Affiliation:
1. Department of Aquaculture, Bangladesh Agricultural University, Mymensingh, Bangladesh
2. Department of Biochemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
3. Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh
Abstract
The current study examined the length-weight relationships (LWRs), length-length relationships (LLRs), and condition factor (K) of four threatened riverine catfish species (Pangasius pangasius, Rita rita, Sperata aor, and Bagarius bagarius) sampled from the Meghna River Estuary (MRE), Bangladesh. A total of 578 individuals were collected from contracted fishermen between January and October 2022. The length and weight of each species exhibited a highly positive correlation. The regression coefficient was 2.24 for P. pangasius, 2.90 for R. rita, 2.91 for S. aor, and 3.25 for B. bagarius. Furthermore, all species demonstrated a highly positive correlation between total length and standard length (r > 0.90). The calculated condition factor (K) values were 0.87 for P. pangasius, 1.18 for R. rita, 0.66 for S. aor, and 0.99 for B. bagarius indicating variations among the species. This study provides the first comprehensive documentation of all four major catfish species found in the MRE.
Funder
Noakhali Science and Technology University
Reference25 articles.
1. Fish 292 biodiversity and their present conservation status in the Meghna River of 293 Bangladesh;M. M. H. Pramanik;International Journal of Fisheries and Aquatic Studies,2017