تحلیل روند میزان صید و بازسازی گونه های کپور و کلمه در آبهای ایرانی دریای خزر

نوع مقاله : مقاله کامل علمی ترویجی

نویسندگان

1 1مربی پژوهشی مرکز تحقیقات آبزیان آب‌های داخلی، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران

2 کارشناس‌ارشد مرکز تحقیقات آبزیان آب‌های داخلی، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران

3 3استادیار پژوهشی پژوهشکده اکولوژی دریای خزر، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، ساری، ایران

4 4مربی پژوهشی پژوهشکده اکولوژی دریای خزر، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، ساری، ایران

چکیده

خلاصه:
صید ماهی کپور (Cprinus. carpio) و کلمه (Rutilus. caspicus) درآبهای جنوبی دریای خزر بویژه استان گلستان از جایگاه خاصی برخوردار بوده است زیرا عمده صید این دوگونه در دریای خزر به سواحل شرقی استان گلستان مربوط می شود. این مطالعه جهت بررسی تاثیر اندازه و تعداد بچه ماهیان رهاسازی شده در رودخانه گرگانرود, کاهش سطح آب دریای خزر و دبی رودخانه بر میزان صید در واحد تلاش صیادی آنها صورت گرفته است. در این رابطه آمار صید و رهاسازی دو گونه کپور و کلمه استان گلستان درطی سال های 78 تا 96 بصورت سالانه از معاونت صید اداره کل شیلات، و اطلاعات تغییرات سطح آب دریای خزر از مرکز تحقیقات دریای خزر و اطلاعات دبی آب رودخانه ها از اداره هواشناسی گلستان تهیه گردید. میزان صید ماهی و تعداد رهاسازی کپور و کلمه در طول این دوره زمانی نوسان داشته و در چهار سال اخیر سهم صید ماهی کپور (C. carpio) و کلمه (R. caspicus) دراستان گلستان نسبت به صید کل این گونه در آب‌های ایرانی سواحل جنوبی کاهش یافته است در حالیکه تعداد رهاسازی در این چهارسال افزایش داشته است. ننایج مطالعه حاضر نشان داد که عوامل مختلفی (سطح آب دریا، وزن رهاسازی و تعدادرهاسازی) بطور همزمان بر میزان صید در واحد تلاش صیادی دوگونه ماهی کپور و کلمه تاثیر می گذارند.

کلیدواژه‌ها

عنوان مقاله [English]

Analyzing the trend of catch rate and reconstruction of carp and roach in the Iranian waters of Caspian Sea

نویسندگان [English]

  • Gholamali Bandani 1
  • Mohhamad Larijani 2
  • Hassan Frazli 3
  • Gholamreza Daryanabard 4
1 1The Instructor of Inland Water Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
2 2The Master of Inland Water Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
3 3The Assistant Professor of Caspian Sea Ecology Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran
4 4The Instructor of Caspian Sea Ecology Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran
چکیده [English]

Summary:
The catch of Carp (Cpinus carpio) and Roach (Rutilus caspicus) in the southern waters of the Caspian Sea, especially in Golestan province, have been a special status because the major catch of these two species in the Caspian Sea are related to the eastern coast of the Golestan province. This study was conducted to investigate the effect of the size and numbers of fingerling released into the Gorganroud River, decline of the water level in the Caspian Sea and discharge of the river on cpue (catch per unit effort) of these two species. For this purpose, the data on catch and release of two species carp and roach yearly during 1999-2017 from fisheries organization, the data of changes in the Caspian Sea level from the Caspian Sea Research Center and information related to discharge of river water from the Golestan Meteorological Office were prepared. The catch rate and the number of released fingerling of two species carp and roach were fluctuated during this period. During the last four years, the catch share of C. carpio and R. caspicus in Golestan province was decreased in comparison to the total catch rate of these species in the Iranian waters of the southern coast, while the number of release in these four years was increased. The results of this study showed that different factors (sea level, released weight, and released number) simultaneously affect the rate of catch per unite effort (cpue) of two species of carp and roach.

کلیدواژه‌ها [English]

