Ichthyodiversity of a small coastal river in Bangladesh

Abstract

Small rivers are often ignored in terms of conservation actions and biodiversity management in Bangladesh. Despite having significant ecological and economic importance of these rivers, there is limited study done so far. To partially fulfill this gap, this study aimed to assess the fish and shellfish biodiversity of a small coastal river named Tiakhali from southern Bangladesh. A total of 26 finfish and 7 shellfish species were identified where 50% of finfish and all of the shellfish species were from the order Perciformes and Decapoda, respectively. Results showed that 76.9% of finfish and all of the shellfish species were categorized into the least concern category based on IUCN Red List. Estimated Shannon’s, Margalef’s, Buzas & Gibson’s and Simpson’s indices were 1.189, 2.649, 0.435 and 0.435 for fish and 1.662, 0.758, 0.224 and 0.224 for shellfish, respectively. This study showed that Tiakhali river’s fish biodiversity was comparatively smaller than big rivers. The findings of this study might serve as a baseline for future works and will help policymakers to pay attention to conserve such small rivers and their biodiversity in future. Dhaka Univ. J. Biol. Sci. 32(1): 1- 10, 2023 (January)

Implementation of Ecological Distribution of Venomous Snakes for Clinical Management of Snakebite in Bangladesh

“…Terrestrial front-fanged venomous snakes: A total of 17 species of front-fanged venomous snakes were enlisted from Bangladesh, among them 10 were proteroglyphous (fixed front-fanged) kraits and cobras, and seven solenoglyphous (hinged front-fanged) vipers (Figure 2; Table 2). 29 Wildlife Article Montaquim et al 1980 30 Snake diversity and distribution Article Khan 1982 31 Wildlife Book Sarker and Sarker 1985 32 Reptiles Article Khan 1987 15 Wildlife Book Sarker and Sarker 1988 33 Wildlife Book Khan 1992 16 Snake diversity and distribution Book Sarker and Hossain 1997 34 Wildlife Article Ahsan 1998 35 Herpetofaunal distribution Conference proceeding IUCN 2000 36 Wildlife Book Asmat and Hannan 2007 37 Wildlife Book Khan 2008 38 Wildlife Book Mahony and Reza 2008 39 Herpetofaunal distribution Article Kabir et al 2009 40 Wildlife Book Mahony et al 2009 41 Herpetofaunal collection Article Khan 2010 17 Wildlife Book Faiz et al 2010 25 Snakebite 50 Snake habitat Karim and Ahsan 2014 51 Snake diversity and distribution Article Khan 2015 12 Wildlife Book IUCN Bangladesh 2015 10 Herpetofaunal distribution Book Ahsan et al 2015 18 Snake diversity and distribution Article Alam et al 2016 52 Snakebite Article Ahsan and Rahman 2017 53 Snake distribution Article Sarker et al 2017 28 Snake distribution Article Khan 2018 11 Wildlife Book Ahsan and Saeed 2018 54 Snake distribution Book Haidar et al 2020 55 Snake taxonomy and distribution Article Hakim et al 2020 19 Herpetofaunl taxonomy and distribution Article Shome et al 2020 56 Snake taxonomy and distribution Article Romon et al 2021 57 Snake taxonomy and distribution Article Chowdhury et al 2021 …”