مطالعه برخی خصوصیات پویایی‌‌شناسی جمعیت و وضعیت صید ماهی کپور معمولی (Cyprinus carpio Linnaeus, 1758) در بخش جنوب‌شرقی دریای خزر (استان گلستان) در سال‌های 1395-1400

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 مربی پژوهشی مرکز تحقیقات ذخایر آبزیان آب‌های داخلی گرگان، گرگان، ایران

2 نویسنده مسئول، استاد گروه شیلات، دانشکده کشاورزی و منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران.

3 استادیار گروه شیلات، دانشکده کشاورزی و منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران

4 استاد گروه تولید و بهره‌برداری آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

5 استاد گروه شیلات، دانشکده کشاورزی و منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران

6 استادیار پژوهشی مرکز تحقیقات ذخایر آبزیان آب‌های داخلی گرگان، گرگان، ایران

چکیده

سابقه و هدف: ماهی کپور معمولی (Cyprinuscarpio Linnaeus, 1758) یکی از گونه‌های مهم و با ارزش دریای خزر هست که متأسفانه صید آن در سال­های اخیر به‌شدت کاهش یافته است. هدف از این پژوهش، بررسی وضعیت صید ماهی کپور در دریای خزر با استفاده از دادهای صید می­باشد.
مواد و روش­ها: در این پژوهش، الگوی کاهش صید این گونه با استفاده از داده­های صید به‌‌ازای واحد تلاش (CPUE) در دوره زمانی سال­های 1395 تا 1400 مورد ارزیابی قرار گرفتند.
یافته­ ها: محدوده طول چنگالی، نمونه­ها درسال‌های مختلف متفاوت بود و در دامنه 17-75 سانتی‌متر بود. هم‌چنین پارامترهای پویایی آن در سال­های مختلف متفاوت بود و از الگوی ثابتی پیروی نکرد. نرخ مرگ و میر صیادی جاری در مقایسه با نقاط مرجع زیستی نشان داد که روند صید جاری بیش‌تراز ضرایب مرگ و میر بهینه وحد مرگ و میر است.
نتیجه‌گیری: نتایج بیانگر وضعیت بحرانی آینده صید ماهی کپور بوده و ادامه این سیاست برداشت منجر به کاهش شدید و نابودی ذخایر آن خواهد شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The study of some characteristics of population dynamics and fishing status of common carp (Cyprinus carpio Linnaeus, 1758) in the southeastern part of the Caspian Sea (Golestan province) in the years 1395-1400

نویسندگان [English]

  • Hassan Mohammadkhani 1
  • Hojjatollah Jafaryan 2
  • Hadi Raeisi 3
  • Rasoul Ghorbani 4
  • Rahman Patimar 5
  • Abdolazim Fazel 6
1 Research Instructor, Inland Waters Aquatics Resources Research Center-Gorgan, Iranian Fisheries Sciences Research Institute, Agricultural Research Education and Extension Organization (AREEO), Gorgan, Iran
2 Corresponding Author, Professor, Dept. of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
3 Assistant Prof., Dept. of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran.
4 Professor, Dept. of Aquatics Production and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
5 Professor, Dept. of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad. Kavous, Iran.
6 Research Assistant Professor, Gorgan Inland Waters Aquatic Resources Research Center, Gorgan, Iran
چکیده [English]

Article Info ABSTRACT
Article type:
Full Length Research Paper
Article history:
Received: ------------
Revised: ------------
Accepted: ------------
Keywords:
Caspian Sea,
Catch reduction pattern
Common carp,
Population dynamics
The common carp (Cyprinus carpio Linnaeus, 1758) is an important and valuable species in the Caspian Sea , whose catch has unfortunately decline sharply in recent years. In this research, the decline in catches of this species was investigated using catch per unit effort (CPUE) data from 1395 to 1400. The fork length of the samples varied from year to year , ranging from 17 to 75 cm during the six year study period. The dynamic parameters also varied in different years and did not follow a fixed pattern. The current fishing mortality rate compared to the biological reference points showed that the current fishing trend is higher than the optimal mortality coefficients and the mortality limit. The results indicate a critical situation for the future of the carp fishery. The continuation of this fishing policy will lead to a strong reduction and destruction of the stock.

