Iranian Journal of Fisheries Sciences

other Population growth and reproductive potential of five important fishes from the freshwater bodies of Bangladesh Biology & physiology Biology & physiology پژوهشي Orginal research papers 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>3) 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. Beel, Fecundity, Sex-ratio, Length-weight relationship, Small indigenous fish 657 674 http://jifro.ir/browse.php?a_code=A-10-1296-2&slc_lang=other&sid=1 M.T. Alam 100319475328460029595 100319475328460029595 No Department of Aquaculture, Sylhet Agricultural University, Sylhet, Bangladesh. Department of Aquaculture, Sylhet Agricultural University, Sylhet, Bangladesh. M.A. Hussain 100319475328460029596 100319475328460029596 No Departemt of Fisheries, Rajshahi University, Bangladesh. Departemt of Fisheries, Rajshahi University, Bangladesh. S. Sultana 100319475328460029597 100319475328460029597 No Department of Zoology, Rajshahi University, Bangladesh. Department of Zoology, Rajshahi University, Bangladesh. M.T. Hasan 100319475328460029598 100319475328460029598 No Department of Aquaculture, Sylhet Agricultural University, Sylhet, Bangladesh. Department of Aquaculture, Sylhet Agricultural University, Sylhet, Bangladesh. A.G. Mazlan 100319475328460029599 100319475328460029599 No Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor, D. E., Malaysia. Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor, D. E., Malaysia. K.D. Simon sabujsau@gmail.com 100319475328460029600 100319475328460029600 Yes Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor, D. E., Malaysia. Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor, D. E., Malaysia. S.K. Mazumder 100319475328460029601 100319475328460029601 No Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor, D. E., Malaysia. Marine Ecosystem Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, UKM, Bangi, Selangor, D. E., Malaysia.