ارزیابی اثر مدیریت تراکم در همه گیری بیماری سندروم لکه سفید Whispovirus درمیگوی وانامی پرورشی (Litopenaeus vannamei Boone, 1931) درسایت پرورش میگوی گمیشان، استان گلستان

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 نویسنده مسئول، دانش‌آموخته دکتری تخصصی تولید و بهره‌برداری آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

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

3 استاد گروه تکثیر و پرورش آبزیان، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

چکیده

چکیده
بیماری لکه سفید به عنوان اصلی ترین مشکل بهداشتی مزارع پرورش میگو در ایران است که باعث تلفات شدید در استخرهای پرورش میگو گردیده است. این تحقیق به منظور ارزیابی همه گیری بیماری لکه سفید با تراکم های مختلف ذخیره سازی میگوی پا سفید غربی (Litopenaeus vannamei) در طی 1401-1397 بترتیب در تراکم های ( 300، 360، 100، 150 و 230 هزار قطعه در هکتار) در سه مزرعه از مزارع پرورش میگوی شرکت کاسپین کیان پاد واقع در سایت پرورش میگوی گمیشان استان گلستان اجرا شد. در طول دوره پرورش، پارامترهای فیزیکوشیمیایی آب بصورت روزانه ثبت گردید. تعداد 30 نمونه میگو با تور سالیک صید و هر 10 روز زیست سنجی گردید.نمونه گیری از میگوها و ناقلین احتمالی قبل از ذخیره سازی و در طول دوره پرورش جهت انجام آزمایش PCR برای تعیین حضور یا عدم حضور ویروس سندروم لکه سفید انجام شد. نتایج نشان داد که میانگین وزنی میگوها در مزارعی که درگیر ویروس لکه سفید بود نسبت به مزارعی که هنوز درگیر نشده بودند، بالاتر بود ولی معنی دار نبود (0/051 = P ). ولی درصد بقا و میزان تولید کل در مزارعی که درگیر ویروس نبودند نسبت به مزارع درگیر ویروس بطور معنی دار بالاتر بود (0/05>P). همچنین در مزارعی که تراکم بالا داشتند احتمال همه گیری ویروس بالاتر بود. بنظر می رسد به منظور پیشگیری از بروز بیماری لکه سفید در سایت پرورش میگوی گمیشان، حداکثر تراکم 150 هزار در هکتار پیشنهاد می شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The evaluation of the effect of density management in Whispovirus White Spot Syndrome Disease outbreak in farmed Vannamei Shrimp (Litopenaeus vannamei Boone,1931) in Gomishan shrimp farm Site, Golestan province.

نویسندگان [English]

  • Mehdi Mohajer Esterabadi 1
  • Seyed Abbas Hosseini 2
  • Abdolmajid Hajimoradloo 3
  • Rasoul Ghorbani 2
1 Corresponding Author, Ph.D. Graduate of Aquatics Production and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2 Professor, Dept. of Aquatics Production and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
3 Professor, Dept. of Aquaculture, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
چکیده [English]

White Spot Disease is the main health problem of shrimp farms in Iran, which has caused severe losses in shrimp farms. This research aims to evaluate the epidemic of white spot disease with different stocking densities of western white leg shrimp (Litopenaeus vannamei) during 2018-2022 respectively in densities of (300, 360, 100, 150 and 230 thousand pieces per hectare) in Three farms were implemented in the shrimp farms of the Caspian Kian Pad Company located in the Gomishan shrimp farming site of Golestan province. During the breeding period, water physicochemical parameters were recorded daily. A number of 30 shrimp samples were caught with salic net and shrimps of biometry were measured every 10 days. Sampling of shrimps and possible carriers was done before storage and during the breeding period to perform PCR test to determine the presence or absence of white spot syndrome virus. The results showed that the average weight of shrimps in the farms that were affected by the white spot virus was higher than the farms that were not yet affected, but it was not significant (P = 0.051). But the percentage of survival and the amount of total production in farms that were not affected by the virus were significantly higher than those affected by the virus (P<0.05). Also, in farms with high density the probability of virus epidemic was higher. It seems that in order to prevent the occurrence of white spot disease in Gomishan shrimp breeding site, the maximum density of 150 thousand per hectare is suggested.

کلیدواژه‌ها [English]

  • White Spot
  • Vannamei
  • Density

مراجع

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مجله بهره برداری و پرورش آبزیان
دوره 14، شماره 3
مهر 1404
صفحه 211-232

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