Title of article :
Some biological aspects of Asian stinging catfish, Heteropneustes fossilis (Bloch, 1794) (Teleostei: Siluriformes) in a wetland ecosystem
Author/Authors :
ISLAM ، Md. Akhtarul Department of Fisheries - Faculty of Agriculture - University of Rajshahi , HOSSAIN ، Md. Yeamin Department of Fisheries - Faculty of Agriculture - University of Rajshahi , RAHMAN ، Md. Ataur Department of Fisheries - Faculty of Agriculture - University of Rajshahi , RAHMAN ، Obaidur Department of Fisheries - Faculty of Agriculture - University of Rajshahi , SARMIN ، Most. Shakila Department of Fisheries - Faculty of Agriculture - University of Rajshahi , KHATUN ، Dalia Department of Fisheries - Faculty of Agriculture - University of Rajshahi , HASAN ، Md. Rabiul Department of Fisheries - Faculty of Agriculture - University of Rajshahi , NIMA ، Akhery Department of Fisheries - Faculty of Agriculture - University of Rajshahi , MAWA ، Zannatul Department of Fisheries - Faculty of Agriculture - University of Rajshahi , RAHMAN ، Md. Ashekur Department of Fisheries - Faculty of Agriculture - University of Rajshahi , TANJIN ، Sumaya Department of Fisheries - Faculty of Agriculture - University of Rajshahi , PARVIN ، Most. Farida Institute of Environmental Sciences - University of Rajshahi
Abstract :
The Stinging catfish, Heteropneustes fossilis (Bloch, 1974) is a commercially important fish species in Asia. This study describes some biological aspects of H. fossilis using a total of 250 individuals which were captured during July 2017 to June 2018 by various types of traditional fishing gears and measured biometric data for each individual The recorded results showed that the TL was varied from 10.30 to 20.50cm and BW was ranged from 4.42 to 50.91g. All LWRs were significant (P 0.001), with r^2 values ≥0.952. The calculated allometric coefficient (b) showed positive allometric growth in ombined sexes (b 3). The LLR was significant (P 0.001) with r^2 value 0.988. The a3.0, Lm, and MW were 0.0063, 12.09cm TL and 1.09y^-1 for H. fossilis in the Gajner Beel, respectively. These findings would be very effective for further stock assessment and management of this fishery in the Gajner Beel wetland and adjoining ecosystems.
Keywords :
Length , weight relationship , Heteropneustes fossilis , Size at first sexual maturity , Natural mortality
Journal title :
Iranian Journal of Ichthyology
Journal title :
Iranian Journal of Ichthyology