  • Keywords: Caspian Sea
  • Carp
  • Roach
  • reconstruction and stocks

مراجع

1.Almodovar, A., Nicola, G.G., Ayllon, D., and Elvira, B. 2012. Global warming threatens the persistence of Mediterranean brown trout. Glob. Change Biol.18: 1549-1560.
2.Bandai, G.A., Abdolmalaki, S., Tavakoli, M., Larijani, M., Ghorbani, R., Yelghi,S., Parafkande, F., Daryanabard, R.,
Kor, A., Khadmati, K., and Taleshian, H. 2008. Studying on biology (age, feeding and, reproductive of (Cyprinus carpio, Linnaeus 1758) in south coastal line Caspian Sea (Iranian waters). 54p.
3.Bandani, G., Ghasemi, Sh., Talebzadeh, A., Fazli, H., Taghvi, A., Larijani, M., Aghaeimoghadam, A., Yahyaei, M., Ghasami, M., and Shirazi, A. 2017. Stock assessment (Cyprinus carpio and Rutllus caspicus) in Iranian waters of Caspian Sea (2015-2017). Iranian Fisheries Science Research Institute - Inland Waters Aquatics Resources Research Center. 32p.
4.Bandai, G.A., Ghasemi, S., Taghvimotlagh, A., Larijani, M., Talebzadeh, A., Fazli, H., Aghaeimoghadam, A., yahyaei, M., Ghasami, M., and Rezaei Shirazi, A. 2018. Stock assessment (Cyprinus carpio and Rutllus caspicus) in Iranian waters
of Caspian Sea (2017-2018). Iranian Fisheries Science Research Institute. 29p.
5.Brander, K. 2005. Cod recruitment is strongly affected by climate when stock biomass is low. ICES J. Mar. Sci.
3: 339-343.
6.Brunel, T. 2010. Age-structure-dependent recruitment: A meta-analysis applied to Northeast Atlantic fish stocks. ICES J. Mar. Sci. 9: 1921-1930.
7.Fazli, H., Daryanabard, R., Badani, G.A., and Porgholami, A. 2016. Population dynamic, stock assessment and management of bony fishes in Iranian waters of the Caspian Sea. Iranian Fisheries Science Research Institute. 54p.
8.Ghanghermeh, A. 1997. Climate Change and Fluctuating Behavior of the Levelof the Caspian Sea. Geograph. Inf. J. (Sepehr). 6: 19-22.
9.Gholami, M., and Abassi, M. 2016. Caspian Sea Climate Change. 5th Regional Conference on Climate Change 25-26 January/Olympic hotel, Tehran. Global warming. Drought and Dust storm: A threat to the Region. 11p.
10.Gregory, B., and Richard, K. 2010. Climate, plankton and cod. Global Change Biology. 16: 1268-1280.
11.Gulyow, Z., and Oghli, M. 1997. Cyprinidae and perch of South Caspian Sea (population structure, ecology, propagation and regeneration strategies for the reserves). Translated by: Younes Adeli, 1998. Fisheries Research Center, Gilan province-anzali. 44p. (Translated in Persian) 
12.Higgs, D., and Fuiman, L. 1996. Ontogeny of visual and mechanosensory structure and function in Atlantic menhaden Brevoortia tyrannus. J. Exp. Biol. 12: 2619-2629.
13.Jakobsen, T., Fogarty, M.J., Megrey, B.A., and Moksness, E. 2009. Fish reproductive biology. John Wiley & Sons, Chichester, United Kingdom. 448p.
14.Johansen, R. 2007. A model for the interaction between gadoid larvaeand their nauplii prey. Math. Biosci. 208: 177-192.
15.Limburg, K.E., and Waldman, John, R. 2009. Dramatic Declines in North Atlantic Diadromous Fishes BioScience. 59: 955-965.
16.Lobón-Cerviá, J. 2014. Recruitment and survival rate variability in fish populations: density-dependent regulation or further evidence of environmental determinants? Can. J. Fish. Aqua. Sci. 71: 290-300.
17.Kazanchov, A. 1981. Caspian Sea fish and water catchment area translation and catalogs of Engineer Abolqasem Shariati, Rakhshan Mehrchap first publication. 205p. (Translated in Persian)
18.Ottersen, G., Hjermann, D., and Stenseth, N.C. 2006. Changes in spawning stock structure strengthen the link between climate and recruitment in a heavily fished cod stock. 3: 230-243.
19.Pörtner, H.O. 2001. Climate induced temperature effects on growth performance, fecundity and recruitment in marine fish: developing a hypothesis for cause and effect relationships in Atlantic cod (Gadus morhua) and common eelpout (Zoarces viviparus). Cont. Shelf Res. 21: 1975-1997.
20.Rosenzweig, C. 2008. Attributing physical and biological impacts to anthropogenic climate change. Nature. 453: 353-357.
21.Smith, B.B., and Walker, K.F. 2004. Spawning dynamics of common carpin the River Murray, South Australia, shown by macroscopic and histological staging of gonads. J. Fish Biol.64: 336-354.
22.Sommer, T.R., Harrell, W.C., Kurth, R., Feyrer, F., Zeug, S.C., and O’Leary, G. 2004. Ecological patterns of early life stages of fishes in a large river-floodplain of the San Francisco estuary. American Fisheries Society Symposium. 39: 111-123.
23.Souza, A.T., Ilarri, M.I., Timteo,S., Marques, J.C., and Martins, I.2018. Assessing the effects of temperature and salinity oscillations on a key mesopredator fish from European coastal systems. Science of the Total Environment. 640-641: 1332-1345
مجله بهره برداری و پرورش آبزیان
دوره 9، شماره 2
تیر 1399
صفحه 45-56

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