻠﻮﺷﺠﺮد و ﯾﻮﻧﺠﯽ ﺑﺮاي ﻫﺮ دو ﺟﻨﺲ ﻧﺮ و ﻣﺎده در ﺳﻨﯿﻦ 3 - +2 ﺳﺎل ﻣﺸﺎﻫﺪه ﮔﺮدﯾﺪ و در رود - ﺑﻪدﺳﺖ آﻣﺪ. ﻣﻌﺎدﻟﻪ رﺷﺪ ﻓﻮن ﺑﺮﺗﺎﻻﻧﻔﯽ ﺑﺮاي ﺟﻤﻌﯿﺖ رود ﮔﻠﻮﺷﺠﺮد1 - +2رود ﺗﻮره در ﺳﻨﯿﻦ -e-0/07 (t+2/47) و ﺑﺮاي ﺟﻤﻌﯿﺖ رود ﺗﻮره Lt= 171/95(1-e-0/09 (t+2/39) ﺑﺮاي ﺟﻤﻌﯿﺖ رود ﯾﻮﻧﺠﯽ،Lt= 172/10(1 193/30(1 =Lt، ﻣﺤﺎﺳﺒﻪ ﮔﺮدﯾﺪ.

To study the growth patterns of Alburnoides namaki in the salt lake, For this purpose a total of 325 specimens were sampled using by By hand trawl net with two centimeters mesh (20 mm distance from node to node) in winter of 2018. Male to female sex ratio in the population studied showed There was no significant difference between males and females in studied areas (X2 Gloushjerd=0.074, X2 Yunji=0.453, X2 Tureh=1.080,). Length-weight relationship in the population Golushjerd river W=0.0097TL3.15, In the population of the Yunji river W=0.0138TL2.98 and In the population of the Turh river W=0.0062TL3.25 Was obtained. The results showed that the growth pattern of this species in the populations of Goloshjerd and Tureh river is positive allometric and In the population of the Yunji river, it was isometric (t-test, tGloushjerd = 1.73, tYoonji = 0.26, tToure = 2.67, p < 0.05). The condition factor between ages showed that for both males and females, its highest value was observed for all ages in the Yunji river. The highest value of this coefficient was observed for male in the Gloushjerd river and Yunji river at the age of +4 and in the Toure river at +1 and +5. Maximum Growth rate In Gluoshjerd and Yunji rivers for both males and females At the age of 2+-3+ years and In the Toure River at 1+-2+ was obtained. The von Bertolaniffy Growth model (VBGF) for the Gluoshjerd river Population Lt=172.10(1-e-0.10(t+1.70), For the Yunjji river population Lt=171.95(1-e-0.09(t+2.39) and for the Tureh river population Lt=193.30(1-e-0.07(t+2.47) was calculated.