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بررسی تأثیر دما، شوری و عمق بر میزان CPUE میگوی سفید سرتیز (Metapenaeus affinis) و میگوی ببری سبز ( Penaeus semisulcatus) در سواحل استان خوزستان با استفاده از رگرسیون و RDA | ||
شیلات | ||
دوره 76، شماره 1، فروردین 1402، صفحه 55-69 اصل مقاله (1.36 M) | ||
شناسه دیجیتال (DOI): 10.22059/jfisheries.2023.91490 | ||
نویسندگان | ||
سعید کیاالوندی1؛ سید یوسف پیغمبری* 2؛ پرویز زارع3؛ رضا عباسپور نادری4 | ||
1دانشجوی دکتری گروه تولید و بهره برداری، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
2دانشیار گروه تولید و بهره برداری، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
3استادیار گروه تولید و بهره برداری، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
4رییس دفتر امور صید و صیادی، سازمان شیلات ایران، تهران، ایران | ||
چکیده | ||
نظر به اینکه اطلاعات اندکی در خصوص روابط بین متغیرهای غیرزیستی و زیستی ذخایر میگوی خلیج فارس وجود دارد، در این مطالعه، تأثیر برخی عوامل محیطی شامل دما، شوری و عمق بر میزان صید به ازای واحد تلاش صیادی (CPUE) میگوی سفید سرتیز (Metapenaeus affinis) و ببری سبز (Penaeus semisulcatus) در سواحل استان خوزستان بررسی شد. بدینمنظور، رگرسیون و رجبندی RDA برای ارزیابی اثر متغیرهای زیستمحیطی از قبیل عمق، دما و شوری بر CPUE مورد استفاده قرار گرفت. بیشینة CPUE برای میگوی سفید سرتیز در منطقة لیفه-بوسیف برابر 18/75کیلوگرم بر ساعت، در عمق 5 متری با دمای 28/5 درجه سانتیگراد و شوری 40 قسمت در هزار، در مورد میگوی ببری سبز در منطقة بحرکان به میزان 2/03 کیلوگرم در ساعت، در عمق 22 متر با دمای 32 درجه سانتیگراد و شوری40 قسمت در هزار ثبت شد. یافتههای حاصل از رجبندی نشان داد که نوسانات CPUE، با متغیرهای زیستمحیطی ارتباط معنیداری داشت. بهطوری که این رابطه برای میگوی ببری سبز از نوع مستقیم و در مورد میگوی سفید سرتیز معکوس بوده است و عمق آب در صید هر دو گونه میگو بهعنوان شاخصترین عامل مطرح است. انتخاب متغیرهای پیشرو نیز تأیید کنندة این نتایج بوده است. افزون بر اینکه، متغیر دما بهعنوان عامل تأثیرگذار بعدی شناخته شد و متغیر شوری اثر معنی داری بر CPUE گونه های میگو نداشت. مدل های رگرسیونی تنها تأثیر پارامتر عمق را بر CPUE میگوی ببری سبز معنی دار نشان دادند و صید میگوی سفید سرتیز فاقد هرگونه اثرپذیری آماری از متغیرهای محیطی بوده است. | ||
کلیدواژهها | ||
خلیج فارس؛ رجبندی RDA؛ صید به ازای واحد تلاش (CPUE)؛ میگوی ببری سبز (Penaeus semisulcatus)؛ میگوی سفید سرتیز (Metapenaeus affinis) | ||
عنوان مقاله [English] | ||
The effect of temperature, salinity, and depth on CPUE of Metapenaeus affinis and Penaeus semisulcatus in the coastal regions of Khuzestan Province using regression and RDA | ||
نویسندگان [English] | ||
Saeed Kiaalvandi1؛ Seyed yousef Paighambari2؛ Parviz Zare3؛ Reza Abbaspour Naderi4 | ||
1Ph.D Candidate, Department of Fishing and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
2Associate Professor, Department of Fishing and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
3Assistant Professor, Department of Fishing and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
4Head of the Fishing Affairs Office, Iran Fisheries Organization, Tehran, Iran | ||
چکیده [English] | ||
There is limited information about the relationship between abiotic and biotic variables of the shrimp/prawn stocks in the Persian Gulf. Consequently, the effect of some environmental factors, including temperature, salinity, and depth, on the abundance of two commercial species, Jinga shrimp (Metapenaeus affinis) and green tiger prawn (Penaeus semisulcatus), on the coasts of Khuzestan Province were assessed in the present study. For this purpose, regression, and RDA, as an ordination method, were employed to investigate the impacts of the depth, temperature, and salinity on the capture per unit effort (CPUE). The maximum CPUE for M. affinis in the western region (Life’h- Buseyf) was 18.75kg/h at a depth of 5m, 28.5°C and 40ppt salinity. It was obtained the 2.03kg P. semisulcatus per hour from the eastern region (Bahrkan) at 22m, 32°C, and 40ppt. The results of RDA revealed that the changes in CPUE have a statistical relationship with environmental variables. So that this relationship is direct for Penaeus semisulcatus and inverse for Metapenaeus affinis, and the sea depth was the most significant factor in fishing both shrimp/prawn species. The selection of the leading variables has also confirmed these results. Additionally, the temperature was recognized as the subsequent influencing factor, and the salinity variable had no significant effect on the CPUE of species. Regression models showed only a significant impact of depth on the CPUE of Penaeus semisulcatus, and the capture of Metapenaeus affinis lacked any statistical effectiveness of environmental variables. | ||
کلیدواژهها [English] | ||
Persian Gulf, RDA orientation, Catch per unit effort (CPUE), Penaeus semisulcatus, Metapenaeus affinis | ||
مراجع | ||
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