کلیدواژه‌ها [English]

  • Keywords: Caspian Sea
  • Catch reduction pattern Common carp
  • Population dynamics

مراجع

1.King, M. (2010). Fisheries biology assessment and management fishing. Second Edition. Blackwell publishing Ltd, 382p.
2.Cooper, A. B. (2004). A Guide to Fisheries Stock Assessment. Department of Natural Resources. University of New Hampshire. 44p.
3.Abdoli, A., & Naderi, M. (2008). Biodiversity of fish in the southern of basin of the Caspian Sea: Aquatic Science Publishing. 238p.
4.Salmanmahiny, A., Fazli, H., Daryanabard, R., Kamyab, H. R., Fendereski, F., Davar, L., Azarmedal, H., Mehri, A., Kheirabadi, V., Mamashli, M., & Jahanshahi, M. (2012). Zoning and determining the degree of ecological sensitivity. Coastal areas south of the Caspian Sea. Sadaf Sama Publications. pp. 200-220.
5.Abdoli, A. (1999). Fishes of inland waters of Iran. 122p.
6.Bandani, G. A. (2013). Stock assessment of common carp and Caspian roach in Iranian coastal waters in south Caspian Sea. Inland waters Aquatic Stock Research Institute. N.0-77-12-91115. 40p. [In Persian]
7.Daryanabard, Gh., Abdolmaleki, Sh., Bandani, Gh. A., & Kor, D. (2007). Stock assessment of fish in Caspian Sea. Final Report. Iranian Fisheries Research Institute. 220p.
8.Harley, Sh., Ransom, J., Myers, A., & Alistair, D. (2001). Is Catch-per-Unit-Effort Proportional to Abundance? Canadian Journal of Fisheries and Aquatic Sciences, DOI: 10.1139/cjfas-58-9-1760.
9.Zhang, C. I., & Sullivan, P. J. (1988). Biomass-based cohort analysis that incorporates growth. Trans. Am. Fish. Soc. 117, 180-189.
10.Zhang, C. I., & Mergrey, B. A. (2010). A Simple Biomass-Based Length-Cohort Analysis for Estimating Biomass and Fishing Mortality, Transactions of the American Fisheries Society. 139, 911-924.
11.Dick, E. J., & MacCall, A. D. (2011). Depletion-Based Stock Reduction Analysis: A catch-based method for determining sustainable yields for data-poor fish stocks. Fisheries Research journal. homepage:www.elsevier.com/ locate/fisheries.
12.Huxley, L. S. (1924). Constant differential growth ratios and their significance. Nature. 114, 895896.
13.Pauly, D., & Munro, J. L. (1984). Once more on the comparison of growth in fish and invertebrates. ICLARM: International Center for Living Aquatic Resources Management, Fishbyte, 2 (1), 21.
14.Pauly, D. (1979). Theory and management of tropical multispecies stocks: a review with emphasis on the Southeast Asian demersal fisheries. ICLARM Studies Reviews, 35p.
15.Pauly, D. (1980). On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. Journal Du Conseil International Pour L'Exploration De La Mer. 39 (2), 175-192.
16.Sparre, P., & Venema, S. C. (1992). Introduction to tropical fish Stock Assessment. Part 1- Manual, 375, FAO Rome. ITALY.
17.Beverton, R. J. H., & Holt, S. J. (1956). A review of methods for estimating mortality rates in exploited fish populations, with special reference to sources of bias in catch sampling. Rapp. P.-v Reun. CIEM, 140, 67-83.
18.Nikolesky, G. V. (1976). The ecology of fishes. Academic press, London. [The nutritive value of carp (Cyprinus carpio)].
19.ALP, A., & Balik, S. (2000). Growth conditions and stock analysis of the carp (Cyprinus carpio, Linnaeus 1758) population in Gölhisar Lake. Turkish Journal of Zoology, 24 (3), 291-304.
