ﺗﺄﺛﯿﺮ ﺷﺮاﯾﻂ ﻣﺤﯿﻄﯽ ﺑﺮ ﺻﯿﺪ ﺗﻮرﻫﺎي ﭘﺮه ﺳﺎﺣﻠﯽ: ﻣﻄﺎﻟﻌﻪ ﻣﻮردي ﺻﯿﺪ ﭘﺮه در ﻣﻨﻄﻘﻪ ﻣﯿﺎﻧﮑﺎﻟﻪ - ﺟﻨﻮب ﺷﺮﻗﯽ درﯾﺎي ﺧﺰر

The effect of environmental conditions on catches in CPUE in Beach sine tours in Miankaleh region of Golestan province

ﺗﻐﯿﯿﺮات آب و ﻫﻮاﯾﯽ ﻣﯽﺗﻮاﻧﺪ ﺑﻪﻃﻮر ﻣﺴﺘﻘﯿﻢ ﯾﺎ ﻏﯿﺮﻣﺴﺘﻘﯿﻢ ﺑﺮ ﺣﻀﻮر و ﭘﺮاﮐﻨﺶ آﺑﺰﯾﺎن اﺛﺮ ﮔﺬارد. در اﯾﻦ ﺗﺤﻘﯿﻖ ﺑﻪ ﺑﺮرﺳﯽ ﺗﺄﺛﯿﺮ ﻋﻮاﻣﻞﻣﺤﯿﻄﯽ ﺑﺮ ﮐﯿﻔﯿﺖو ﮐﻤﯿﺖ ﺻﯿﺪ ﻣﺎﻫﯿﺎن اﺳﺘﺨﻮاﻧﯽ ﻏﺎﻟﺐ در ﺳﻮاﺣﻞ اﺳﺘﺎن ﮔﻠﺴﺘﺎن، ﻧﻈﯿﺮ ﻣﺎﻫﯽ ﺳﻔﯿﺪ 1901 ,Rutilus kutum (Kamensky، ﻣﺎﻫﯽ ﮐﻔﺎلﻃﻼﯾﯽ )1810 ,Chelon auratus (Risso و ﺷﮓﻣﺎﻫﯽ، .Alosa sp ﭘﺮداﺧﺘﻪ ﺷﺪه اﺳﺖ. دادهﻫﺎي ﻣﻮرد ﻧﻈﺮ، ﻃﯽ 73 ﻣﺮﺗﺒﻪ ﭘﺮهﮐﺸﯽ ﺗﻮﺳﻂ ﺗﻌﺎوﻧﯽﻫﺎي ﭘﺮه ﻣﺎﻫﯿﺎن اﺳﺘﺨﻮاﻧﯽ ﻣﺴﺘﻘﺮ در ﺷﺒﻪﺟﺰﯾﺮه ﻣﯿﺎﻧﮑﺎﻟﻪ )ﻣﺤﺪوده اﺳﺘﺎن ﮔﻠﺴﺘﺎن( در ﻓﺼﻞ ﺻﯿﺪ 1395-96 )ﻣﻬﺮ ﻣﺎه ﺗﺎ اردﯾﺒﻬﺸﺖ ﻣﺎه( ﺟﻤﻊآوري ﮔﺮدﯾﺪ. در اﯾﻦ ﺗﺤﻘﯿﻖ ﺗﻌﺪاد 8914 ﻣﺎﻫﯽ ﺳﻔﯿﺪ، 4067 ﮐﻔﺎلﻃﻼﯾﯽ و 2335 ﻗﻄﻌﻪ ﺷﮓﻣﺎﻫﯽ ﻣﻮرد زﯾﺴﺖﺳﻨﺠﯽ و ﺗﻮزﯾﻦ ﮔﺮدﯾﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ﻓﺮاواﻧﯽ ﻣﻄﻠﻖ ﻣﺎﻫﯽ ﮐﻔﺎل ﻃﻼﯾﯽ ﺑﺎ داﺷﺘﻦ ﭘﺎراﻣﺘﺮﻫﺎي ﻣﻌﻨﯽدار زﻣﺎن، ﺣﺪاﻗﻞ دﻣﺎ، اﻧﺪازه ﭼﺸﻤﻪ، رﻃﻮﺑﺖ و زﻣﺎن ﺷﺮوع ﭘﺮهﮐﺸﯽ در ﻣﺪل، 206.29 F= 0.50 = time – 1.35 Tmin – 3.07 Mesh – 0.64 Humidity – 10.52 t start, R2 43.1، ﺑﻬﺘﺮﯾﻦ ﻣﺪل را ﻧﺸﺎن ﻣﯽدﻫﺪ. ﺑﺮاي ﻓﺮاواﻧﯽ ﻣﻄﻠﻖ ﻣﺎﻫﯽ ﺳﻔﯿﺪ ﺑﺎ داﺷﺘﻦ ﭘﺎراﻣﺘﺮﻫﺎي ﻣﻌﻨﯽدار زﻣﺎن، زﻣﺎن ﺷﺮوع ﭘﺮهﮐﺸﯽ و اﻧﺪازه ﭼﺸﻤﻪ ﻣﺪل، 0.47 = F=-92.2 + 77.23 time – 27.59 tstart + 4.06 Mesh, R2 و ﺑﺮاي ﺷﮓﻣﺎﻫﯽ ﺑﺎ داﺷﺘﻦ ﭘﺎراﻣﺘﺮ ﻣﻌﻨﯽدار زﻣﺎن ﺷﺮوع ﭘﺮهﮐﺸﯽ در ﻣﺪل F= 14.91-6.965 time to start, R2=0.026، ﺑﻪﻋﻨﻮان ﺑﻬﺘﺮﯾﻦ ﻣﺪل ﺑﻪدﺳﺖ آﻣﺪ.

The bony fish of the Caspian Sea are among the most important and most valuable fish in this sea, which unfortunately their reserves have been declining for many reasons in recent years. In this research, environmental factors were investigated on catching important bones such as white rutilus kutum (Kamensky, 1901), golden multitude of Chelon auratus (Risso, 1810) and Alosa saposchnikowii (Grimm, 1887). The catches were carried out by blade cooperatives on the Miankale Peninsula in Golestan Province during 73 times during the 1965-93 fishing season. In this research, 8914 whitefish, 4067 golden babies and 2335 piglets were biometric and weighed. The results showed that for goldfish with relevant data in model 5, it can be 50% for whitefish with the relevant data in model 3 can be 47% and for fish only one model with The very low coefficient of determination with a meaningful parameter yields quantities of catch per unit of effort. The results also showed that the effect of environmental parameters and spring on the average fish frequency per unit of effort was observed that the temperature factor, especially the increase of maximum temperature, was the most effect on the frequency of whitefish in the Caspian Sea, while increasing the humidity and precipitation on fish catch; Reducing the winds of the year will have the highest impact on the catching of wild boar and word. The highest catch per unit of effort was observed at 31 and 33 mm fountain.