Population growth and reproductive potential of five important fishes from the freshwater bodies of Bangladesh

  • سال انتشار: 1397
  • محل انتشار: مجله علوم شیلات ایران، دوره: 17، شماره: 4
  • کد COI اختصاصی: JR_JIFRO-17-4_003
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 86
دانلود فایل این مقاله

نویسندگان

M.T. Alam

Department of Aquaculture, Sylhet Agricultural University, Sylhet, Bangladesh.

M.A. Hussain

Departemt of Fisheries, Rajshahi University, Bangladesh.

S. Sultana

Department of Zoology, Rajshahi University, Bangladesh.

M.T. Hasan

Department of Aquaculture, Sylhet Agricultural University, Sylhet, Bangladesh.

A.G. Mazlan

Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, ۴۳۶۰۰, UKM, Bangi, Selangor, D. E., Malaysia.

K.D. Simon

Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, ۴۳۶۰۰, UKM, Bangi, Selangor, D. E., Malaysia.

S.K. Mazumder

Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, ۴۳۶۰۰, UKM, Bangi, Selangor, D. E., Malaysia.

چکیده

Population growth (length-weight relationship), and reproductive potential (e.g. fecundity, and sex-ratio) of five important fish species (‘mola’: Amblypharyngodon mola, ‘puti’: Puntius sophore, ‘tengra’: Mystus vittatus, ‘shing’: Heteropneustes fossilis and ‘taki’: Channa punctatus) collected from two important fresh water bodies (namely Hilna beel and Beel Kumari beel) Rajshahi, Bangladesh, were studied. Population growth pattern by length-weight relationship (W=aLb) for the species differed, and exhibited positive allometric growth (P. sophore in Hilna beel), isometric growth (A. mola and C. punctatus in Hilna beel) and negative allometric growth (M. vittatus & H. fossilis in Hilna beel and A. mola, P. sophore, M. vittatus, C. punctatus and H. fossilis in Beel Kumari beel). The results denoted that fecundity of mature females followed a non-linear relationship (F=aLb) with total length and exhibited positive allometric growth (b> ۳) with some exception (A. mola in Hilna beel and M. vittatus in Beel Kumari beel). Fecundity of mature females also increased with total body weight and ovary weight following a linear relationship (F=a+bW). Differences in values of sex-ratios with seasons for all species in this study may have resulted from different environmental factors as well as breeding seasons. The findings of this study would be useful in imposing adequate regulations for the conservation of these fascinating fishes in the fresh water bodies of Bangladesh.

کلیدواژه ها

Beel, Fecundity, Sex-ratio, Length-weight relationship, Small indigenous fish

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.