20.Tempero, G. W., Ling, N., Hicks, B. J., & Osborne, M. W. (2006). Age composition, growth, and reproduction of koi carp (Cyprinus carpio) in the lower Waikato region, New Zealand. New Zealand Journal of Marine and Freshwater Research, 40 (4), 571-583.
21.Unver, B. (1998). An Investigation of the reproduction properties of chub (Leuciscus cephalus L., 1758) in Lake Tödürge (Zara/Sivas). Tr. J. Zoology, 22, 141-147.
22.Karataş, M., Çiçek, E., Başusta, A., & Başusta, N. (2007). Age, growth and mortality of common carp (Cyprinus carpio Linneaus, 1758) population in Almus Dam Lake (Tokat-Turkey). Journal of Applied Biological Sciences, 1 (3), 81-85.
23.Yilmaz, S., Yazicioglu, O., & Polat, N. (2012). Age and Growth Properties of Common Carp (Cyprinus carpio L., 1758) from Bafra Fish Lakes (Samsun, Turkey).
24.Bandani, Gh., Ghasemi, Sh., Parafkande, F., Larijani, M., Daryanabard, Gh., Aghaei, A., Nazeri, M., Noudeh Sharifi, S., Sohrabi, T., & Iri, Y. (2014). Evaluation of carp and carp stocks in the Iranian waters of the southern Caspian Sea.
25.Pitcher, T. J. (2002). A bumpy old road: Size-base methods in fisheries assessment. In: Hand book of Fish Biology and Fisheries: Vol. 2, (Fisheries. Hart, P. J. B., and Reynolds, J. D.). Blackwell Publishing, Oxford. pp. 189-210.
26.Balık, İ., Çubuk, H., Özkök, R., & Uysal, R. (2006). Some characteristics and size of carp (Cyprinus carpio L., 1758) population in the Lake Karamık (Afyonkarahisar/Turkey). Turkish Journal of Fisheries and Aquatic Sciences, 6 (2).
27.Mirza, Z. S., Nadeem, M. S., Beg, M. A., & Qayyum, M. (2012). Population status and biological characteristics of common carp (Cyprinus carpio L., 1758) in Magla reservoir (Pakistan). 40-53.
28.Saylar, Ö., & Benzer, S. (2014). Age and growth characteristics of carp (Cyprinus carpio L., 1758) in Mogan Lake, Ankara, Turkey. Pak. J. Zool.46 (5), 1447-1453.
29.Ghaninejad, D., Abdolmaleki, Sh., Sayad Bourani, M., Poorgholam, M., Fazli, H., Bandani, Gh. A., & Abbasi, K. (2002). Stock assessment of Caspian bony fish. Final report. Iranian Fisheries Research Institute.
30.Bandani, Gh., Abdolmaleki, Sh., Yelqi, S., Ghasemi, Sh., Ghorbani, R., Tavakoli, M., Parafkande, P., Daryanabard, R., Larijani, M., Nahrour, M., Kor, A., Khedmati, K., & Taleshian, H. (2006). Study of biology, age, growth, diet and reproduction of carp fish (Cyprinus carpio) in the southern shores of the Caspian Sea. The final report of the Research Center for Aquatic Reserves of Inland Waters-Gorgan.
31.Aliakbarian Ghanati, A. (2017). Modelling seasonal-spatial relationships between common carp (Cyprinus carpio Linnaeus, 1758) catch and stock assessment and environmental factors in southestern Caspian Sea, Agricultural Sciences and Natural Resources, College of Fisheries and Environmental Sciences, Ph.D. thesis. 149p.
32.Cadima, E. L. (2003). Fish Stock Assessment Manual. FAO fisheries Technical paper No. 393. Rome. 161p.
33.Haddon, M. (2011). Modelling and Quantitative Methods in Fisheries.' 2nd edn, Chapman and Hall. 449p.
34.Beddington, J. R., & May, R. M. (1977). Harvesting natural populations in a randomly fluctuating environment. Science, 197 (4302), 463-465.
35.Matsuda, H., & Abrams, P. A. (2006). Maximal yields from multi-species fisheries systems: Rules for harvesting top predators and systems with multiple trophic levels. Ecol. Appl. 16, 225-237.
مجله بهره برداری و پرورش آبزیان
دوره 14، شماره 2
تیر 1404
صفحه 88-104

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