Nima, A., Hossain, M., Rahman, M., Mawa, Z., Hasan, M., Islam, M., Rahman, M., Tanjin, S., Sabbir, W., Bashar, M., Mahmud, Y. (2020). Temporal variations of length, weight, and condition of Hilsa shad, Tenualosa ilisha (Hamilton, 1822) in the Meghna River, Southeastern Bangladesh. Egyptian Journal of Aquatic Biology and Fisheries, 24(2), 481-494. doi: 10.21608/ejabf.2020.88776
Akhery Nima; Md. Yeamin Hossain; Md. Ashekur Rahman; Zannatul Mawa; Md. Rabiul Hasan; Md. Akhtarul Islam; Md. Ataur Rahman; Sumaya Tanjin; Wasim Sabbir; Md. Abul Bashar; Yahia Mahmud. "Temporal variations of length, weight, and condition of Hilsa shad, Tenualosa ilisha (Hamilton, 1822) in the Meghna River, Southeastern Bangladesh". Egyptian Journal of Aquatic Biology and Fisheries, 24, 2, 2020, 481-494. doi: 10.21608/ejabf.2020.88776
Nima, A., Hossain, M., Rahman, M., Mawa, Z., Hasan, M., Islam, M., Rahman, M., Tanjin, S., Sabbir, W., Bashar, M., Mahmud, Y. (2020). 'Temporal variations of length, weight, and condition of Hilsa shad, Tenualosa ilisha (Hamilton, 1822) in the Meghna River, Southeastern Bangladesh', Egyptian Journal of Aquatic Biology and Fisheries, 24(2), pp. 481-494. doi: 10.21608/ejabf.2020.88776
Nima, A., Hossain, M., Rahman, M., Mawa, Z., Hasan, M., Islam, M., Rahman, M., Tanjin, S., Sabbir, W., Bashar, M., Mahmud, Y. Temporal variations of length, weight, and condition of Hilsa shad, Tenualosa ilisha (Hamilton, 1822) in the Meghna River, Southeastern Bangladesh. Egyptian Journal of Aquatic Biology and Fisheries, 2020; 24(2): 481-494. doi: 10.21608/ejabf.2020.88776
Temporal variations of length, weight, and condition of Hilsa shad, Tenualosa ilisha (Hamilton, 1822) in the Meghna River, Southeastern Bangladesh
The current study was on temporal variations of length, weight, and condition of Tenualosa ilisha (Hamilton, 1822) from the Meghna River, Southeastern Bangladesh for the period of July 2018 to June 2019. A total of 1433 individuals were collected from the Meghna River (Chandpur and Laxmipur region, SE Bangladesh). Bodyweight (BW) and total length (TL) were measured with 0.01 g and 0.01 cm accuracy for each specimen. The relative condition factor (KR) was calculated by the equation of Le Cren (1951): KR = W/(a×Lb) where W is the body weight (g) and L is the total length (cm) and a & b is the length-weight relationship parameters estimated with linear regression analyses. The value of KR ~ 1 indicates good health, >1 indicates over bodyweight with compare to length, whereas <1 indicates a relatively poor condition of fish. The TL ranged from 15.3-57.8 cm while the BW was 37.17–2250 g. The overall KR for T. ilisha was 0.65-1.66 in the Meghna River. The maximum KR was found in July while the minimum was in January. The KRwas strongly correlated with BW in the Meghna River. These findings will help to improve the sustainable management policy of hilsa fishery in the Meghna river ecosystem and other adjacent water bodies.
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