بررسی پراکنش مکانی میگوی سفید Metapenaeus affinis (H. Milne-Edwards, 1837) در سواحل استان بوشهر با استفاده از ترال کف روب

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 دانشجوی ارشد

2 عضو هیات علمی گروه تولید و بهره برداری دانشگاه علوم کشاورزی و منابع طبیعی گرگان

3 دانشگاه گرگان

4 کارشناس ارشد

چکیده

این تحقیق با هدف بررسی پراکنش مکانی میگوی سفید سرتیز (Metapenaeus affinis) در سواحل استان بوشهر در فصل صید میگو (مرداد و شهریور 1392) انجام گردید عملیات نمونه‌برداری در سه طبقه عمقی کمتر از 10 متر، 20-10 متر و 30-20 متر انجام گرفت. در بررسی اثر عمق بر میزان صید به ازای واحد تلاش صیادی اختلاف معنی‌داری مشاهده شد (001/0P<) و بیشترین میزان صید در عمق 20-10 متر صورت گرفت. در بررسی فراوانی نسبی دو جنس نر و ماده مشاهده شد که بین پراکنش طولی میگوهای نر و ماده اختلاف معنی داری وجود دارد (05/0>p) و بزگترین میگوی صید شده میگوی ماده با اندازه 15 میلی‌متر بود. در بررسی نسبت جنسی، میگوهای ماده بطور معنی‌دار از فراوانی بالاتری برخوردار بودند (05/0p<) و نسبت نر به ماده 86/0 به 1 محاسبه گردید. این نسبت در عمق زیر 10 متر اختلاف معنی‌دار نداشته درحالیکه در عمق بیش از 10 متر، اختلاف معنی‌دار بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Study of local distribution of Jinga shrimp Metapenaeus affinis (H. Milne-Edwards, 1837) in the coastal waters of Bushehr Province by using bottom trawl

نویسنده [English]

  • Saeid Gorgin 2
1
2
3
4
چکیده [English]

The aim of this study was to assess local distribution of Jinga shrimp (Metapenaeus affinis) in the coastal waters of Bushehr Province during shrimp catching season (August and September 2013). Sampling done in three depth classes including less than 10 m, 10-20 m and 20-30 m. In study of effect of depth on catch per unit effort, significant difference was observed (P<0.001) and the most catch done on 10-20 m. In study of length frequency of male and female, the result shows there is significant difference between length frequency of males and females (P<0.05) and the biggest caught was a female shrimp with 15 mm length. Sex ratio shows female shrimps had more frequency than male shrimps (P<0.05) and ratio male to female was 0.86 to 1. This ratio was not significant difference in less than 10 m depth however it was significant difference in more depth.

کلیدواژه‌ها [English]

  • local distribution
  • Metapenaeus affinis
  • Trawl
  • Bushehr Province
  • Persian Gulf
1. Bishop, J.M., and Khan, M.H. 1991. Depth as a factor in abundance and size of juvenile
Penaeidae shrimps in the absence of estuaries and marshes. Marine Biology, 109: 103-114.
2. Boerema, L.K. 1969. The shrimp resources in the Gulf between Iran and the Arabian
Peninsula. FAO Fish, Circ 310, 29.
3. Carpenter, K.E., Krupp, F., Jones, D.A., and Zajonz, U. 1997. Living marine resources of
Kuwait, Eastern Saudi Arabia, Bahrain, Qatar and UAE. FAO Species Identification Field
guide for Fishery Purposes, Rome, Italy: FAO Publication. 1-293.
4. Daliri, M. 2012. Study of distribution and CPUE of tiger shrimp (Penaeus semisulcatus) and
effect of water physiochemical on distribution of it in Bushehr Water. M.Sc. Thesis in
Gorgan University of Agriculture Sciences and Natural Resources. 57p.
5. Fischer, W., and Bianchi, G. 1984. FAO species identification sheets for fishery purposes:
western Indian Ocean. Fishing area 51. Prepared and printed with the support of the Danida
International Development Agency. Pp: 447-473.
6. Gerami, M.H. 2011. Population dynamic and determined of Metapenaeus affinis biomass in
Hormozgan Province. M.Sc. Thesis in Gorgan University of Agriculture Sciences and
Natural Resources. 96p.
7. Gulland, J.A. 1983. Fish stock assessment a manual of basic methods. FAO/Wiley Series on
Food and Agriculture. Vol 1. Wiley-Interscience. Chichester. UK. 223p.
8. Hashemi, S.A., Eskandary, G., and Sedaghat, S. 2012. Length-Weight and Length-Length
Relationships of Metapenaeus affinis (H. Milne-Edwards, 1837) in Northwest of Persian
Gulf (Khuzestan Coastal Waters, Iran). American-Eurasian J. Agric. and Environ. Sci.
12(10): 1339-1342.
9. Holthuis, L.B. 1980. FAO species catalogue. Vol. 1: Shrimp and prawns of the world. An
annotated catalogue of species of interest to fisheries, FAO Fish. Synop, 271p.
10.Iranian Fisheries Organization, 2014. Statistical Yearbook of Iranian Fisheries Organization.
33p.
11.Macia, A. 2004. Juvenile Penaeidae shrimp density, spatial distribution and size composition
in four adjacent habits within a mangrove– fringed bay on Incaha Island, Mozambique.
Western Indian Ocean Journal of Marine Science, 3(2): 163-178.
12.Moradi, M. 2009. Determined of Biomass and fishing period of semisulcatus shrimp in
Bushehr Waters from 2004 until 2006. Final research project. 57p.
13.Niamimandi, N., and Tavakoli, R.H. 1991. Study of Biological Characters of Indian shrimps
in Mosa Lagoon. Final research project. 25p.